In Figure 4.7, the net external force on the 24-kg mower is stated to be 51 N. If the force of friction opposing the motion is 24 N, what force F (in newtons) is the person exerting on the mower? Suppose the mower is moving at 1.5 m/s when the force F is removed. How far will the mower go before stopping?
The force (F) exerted on the mower of mass 24 kg is 2.125 N and The distance the mower will travel when before it stopping when F is removed is 0.53m.
What is force?Force can be defined as the product of mass and acceleration.
To calculate the force the person is exerting on the mower, we use the formula below.
Formula:
F = F'+f......... Equation 1Where:
F = Net external force on the mowerf = Force of frictionFrom the question,
Given:
F' = 51 Nf = 24 NSubstitute these values into equation 1
F = 51+24F = 75 NAlso, To calculate the distance the mower will move before stopping, We need to first find the acceleration of the mower using the formula below.
Formula:
a = F/m................. Equation 2Where:
F = Net external force of the mowerm = Mass of the mowera = Acceleration of the mowerFrom the question,
Given:
F = 51 Nm = 24 kgSubstitute these values into equation 2
a = 51/24a = 2.125 m/s²Finally, we use the formula below to calculate the total distance the mower will travel before stopping
Formula:
s = (v²-u²)/2a......... Equation 3Where:
s = Total distancev = Final velocityu = Initial velocityFrom the question,
Given:
v = 1.5 m/su = 0 m/sSubstitute these values into equation 3
s = (1.5²-0²)/(2×2.125)s = 0.53 mHence, the force exerted on the mower is 2.125 N and the distance the mower will travel before it stops is 0.53m.
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what is the lift (in newtons) due to bernoulli's principle on a wing of area 87 m2 if the air passes over the top and bottom surfaces at speeds of 250 m/s and 170 m/s , respectively?
Bernoulli's principle produces a lift of 3770928N on a 87m²wing.
What constitutes Bernoulli's principle's foundation?According to Bernoulli's principle, areas of a fluid flow that are moving more quickly will experience less pressure than areas that are moving more slowly.
The following memorable word equation serves as a concise summary of Bernoulli's equation in its simplified form: Total pressure equals static pressure plus dynamic pressure. Regardless of the fluid speed at a given position, every point in a constantly flowing fluid has a distinct static pressure (p) and dynamic pressure (q).
Bernoulli's principle states that the following expression represents force:
F = A × d × V²₂ - V₁²/2
F = 87 × 1.29 × (250² - 170²)/2
F = 112.23 × 33600
F = 3770928N
As a result, a wing with an area of 87 m² has a lift of 3770928N.
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What single color of light illuminating a ripe banana will make it appear black?.
The single color of light illuminating a ripe banana will make it appear black will be blue light.
When lit with blue light, ripe bananas appear black. Yellow is a combination of red and green, so if blue light is flashed onto a yellow banana, the fruit will absorb the blue light, leaving nothing for the banana to reflect. The banana seems black to the eyes because there is nothing for them to reflect back to them. So, when viewed with blue light, a ripe banana appears black.
A red shirt would seem black if only blue light were shined on it because no red light would be there to reflect the blue light, which would otherwise absorb it. Ripe bananas adhere to the same standard and also white objects, which seem white because they reflect all colors.
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a small truck has a mass of 2095 kg. how much work is required to decrease the speed of the vehicle from 25.0 m/s to 15.0 m/s on a level road?
The vehicle needs to do 515872.5 Joule of labor in order to reduce its speed from 25 m/s to 12 m/s when a small truck has a mass of 2095 kg.
What exactly is speed?
the rate at which the position of an object changes in any direction. The ratio of distance traveled to the time required to travel that distance is known as speed. Speed is a scalar quantity because it has no magnitude and only a direction. The SI unit of speed is made up of the fundamental units of time and distance. The speed measurement in the metric system is measured in meters per second. Work is defined as the energy that is moved to or from an item by exerting force along a displacement. It is easiest to express as the product of force magnitude and distance traveled with a constant force acting in the same direction as the motion.
