two ice skater, one is 60kg, the other 40kg. when the 60kg man pushes the 40kg woman with 120 n force, what will be the acceleation for the 40kg and 60 kg person respectively?.please enter only the number, no unit!

A description of Benson's real-life problem that has to be solved is below:

Benson, a final year medical student shared a reflection of his past problems before gaining admission into the higher institution.

I have cried countless times as a result of my failures in the past. Sometimes when I was still in my high school, I was too overconfident in myself as to the level of my intelligence in class. This continued to the extent at which I stopped attending classes and at the end all these, I was shocked to receive the news that I had failed GSCE results.

I was mocked by all and sundry and humiliated. I repeated this exams for 5 years. Solving this problem made me remain on a fixed point and became a tool of fixation of failure to myself and those that were following my footsteps back in highschool.

Thank goodness for my father who stood by me in all my trials and injected me with alot of belief perseverance that I will come out of this problem and live my dream of becoming a medical doctor. Finally, I conquered the situation after many years and later continue my pursuit to apply for medicine and surgery in higher institution.

So therefore, it can be deduced from all said and done above that: you are what has happened to you. Take responsibility for your problems.

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When a block slides at constant speed down a ramp while acted on by the forces.

A. True

B. False

C. False

The magnitude of dynamic friction is directly proportional to the magnitude of the normal force and the roughness between the sliding surfaces. The magnitude of static friction is directly proportional to the magnitude of the normal force and the roughness between the sliding surfaces. The normal force is not necessarily equal to gravity, but the force perpendicular to the surface on which the object is sliding.

In other words, the normal force is the force that pushes two surfaces together, and the stronger the normal force the stronger the frictional force. Another fairly common force is the frictional force. Similar to the normal force, it is caused by direct contact between surfaces. However, normal forces are always perpendicular to the surface while frictional forces are always parallel to the surface.

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Answer:

Explanation:

 Given:

H = 3.6 m

V = 0 m/s

g = 9.8 m/s²

_________

V₀ - ?

Potential energy = m·g·H

Kinetic energy = m·V₀² / 2

Let's equate:

m·V₀² / 2 = m·g·H

V₀² / 2 = g·H

Starting speed:

V₀ = √ ( 2·g·H )

V₀ = √ (2·9.8·3.6) ≈ 8.4 m/s

If there is no nozzle attached and the average hose velocity is 6 ft/s, determine p. Neglect little elevation changes and losses. = 70f7.

Velocity, as opposed to speed, refers to the pace and direction of an object's movement as it moves down a path. In other words, whereas velocity is a vector, speed is a scalar quantity.

Simply said, velocity is the speed at which an object is moving in a particular direction. using a car travelling north on a highway as an illustration or a rocket after it has taken off as an illustration of speed. Scalar implies that the absolute magnitude of the velocity vector will always equal the speed of the motion.

186,282 miles per second is another way to express the speed of light. In dry air, the speed of sound is 343.2 meters per second.

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Electrical energy is converted into the kinetic energy of the spinning fan and the thermal energy of the heated coils within a hair dryer when the appliance is turned on.

Electrical energy is the capacity of the charged particles in an atom to start an action or move an object. The movement of electrons between atoms results in the production of electrical energy.

Every time you plug your toaster and phone charger into a wall socket, electrical energy is used to power them. Electric eels, batteries, and lightning are additional sources of this kind of power. However, electrical energy can also be converted into other types of energy, such as the thermal energy that warms your toaster and toasts your bread, or the mechanical energy that drives the acceleration of an electric car.

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Because the location of the outermost electron is unclear and we are unsure of its exact location, calculating the atomic radii is fairly challenging.

A chemical element is uniquely defined by its atoms, which are tiny pieces of substance.

An atom is made up of a core nucleus and one or more negatively charged electrons that orbit it. The positively charged, comparatively hefty protons and neutrons that make up the nucleus may be present.

The overlap of ions in a lattice structure makes it challenging to estimate the ionic radius.

Ionic radius typically decreases from group 1 to group 3 since the produced ions have a larger nuclear charge, more protons, and smaller ionic radius due to the electrons being drawn closer to the nucleus.

Calculating the atomic radii is fairly difficult because the location of the outermost electron is obscure and we are unaware of its precise location.

Thus, it is difficult to describe atomic radius and the ionic radius.

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The magnitude of the charge on the particle is 0.0083 C.

