a concave mirror of focal length 10 cm forms an upright and diminished image of a real object placed at a distance of 5 cm from the mirror. question 17 options: true false

There is gravity on the Moon, just not as much as on Earth. So a catapult would be able to throw it's ammunition about six times farther than the same catapult on the Earth.

There may be gravity at the Moon, simply not as much as on the planet. So a catapult could be able to throw it's ammunition about six instances farther than the same catapult on this planet. things do not waft at the Moon. They fall, however they do fall slowly, slower than they do on the earth.

Catapults take advantage of elastic force, regarding stretched, compressed, bent, or twisted cloth. To prepare a catapult to launch a rock, it takes paintings to twist a rope, to stretch a rubber band, or bend wood.

Catapults operate the usage of projectile movement, that is a form of science referred to as Physics. Catapult physics is essentially the usage of stored strength to hurl a projectile. The three primary strength storage mechanisms are tension, torsion, and gravity.

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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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The reason for using the power model to describe the relationship between the length and the period of the pendulum is because there is a linear relationship between the scatter plots of log (length) vs. log (period of pendulum), but none can be seen in the residual plot.

In the "Power Models" unit, discover which circumstances may be explained by power models, inverse power models, and quadratic models. Additionally, you'll learn how to use the formulae y = ax₂, y = ax₃, y = a/x₂, y = a/x₃, and y = ax₂ + bx + c to compare patterns in tables and graphs of models. Here, x₂ and x₃ are the length of the pendulums at particular instants.

In the framework of these models, they also begin to understand the idea of rate of change. Here, some skills are acquired, like visually solving quadratic equations and simplifying radical and exponential forms. Additionally, direct and inverse variation concepts and phrases are taught.

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The mass of object a need to be to balance objects b and c is 12kg

Find man of b

1=[tex]\frac{m_{c}}{m_{b}+m_{c}}[/tex]×4

1=[tex]\frac{1}{1+m_{b} }[/tex]×4

[tex]m_{b}[/tex]=3kg

1=[tex]\frac{(m_{b}+m_{c} )}{m_{a} +(m_{b} +m_{c} )}[/tex]  ×4

1=4×4/[tex]m_{a}[/tex]+4

[tex]m_{a}[/tex]=12kg

As a measure of inertia, which is a fundamental characteristic of all matter, mass is used in physics. Effectively, it is the resistance a body of matter offers to a change in its speed or position as a result of the application of a force. The change caused by an applied force is proportional to the mass of the body. The kilogram is the measure of mass in the International System of Units (SI). Its definition is based on the Planck constant, which is set at 6.62607015 1034 joule second. The unit of energy known as a joule is one-kilogram times one square meter per second. The kilogram is determined by precise measurements of Planck's constant, while the second and metre are previously defined in terms of other physical constants.

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the meter stick so that it is in balance is 56 cm

Taking the equilibrium of Torque about C

200g (40 + x) + 100g x = 400g (30 - x)

200 (40 + x) + (100) x = (400) (30 - x)

x = 5.71

so location = 50 + 5.71 = 55.71 cm = 56 cm

chemical equilibrium is the state during a reversible chemical process where there is no net change in the amounts of reactants and products. When a chemical reaction is reversible, the products react with the original reactants as soon as they are created. There is no net change in the quantity of the constituent substances when the two opposing processes are in equilibrium because they are occurring at identical rates or velocities. The reaction may now be regarded as being finished, meaning that the maximal amount of reactants to products has been converted under the given reaction conditions.

It is possible to quantify the equilibrium-related conditions. For instance, in the reversible reaction A B + C,

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Out of all the planets, Jupiter has the most mass. Of all the planets, Jupiter has the strongest magnetic field. Of all the planets, Jupiter rotates the most quickly.

With a rotational velocity of 28,273 miles per hour (or 43,000 kilometers per hour), Jupiter's equator rotates a little more quickly than its polar regions. Jupiter's day ranges from 9 hours, 56 minutes near the poles to 9 hours, 50 minutes towards the equator. As the largest planet, Jupiter has the gravitational ability to draw in the most mass as it travels through space, making it the planet with the quickest rotation. Jupiter acquires the angular momentum of whatever mass it comes into contact with, including gas, dust, and rock, in addition to the mass itself. One rotation of Jupiter, for instance, takes 9 hours and 55 minutes, although it rotates at a speed that is 27 times quicker than Earth's at its equator.