According to the International System of Units, a joule is a unit of work.
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joey is riding in an elevator which is accelerating upwards at 2.0 m/s2. The elevator weighs 300.0 kg, and Joey weighs 60.0 kg. What is the tension in the cable that pulls the elevator upwards?
The tension in the cable is 4248 N.
what is tension?The force transmitted through a rope, string, or wire when two opposing forces pull on it is known as tension. The tension force pulls energy equally on the bodies at the ends and is applied along the entire length of the wire.
Given parameters:
Weighs of the elevator, M = 300.0 kg.
weighs of Joey, m = 60.0 kg.
Upward acceleration of the elevator, a = 2.0 m/s².
And, acceleration due to gravity, g = 9.8 m/s².
So, net tension in the cable, T = (M + m)g + (M + m)a
= ( 300.0 + 60.0 ) × 9.8 N + (300.0 +60.0 )× 2.0 N
= 4248 N.
Hence, the tension in the cable that pulls the elevator upwards is 4248 N.
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The first step in the proton-proton chain produces an antielectron, or positron. What happens to the positron?.
In the first step in the proton-proton chain, the positron gets rapidly converted to energy when it meets a standard electron, leading to matter-antimatter annihilation.
The positron is an antiparticle or antimatter counterpart of the electron. It persists an electrical charge of +1e, a spin of 1/2, and a mass identical to the mass of the electron. When a positron collides with an electron, destruction occurs. If this collision is at low energies, it leads to the production of two or more photons. They're created by radioactive decay or by the pairing of two protons at high energies.
The proton-proton chain is a nuclear fusion. The proton-proton fusion is initiated only when the kinetic energy of the proton is high enough to undergo the electrostatic repulsion.
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suppose a ship flies toward you at nearly lightspeed. in the ship's reference frame, it is 10 m long (front to back). when you measure its length, what is the result?
Its length is 6.6m.
How is length contracted defined?Length contraction is a phenomena where a moving object's length is measured to be less than it actually is.
When an object is travelling faster than the viewer, but not at the speed of light, length contraction is seen. The relativity of space and time is the cause of this. The two extremes of a moving object will send out signals like light at somewhat different intervals to an observer watching the thing.
Using the relationship between length contraction,
l = l₀[tex]\sqrt{1-\beta^{2} }[/tex]
β = v/c
l₀ = 10m
v = 0.75c
v/c = 0.75
In place of, we have
l = 10×[tex]\sqrt{1-0.75^{2} }[/tex]
l = 10× 0.66
l = 6.6m.
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an astronaut weighs 99 n on the moon, where the acceleration of gravity is 1.62 m/s2. how much does she weigh on earth? group of answer choices 600 n 440 n 61 n 16 n 99 n
On the moon, where gravity accelerates at 1.62 m/s2, an astronaut weighs 99 n, but their weight on Earth is 600 Newton(option a is correct).
Work done = Mass * Acceleration due to gravity
99=m*1.62
m=61.11kg
W=mg 61.11*9.8=598.89N = 600N= Weight on Earth
The acceleration of an item refers to the pace at which its velocity with respect to time varies. The number of accelerations in a vector (in that they have magnitude and direction). An object's acceleration in respect to a net force is determined by the direction of that force. Newton's Second Law states that the combined effects of two elements determine how much an item accelerates:
The amount of this net resultant force is exactly proportional to the size of the net balance of all external forces operating on that item. Depending on the materials used in construction, mass and mass are inversely connected.
Acceleration is measured in meters per second squared (m/s2).
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A polar bear walks 40 meters North, then 20 meters East , then 40 meters south. The bear completes his trip in 10 seconds. what is the bear's total distance traveled ?
The total distance travelled is 100 m.
What is the total distance traveled ?We know that distance is a scalar quantity. Let us note that scalar quantities are the quantities that do not have a direction rather they do have magnitude. This is where the vector is different from the scalar quantity in physics.