Solution:

The centripetal force if it is moving in a circle is mv^2/r. Since this is coming from the magnetic force, then

mv^2/r = qvB

q = (mv^2/r)/(vB) = (mv)/(rB)

q = .002*5/(.2*6) = 0.0083 C

The magnitude of the electric field E produced by a charged particle at a point P is the electric force per unit positive charge exerted on another charged particle at that point. The direction of the electric field is the direction of the force on the positive charge. The electric field vector magnitude is calculated as the force per charge for any testing charge in the electric field.

The force on the test charge can be directed toward the source charge or directly away from the source charge. Electron charge can be determined simply by placing a known number of electrons on one electrode of a capacitor and measuring the voltage Vs across the capacitor.

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electric force would a proton experience at the same point is .156 × 10⁻¹⁹ N/C.

Electric field :

The electric field is the amount of electric force per charge, and the electric force on a charge at a given point in space is the amount of charge multiplied by the electric field at that location.

E = F/q

where,

E = electric field

F = force

q = charge

A force experienced by an alpha particle = 0.250N

E = F/q

E =  0.250 /1.6 × 10⁻¹⁹

E = 0.156 × 10⁻¹⁹ N/C

electric force would a proton experience at the same point is .156 × 10⁻¹⁹ N/C.

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The speed of the ball immediately after being struck is 28.65 m/s.

Impulse is equal to momentum change when a collision happens and no external forces on the system.

I = Δp

I = p' - p

I = mv - mu

Parameter

I = mv - mu

9.97 = 0.34v - (0.34×0)

9.97 = 0.34v

[tex]v = \frac{9.97}{0.34}[/tex]

v = 28.65 m/s

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According to first law of thermodynamics, work done by system will cause a decrease in internal energy, assuming that there is no heat is transfer to or from the system.

The first law of thermodynamics explains that energy can neither be created nor destroyed, only be changed from one form to another.

The law states that the energy entering the system in the form of heat is equal to the sum of the increase in the internal energy of system and the energy leaving the system is in the form of work done by the system on surroundings.

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The vertical acceleration of the ball at its highest altitude is 0 m/s.

It is possible for an item to have both zero acceleration and non-zero velocity because acceleration is the change in velocity. Since there is no change in velocity while an object is moving at a constant speed, it experiences no acceleration.

The bullet reaches its highest point when its vertical velocity is zero. The vertical portion of the velocity vector will now point downward. The projectile's horizontal range, which is determined by the object's beginning velocity, is referred to as the projectile's range.

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We can determine the direction of the magnetic field of the current-carrying wire in the vicinity of the loop using the right-hand rule.

The right-hand rule is a common mnemonic in physics for remembering the direction of magnetic forces. A similar form of the right-hand rule, which is also called the right-hand grip rule, is used to find the direction of the magnetic field in a current-carrying wire.

The direction of the magnetic field made by a current in a wire curls around the wire in a ring. You can find the direction by curling your fingers and pointing your right thumb in the direction of the current in the wire. Your fingers will be curled in the same direction as the direction of the magnetic field around the current-carrying wire.

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If the line segment is slopping up, what that means is that the object is speeding up.

The term graph has to do with a plot that is shown on the x - y Cartesian plane that a vertical and a horizontal axis. In the  distance vs. time graph, the distance is plotted on the vertical axis and the time is plotted on the horizontal axis.

We know that a line could be drawn that joins the plots in a graph. The slope if the graph can be obtained from this line of best fit that is obtained from the graph. This line could be moving upwards or downwards.

If the line is moving downwards, it means that the slowing down but a motion in the upwards direction could mean that the object is speeding up. Thus we have an increase in the speed of the object as the object is in motion.

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Answer:

motion in the positive direction

Explanation:

Remember "a straight line indicates a constant velocity"

Answer:

Explanation:

And what to find in the problem?

Pulleys are strong, efficient devices. They have the power to shift a force's direction, which makes it much simpler for us to move objects.

For the transmission of energy and motion, pulleys can be used alone or in conjunction. Sheaves are the name for rimmed pulleys with grooves. In a belt drive, pulleys are attached to shafts at their axes, and power is transferred between the shafts using endless belts that pass over the pulleys.

The four different types of pulleys are complex, compound, moveable, and fixed. A fixed and movable pulley make up compound pulleys.