Looking at this description, we are told that the polar bear walks 40 meters North, then 20 meters East , then 40 meters south. We can see that the total distance can be obtained by the addition of all the distances travelled.
Total distance travelled is; 40 + 20 + 40 = 100 m
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Which statement is true regarding a distance vs. time graph? (1 point)
O The graph should show distance on the vertical axis.
O The graph can include only straight line segments.
O The graph must have a horizontal segment.
O The graph needs to start at the origin.
The statement that is true regarding a distance vs. time graph is option A: The graph should show distance on the vertical axis.
Where is the plot of distance?How far an object has come in a certain amount of time is displayed on a distance-time graph. Time is represented on the X-axis and Distance is plotted on the Y-axis (left) (bottom).
On a distance-time graph, an object's motion is indicated by a sloping line. The slope or gradient of the line in a distance-time graph is equal to the object's speed. The object is travelling more quickly the steeper the line is (and the bigger the gradient).
Note that the distance-time graph shows the relationship between distance and time by plotting distance on the y-axis and time on the x-axis.
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Answer:
(Question) Which quantity is scalar?
(Answer) Energy
(Question) Which option describes a vector quantity?
(Answer) It has magnitude, units, and direction.
(Question) A sailboat ends up 7 miles to the west of a pier. Which statement is true about this situation?
(Answer) It describes displacement, which is a vector quantity.
(Question) Which statement is true regarding a distance vs. time graph?
(Answer) The graph should show distance on the vertical axis.
(Question) On a distance vs. time graph for an object, a line segment that is sloping upward indicates
(Answer) motion in the positive direction.
Explanation:
just finished the quick check UwU
in a solar system far, far away the sun's intensity is 200 w/m2 for an inner planet located a distance r away. what is the sun's intensity for an outer planet located at a distance 6 r from the sun?
The sun's intensity for an outer planet located at a distance 6r from the sun is 5.55 W/m². The result is obtained by using the inverse square law formula.
What is the Inverse Square Law formula?The Inverse Square Law formula describes the intensity of light is inversely proportional to the square of the distance. It can be expressed as
[tex]\frac{I_{1} }{I_{2} } = \frac{d_{2}^{2} }{d_{1}^{2}}[/tex]
Where
I₁ = Intensity at distance 1 (W/m²)I₂ = Intensity at distance 2 (W/m²)d₁ = distance 1 from a light source (m)d₂ = distance 2 from a light source (m)Given the case the sun's intensity is 200 W/m² for an inner planet at the distance r. If an outer planet is at a distance 6r, what is the sun's intensity?
By using the inverse square law formula, the sun's intensity for an outer planet is
[tex]\frac{I_{1} }{I_{2} } = \frac{d_{2}^{2} }{d_{1}^{2}}[/tex]
[tex]\frac{200 }{I_{2} } = \frac{(6r)^{2} }{r^{2}}[/tex]
[tex]\frac{200 }{I_{2} } = \frac{36r^{2} }{r^{2}}[/tex]
[tex]I_{2} = \frac{200} {36}[/tex]
I₂ = 5.55 W/m²
Hence, the sun's intensity for a planet at a distance 6r from the sun is 5.55 W/m².
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a 2.0-kg object is moving without friction along the x-axis. the potential energy curve as a function of position is shown in the figure, and the system is conservative. if the speed of the object at the origin is 4.0 m/s, what will be its speed at 7.0 m along the x-axis?
The speed at 7.0 m along the x-axis is 4.24 m/s.
Which speed is it?the rate at which the location of an object changes in any direction. The ratio of distance traveled to the time required to travel that distance is known as speed. Considering that speed only has a direction and no magnitude.
given,
speed of the object at origin = 4 m/s
potential energy at origin = 10 J
mass of the object = 2 kg
potential energy at 7 m = 8 J
since the system is conservative so it'll follow the conservation of energy
that is,
initial energy = final energy
kinetic energy = 0.5 ×m× v²
initial potential energy + initial kinetic energy = final potential energy + final kinetic
energy
10+ 0.5 × 2 × 4² = 8 + 0.5 × 2 × v²
v = 4.24 m/s
speed at 7m = 4.24 m/s.
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1. If you wanted to make a piece of silk fabric become negatively charged, what might you rub it with? Explain your reason.
2. If you wanted to make a piece of silk fabric become positively charged, what might you rub it with? Explain your reason.
The silk can get a negative charge if it is rubbed against iron rod and it can get a positive charge if it is rubbed against hair.
How to make charges?We know that a charge is made when there is either an excess or a deficit of electrons. When there is an excess of the positive charge on an object, we can say that the object ha become positively charged. If there is an excess of negative charges, we can say that the material is negatively charged. We now want to determine how we could make silk to become positively or negatively charged.
If we want the silk to have a negative charge then we have to rub the silk with a glass rod. If the silk is rubbed with a glass rod, what would happen is that electrons would be transferred from the rod to the silk leaving the silk with a negative charge.
If you want the silk to have a positive charge, you could rub it against hair. In that way, the hair would get an negative charge while excess electrons are transferred to the silk making it to have a positive charge.
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When using a schematic for
troubleshooting, which of these is the best
property to follow?
A. the service
B. the meter
C. the power
When using a schematic for troubleshooting, the best property to follow is the meter and is denoted as option B.
What is Meter?This is referred to as any type of device which is built to accurately detect and display an electrical quantity in a form which is readable by a human being.
Examples of meters which are used by people include voltmeter, ohmeter etc which are used to read voltage and current respectively. It is used to troubleshoot when schematics are used as certain parameters are detected and analyzed so as to detect the issue and solve it appropriately.
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a father uses a rope to pull a child on a sled at a constant speed. of the ones listed which forces are present?
When father uses a rope to pull a child on a sled at a constant speed then the sum of all the forces acting on sled is zero.
What are the forces present while pulling a child on sled using rope?Forces such as normal force, force of gravity, force of friction, tension and air resistance are present.
But as the father pulls the sled with constant speed then the the sum of all the forces acting on the sled becomes zero.
As there is no movement in upward or downward directions then the weight of the child and the sled is equal to the normal force acted upon the sled by ground.
The force which is applied by the father on the rope is equal to the tension in the rope.
Friction and air resistance act opposite to the direction of motion of the sled and as sled moves at constant speed, tension in the rope must be equal to the sum of friction and air resistance forces.
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1.what did you observe about the motion of objects during and after collisions? 2. based on the velocity change of each object, what did you infer about the direction of forces during a collision?
1.When two objects collide, both objects experience forces that are equal in magnitude and opposite in direction. Such forces often cause one object to accelerate (gain speed) and another object to slow down (lose speed).
2. The effect of the forces experienced on the objects during the collision is different if the masses of the objects are different. The same force causes different changes in velocity for objects with different masses. An object with a smaller mass has a greater change in velocity when the same force is applied.
What is collision?A collision means that two objects collide with each other for a very short time. In other words, a collision is the interaction of two masses in a very short period of time, where the momentum and energy of the colliding masses change.
The law of conservation of momentum usually applies to collisions between two masses, but some collisions may involve kinetic energy. Depending on the conservation of energy there can be two types of conservation:
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1. why does each light beam pass through the flat surface without deviation, but get refracted (i.e. deflected) at the curved surface on the far side?
Light beam pass through the flat surface without deviation, but get refracted (i.e., deflected) at the curved surface on the far side as it may be at 90° to the curved surface.