The main benefit of using pulleys is that it requires less effort than simply lifting weights normally. To put it another way, it lessens the actual force needed to lift heavy objects. Additionally, the force's direction is altered.

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The resistance of the light bulb has the power of 40 W is 722.5 ohms

The power of the light bulb = 40 W

The maximum voltage of the lightbulb = 170 V

Therefore, the resistance of the light bulb can be found using the formula,

                        P = V² / R

where P is the power of the lightbulb

           V is the voltage of the lightbulb

           R is the resistance of the lightbulb.

Let us re-write the above equation in order to get the value of the resistance,

                    R = V² / P

Let us substitute the known values in the above equation, we get

                   R = (170)² / 40

                      = 28,900 / 40

                      = 722. 5 ohm

Therefore, the resistance of the light bulb is 722.5 ohms.

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The height of a hill from which the person throws a ball horizontally with a velocity of 12 m/s and the ball lands 10.1 m away from the hill is 3.47 m.

The height of a hill from which the person throws a ball horizontally with a velocity of 12 m/s and the ball lands 10.1 m away from the hill is calculated as follows;

The ball was projected horizontally from the top of a hill, therefore, there is no vertical component of the velocity of projection and the object is considered to be undergoing free fall under gravity from a height, h.

The height from which an object falls freely under gravity is calculated with the formula below:

H = gt²/2

where g is the acceleration due to gravity = 9.81 m/s²

t is time.

the time taken for the fall = horizontal distance / velocity

t = 10.1 / 12

t = 0.841 s

Therefore;

h = 9.81 * (0.841)² / 2

h = 3.47 m

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The additional power required to carry the plate at speed of 72 km/hr is 4867.8 m/s.

Given data,

[tex]l[/tex] (wide of plate) = 1.9m

[tex]h[/tex] (high of plate) = 0.5m

ρ (air density) = 1.22

[tex]V[/tex] (speed) = 72km/hr

assume [tex]C_{D}[/tex] (Drag coefficient) = 1.05

To determine the additional power can be calculated as follows:

First, we have to determine the area of plate

Area of plate = [tex]l[/tex]×[tex]h[/tex]

= 1.9×0.5

Then, we have to convert the unit of speed from km/hr to m/s

72km/hr = [tex]\frac{72000}{3600}[/tex]

= 20 m/s

Next, we can determine the power by using the formula

=[tex]\frac{1}{2}[/tex]×[tex]C_{D}[/tex]×ρ×[tex]V^{2}[/tex]×[tex]A[/tex]×[tex]V[/tex]

=[tex]\frac{1}{2}[/tex]×[tex]1.05[/tex]×[tex]1.22[/tex]×[tex]20^{2}[/tex]×[tex]0.95[/tex]×[tex]20[/tex]

=4867.8 watt

Thus, The additional power required to carry the plate at speed of 72 km/hr is 4867.8 m/s.

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According to the work-energy theorem, twice the speed corresponds to 4 times the energy and 4 times the driving distance.

There are different forms of energy on earth. The sun is considered the elementary form of energy on earth. In physics, energy is considered a quantitative property that can be transferred from an object to do work. Therefore, we can define energy as the force required for any  physical activity. So we can define energy in simple words as follows Energy is the ability to do work  According to the laws of conservation of energy, "energy can neither be created nor destroyed, it can only be changed from one form to another". The SI unit of energy is the joule.

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Option A,C  It decrease the strength of the magnet and also decrease the number of coils in the solenoid.

A device called a solenoid is made up of a casing, a coil of wire, and a moving plunger (armature). A magnetic field develops around the coil when an electrical current is injected, drawing the plunger in. A solenoid, put more plainly, changes electrical energy into mechanical work.

Copper wire is twisted tightly in a coil that has several turns. The creation of a powerful magnetic field or flux occurs when an electrical current runs through this wire.

The coil is enclosed in a housing, which is often composed of steel or iron, which concentrates the magnetic field it produces.

The magnetic field's concentration, which provides the mechanical force needed to perform the action, draws the plunger to the stop.

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The acceleration will be 0.35 m/s^2 if he pulls with the same force when the wagon contains a child weighing 3 times of wagon.

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An example of a collision without physical contact is a charged particle being deflected by another charged particle as they travel by one another.

Another illustration is a gravitational slingshot, in which a light object moves around a much heavier object to accelerate. A collision does not require the objects to actually touch; for instance, an asteroid passing by the earth is seen as one since its course is altered by the gravitational pull of the planet. The conservation of momentum and energy can still be used to assess the collision. Yes, even without direct touch, an accident may still occur.