What is Refraction of light?Refraction is the term for the bending of light as it passes through transparent materials (it also occurs with sound, water, and other waves).We are able to create lenses, magnifying glasses, prisms, and rainbows because of this bending caused by refraction. Even our eyes rely on this light bending. We wouldn't be able to concentrate light onto our retina without refraction.When light enters a material with a differing refractive index at an angle, it refracts (optical density).A shift in speed is what led to this direction change. For instance, light slows down as it passes through water from air and continues to move at a new angle or direction.Two factors determine how much bending occurs:Change in speed: A substance will refract (bend) or speed up or slow down the light more if it does so.Angle of the incident ray: The amount of refraction will also be more apparent if light is entering the substance at a larger angle.On the other hand, the light will continue to slow down and remain pointed in the same direction if it enters the new substance straight on (at 90° to the surface).To learn more about Refraction of light, refer to
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a plane electromagnetic wave has an average power per unit area of 153 w/m2 . a flat, rectangular surface, 18.2 cm by 45.1 cm, is placed perpendicular to the direction of the plane wave. if the surface absorbs half the energy and reflects half, calculate the net energy absorbed in 1.22 min. answer in units of j.
Knowing the power of the units and the electromagnetic waves is necessary to calculate the net energy unit.
What is power?
Power is the work completed in a given amount of time or time spent working. The joules per second (J/s)-based SI power unit is the Watt (W). Horsepower (hp), roughly equal to 745.7 watts, is sometimes used to describe the power of machines like motor vehicles.
What are electromagnetic waves?
Magnetic and electric fields vibrate together to produce electromagnetic waves, also known as EM waves. In other words, oscillating magnetic and electric fields make up electromagnetic waves (EM).
P=I*A=t=E/t
E=I*A*T
I= 153W/M^2
A=18.2*45.1*10^-4
A=0.082082
t=1.22mins = 1.22*60^S
t= 73.2
applying the formula E=I*A*T
E= 919.2855j
Therefore, the net energy absorbed in 1.22 min is 919.285j.
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a boy pushes a wheelbarrow with a force of 36 n to the left. a frictional force of 13 n opposes the motion. the wheelbarrow and its contents have a mass of 37 kg. calculate the acceleration of the wheelbarrow:
The acceleration of the wheelbarrow is 0.621 m/s^2 .
There will be equal force applied on both side, in that case the object will be having zero motion and zero acceleration.
But in the case when there is more force applied in one direction than other side force then there will be acceleration on the object.
This acceleration is equal to the ΔF/m.
where ΔF is the difference of the forces applied on the both direction
and m is the total mass of the object.
According to the question, we have m = 37Kg
ΔF = (36-13) n = 23 n
so a = 23/37 = 0.621 m/s^2
so acceleration of the wheelbarrow is 0.621 m/s^2 .
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which factor is not usually considered by physicians when determining how much to charge for a procedure
The charge for a procedure or accepting fees that are predetermined by the plan is dependent on the patient's ability to pay.
What does a physician do?Doctors and surgeons deal with maintaining health as well as diagnosing and treating illnesses and injuries. In addition to conducting physical examinations and medical history inquiries, doctors also order, carry out, and interpret diagnostic tests. Patients frequently receive advice from them on food, cleanliness, and preventative healthcare.
Physician labor is the part of the Medicare Physician Fee Schedule that represents the overhead expenses related to a service.
Mistaken cost.practice cost.Factor of conversion.While precertification gives the provider permission to provide the medical service, preauthorization specifically establishes the dollar amount approved for the medical procedure.
The main distinction between doctors and physicians is that doctors typically specialize in a field of practice while physicians typically have a more general background.
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the 20-g centrifuge at nasa's ames research center in mountain view, california, is a horizontal, cylindrical tube 58.0 ft long and is represented in the figure below. assume an astronaut in training sits in a seat at one end, facing the axis of rotation 29.0 ft away. determine the rotation rate, in revolutions per second, required to give the astronaut a centripetal acceleration of 10.6g.
In rotations per second, the rotation rate is The angular speed in revolutions per second can then be converted to radians per second by dividing that time by 10.
Explain about the centripetal acceleration?Centripetal acceleration is a characteristic of an object's motion along a circular path. Centripetal acceleration applies to any object moving in a circle with an acceleration vector pointing in the direction of the circle's center.
An object must continuously change directions in order to maintain circular motion. Changes in direction result in changes in velocity because velocity is a vector. Centripetal acceleration is the term for the change in velocity caused by circular motion.
A net force that keeps an object moving in a circular motion is known as a centripetal force. Examples of centripetal force include the rotation of the top and the moon's orbit around the earth.
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what physical feature of mars is atypical compared with the other terrestrial planets? what physical feature of mars is atypical compared with the other terrestrial planets? its size its rotation rate its atmospheric content its density its surface composition
The answer of this is "Its surface composition"
Mars is the fourth planet from the Sun and the next planet beyond Earth. It is, on average, more than 142 million miles from the Sun.
Its surface is rocky, with canyons, volcanoes, dry lake beds and craters all over it. Red dust covers most of its surface. Mars has clouds and wind just like Earth. Sometimes the wind blows the red dust into a dust storm. Tiny dust storms can look like tornados, and large ones can be seen from Earth. Mars’ large storms sometimes cover the entire planet.
Mars has about one-third the gravity of Earth. A rock dropped on Mars would fall more slowly than a rock falls on Earth. A person who weighs 100 pounds on Earth would only weigh about 38 pounds on Mars because of the reduced gravity.
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what phase is the moon in when it rises around noon? what phase is the moon in when it rises around noon? third quarter first quarter new full none of the above because the moon always rises around sunset.
First Quarter phase is the moon in when it rises around noon.
When the Moon rises at noon, what phase is it in?During the first quarter phase, the western half of the Moon is illuminated to resemble the letter "D." The Moon rises at noon that day and sets at midnight. When the Moon is in its waxing gibbous phase, it is mostly bright, and the illuminated area is egg-shaped (gibbous), with the eastern edge shadowed.
Lunar phases are the many phases of the moon. The sun's light is reflected by the moon, which does not produce any light of its own. New moons occur when the distant side of the moon is illuminated by sunlight. A new moon is visible when it reflects from a side that is close to it.
The moon goes through eight phases: new moon, waxing crescent, first quarter, full moon, waxing gibbous, third quarter, and declining crescent.
It takes the moon 29.5 days, or roughly one month, to go through all of these phases. This cycle of the moon changing phases is known as the lunar cycle.
Gibbous phases appear when more than half of the moon is illuminated, while crescent phases occur when just half is lighted.
Waxing is an increase in illumination, whereas waning is a reduction.
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What is the velocity of an orange that falls from the rest for 2.17 seconds
The final velocity of the orange will be equal to 21.27 m/s.
What is the equation of motion?The equations of motion have established the relationship between the acceleration, velocity, time, and displacement (s) of a moving object.
The equations of motions can be mathematically expressed as:
[tex]v = u +at\\S=ut +\frac{1}{2}at^2\\ v^2-u^2=2aS[/tex]
Given, the velocity of the orange was at rest initially, therefore, u = 0
The time taken by the orange to fall, t = 2.17 s
The acceleration of orange due to gravity, g = 9.8 m/s²
From the first equation of motion, we can find the final velocity after 2.17 s:
v = u +gt
v = 0 + (9.8) × 2.17
v = 21.27 m/s
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an outboard motor for a boat is rated at 35 hp. if it can move a particular boat at a steady speed of 35 km/h, what is the total force resisting the motion of the boat?
The total force resisting the motion of the boat will be 26850.6 Newton when an outboard motor for a boat is rated 35 hp.
What is force and what is the total force resisting the motion of the boat?Force is the quantity which is technically the product of mass and acceleration .Here the question is about a boat which is rated at 35 hp and speed of 35 km/h and the force resisting the motion of the boat is asked.Putting the formula P = F x v , that is power equals force multiply speed we can calculate the speed.F= P/V , converting power to watt , 35 hp= 35 x 745= 26,075 watt of the power used.Now converting speed into m/s , 35 km/hr = 35 x 5/18 = 9.7 m/s and then diving power and speed , 26075/ 9.7 = 26850 N.To know more about force visit:
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when an object is moving in a circle at constant speed, its acceleration is a. constantly increasing b. constant in direction
The acceleration of an object is moving in a circle at constant speed is just constant (or constant in magnitude). It is not constant in direction nor constantly increasing.