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The magnitude of Mars' gravitational field is 3.66 N/kg.

The approximate acceleration due to gravity experienced by the spacecraft is 3.66 m/s².

The gravitational fields of the Mars is calculated by applying the following equation;

E = F/m = GM/r²

where;

E = (6.626 x 10⁻¹¹ x 6.39 x 10²³) / (3.4 x 10⁶)²

E = 3.66 N/kg

The approximate acceleration due to gravity experienced by the spacecraft is calculated as follows;

F = mg = GmM/r²

g = GM/r²

where;

g = (6.626 x 10⁻¹¹ x 6.39 x 10²³) / (3.4 x 10⁶)²

g = 3.66 m/s²

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Current is generated from the flow of electrons. To generate current the circuit must be complete. Hence, the battery must fill with the wire of electrons.

A battery is an electrical component to power electronic devices. It is working with the principle of electrolysis. Where an electrolyte is used in which the two electrodes are dipped.

A redox reaction taking place there generate a chemical energy and which then converted to the electrical energy.The electron flow must be connected to a complete circuit.

Hence, without filling the electron in the battery it may not work. When it is connected with the wire to the external circuit it will passes the current to the devices.

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Any point in the wire has 1.12 x [tex]10^{19}[/tex]. electrons flow per second.

The current is the quantity of charge Q flowing through a certain point of the wire in a time interval of [tex]\Delta t[/tex].

I = [tex]\frac{Q}{\Delta t}[/tex].

by using this relationship

I=1.80 A, we can find the charge passing any point in the wire in 1 second:

Electric Charge, Q = 1.80 C.

To find how many electrons corresponds to this charge, we should divide this value by the charge of a single electron

charge of the electron = 1.6 x [tex]10^{-19}[/tex] C.

No. of Electrons = Q/q = [tex]\frac{1.80}{1.6* 10^{-19}}[/tex]= 1.12 x [tex]10^{19}[/tex].

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The work done by gravitational force and tension in the cable is wg > 0 and wt <0. option 2 is correct.

The work done by the force is given as :

W = Fdcosθ

where

F= force

d = displacement

θ = angle between directions of F and d

when force and displacement are parallel then :

θ = 0

cosθ = ±1

so work done is positive

when force and displacement are anti-parallel then :

θ = 180°

cosθ = -1

so work done is negative.

then crane is moving downward. the force is also downward and tension is upward.

The work done by gravitational force and tension in the cable is wg > 0 and wt <0. option 2 is correct.

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Neither. The glass without the ice cube has some weight with the glass with the ice cube.

We hаve аn ice cube of mаss m floаting in the wаter. If it is floаting (in equilibrium), it will hаve to displаce enough wаter to support its weight. How much is thаt? It is just Volume = m/d, where m is the mаss of the ice cube, аnd d is the density of wаter.

Where the ice hаs melted, it turns into a wаter of volume. Volume = m/d exаctly the sаme volume аs it displаced before. So the аdded volume is the sаme, so the level of the wаter will not chаnge.

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The wire must be cut at a length of l/5 along its length so that the resistance of one piece is four times the resistance of other.

The relation between the resistance the resistivity the area and the length of the wire is given by,

R = pl/A

p is resistivity,

A is the area,

l is the length of the wire.

Let us say that the peace of length X is cut from the wire,

So, length of one piece is x and of the other is (l-x)

The resistance of the bigger price has to be four times of the other.

So, we can write,

px/A = 4p(l-x)/A

x = 4l-4x

5x = l

x = l/5.

So, the wire should be cut at a point l/5 from one of the ends of the wire.

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Inelastic collision The total momentum of the system prior to the collision was 22 361 kg*m/s, and as momentum is conserved, it is also the total momentum of the system following the collision.

The system's overall momentum is distributed equally among all of the automobiles due to their equal mass. In an inelastic collision, as opposed to an elastic impact, internal friction prevents the conservation of kinetic energy. Is called inelastic collision.

Momentum, also known as linear momentum, translational momentum, or simply momentum in Newtonian physics, is the result of an object's mass and velocity. It has a direction and a magnitude, making it a vector quantity.

final to original total momentum is equal to 22361/22361, which is 1.

therefore beginning and ultimate momentum are equal.

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