What is acceleration?Acceleration in physics is defined to be the rate of change of the velocity of an object with respect to time. Acceleration, including centripetal acceleration, is a vector quantity because it has magnitude as well as direction. Objects that are changing speeds or changing directions (or changing both) are said to be accelerating.
Centripetal acceleration is the acceleration of a body traversing a circular path. It is equal to velocity squared over radius. Since an object traveling on a circular path is constantly changing directions, even at constant speed, the object is accelerating as well.
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the airplane in the image below is flying horizontally (parallel to the ground) with a velocity of 65.0 m/s and an altitude of315 m when it releases a care package. if we ignore air resistance, how far (measured in meters)will the package travel along the horizontal,x-dimension (range) before hitting the ground?
The package travel along the horizontal 516.1 m before hitting the ground.
When an object was released from a plane with a constant speed, the object also has a gravity force. So the object has a projectile motion.
Along the x-axis, the object gets uniform velocity.If the problem didn't give the magnitude of the acceleration due to gravity, we can assume it's 10 m/s².
Calculate elapsed time.
[tex]h = \frac{1}{2} gt^2[/tex]
[tex]315 = \frac{1}{2} \times 10 \times t^2[/tex]
315 = 5 × t²
[tex]t^2 = \frac{315}{5}[/tex]
t² = 63
[tex]t = \sqrt{63}[/tex]
t = 7.94 s
Calculate the displacement.
d = uₓ × t
d = 65.0 × 7.94
d = 516.1 m
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computerized x-ray imaging in the transverse plane: a.magnetic resonance imaging (mri) b.ultrasonography c.lymphadenectomy d.lymphangiogram e.ct scan
CT scan stands for computerized x-ray imaging in the transverse plane.
What is CT scan?X-rays can flow through it. Images of the body are produced in three planes using magnetic fields and radio waves (coronal, sagittal and axial).Through computer processing, cross-sectional images (slices) of bones, blood arteries, and soft tissues inside your body are produced during a computerized tomography (CT) scan, which combines a number of X-ray images collected from various angles all over your body.The body is divided into superior and inferior halves by an anatomical plane called the transverse plane, also referred to as horizontal plane, axial plane, and transaxial plane.CT images, which are two-dimensional images of three-dimensional physical things, are commonly used. In order to create the photographs, electrical energy (moving electrons) must first be converted into X-ray photons, which must then be passed through an object and detected before being converted back into electrons.To learn more about CT scan refer to :
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if the sun were replaced by a one-solar-mass black hole, group of answer choices our clocks would all stop. we would immediately escape into deep space, driven out by its radiation. we would still orbit it in a period of one year. all terrestrial planets would fall in immediately. life here would be unchanged.
we would still orbit it in a period of one year if the Sun were to be replaced with an equally huge black hole.
What if Sun is replaced by black hole?All of the planets would continue to orbit the black hole in their current positions at a safe distance if the Sun were to be replaced with an equally huge black hole.Without the Sun's heat and light, life would be impossible, yet Earth would still exist.The Sun would still be in the center of Earth's orbit.It goes without saying that the Earth's temperature would alter and that we wouldn't be affected by solar winds or solar magnetic storms.we would still orbit it in a period of one year if the Sun were to be replaced with an equally huge black hole.To learn more about Black hole refer,
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a 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min. what centripetal force must she exert to stay on if she is 0.891 m from its center? (hint: it's more than double her weight).
342.5 N of force must she exert to stay on if she is 0.891 m from its center while 22.0 kg child is riding a playground merry-go-round that is rotating at 40.0 rev/min
Since we are given the mas of the child which is 22.0 kg and the number of revolutions which is 40.0 rev/min which will be :
n=2*3.14 *40.0 /60 = 4.18 radians/s
and the distance from the center is 0.891 m( r). The formula we are referring to calculates the centripetal force :
F= m(n)²* r
=22(4.18)²*0.891
= 342.49 = 342.5 N
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