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the revolutions are about 116 revolutions

what is revolution?

A revolution is the movement of one thing around a centre or another object, the forcible overthrow of a government by the people, or any abrupt or large change.

Our solar system, which includes the sun, planets, and numerous asteroids, formed around 4.5 billion years ago. The gravitational collapse of a massive cloud and dust in space resulted in the formation of the solar system. This caused a disturbance in the cloud, causing clumps of gases to form due to gravity.

t=45.7s

α=116 revolutions

ω₀=32.o rad/s, ω=0

α=-0.700 r/s²

ω= ω0 +at

0=32.0r/s+ (-0.700r/s2)t

T= -32/-0.700

=45.7s

We use the equation below to find revolutions.

ω2= ω20 +2aα                        

substitute the values

0=(32)2 + 2(-0.7r/s2)α

α=731 rad

the rads are converted to revolutions:

α=731x1/2π

=116 revolutions

so the revolutions are about 116 revolutions

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In order to determine where a sound is coming from,These signals include  the ear the sound strikes first and  the volume of the sound when it reaches each ear .

In order to determine where a sound is coming from, humans rely on two key clues.

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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 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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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 speed of the toy train travelling on a circle-shaped track is 2.0 m/sec also called velocity of the train.

The formula for centripetal acceleration is a = v2 / r, where a stands for acceleration, v for velocity, and r for radius. Rearranging terms:

v = sqrt(ra)

v = sqrt( [0.5 m * 8.0 m/sec^2] )

v = sqrt( 4.0 m^2/sec^2 )

v = 2.0 m/sec

The speed of toy train is 2.0 m/sec

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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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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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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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The acceleration is going to be down the ramp as the cars roll up it and it's the same direction. In all 3 cases.

Acceleration is the rate at which an object's velocity with respect to time changes. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration.

According to Newton's Second Law, the amount of an object's acceleration is the combined result of two causes :

A linear acceleration is the acceleration of the car in the direction it is moving, and it causes the passengers to feel a force pushing them back into their seats.

The acceleration that is used when changing direction is referred to as radial acceleration, and the reaction that the passengers feel is a centrifugal force.

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The capacitor's reactance decreases as the frequency being applied to it rises. Similarly, the reactance value of the capacitor increases as the frequency across it decreases. The complex impedance of the capacitor is the name of this variation.

Because capacitance equals inductive reaction

Xc = XL

2*pi*frequency*L = 1/(2*pi*frequency*C)

frequency^2 = 1/(4*pi^2*L*C)

frequency = 1/2 * pi * sqrt(L*C)

frequency = 1/ (2*3.142*sqrt(1.1*10^-3*11*10^-6))

frequency = 1446.67 Hz

Reactance is the resistance that a capacitor and an inductor provide to an AC current in a circuit. Reactance and resistance are relatively similar, although reactance changes depending on the frequency of the ac voltage source. Ohms are used to measure it.

Either an increase in frequency or capacitance causes a reduction in capacitive reactance. As the frequency approaches zero in the limit, the capacitive reactance reaches an infinite value. Zero frequency for the generator implies the presence of a battery or other dc source.

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In the 1960s, it was proposed that quasars could be compact objects ejected quickly from the cores of adjacent regular galaxies.

Nobody anticipated that an object that resembles a star could have its spectral lines so drastically redshifted.

It's a concept that makes sense when you consider that as light's wavelength is extended, the spectral lines appear to have "shifted" toward the red portion of the spectrum.

Sound waves experience a similar effect when a source moves in relation to an observer.

As a result of the emission lines being "red shifted," astronomers initially had trouble distinguishing them in quasar spectra at optical wavelengths.

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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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The motion is critically damped is 0.69 m.

The mass of a body is the amount of matter it contains. It is a scalar value. Weight: A body's weight is the force with which the earth attracts it. It is the effect of gravity.

The property of matter that measures its resistance to acceleration in physics. The mass of an object is roughly equal to the number of atoms in it. The kilogram is the fundamental unit of mass measurement. Weight = mass multiplied by gravity's acceleration

critically damped: βω0.

x = [tex]$\left(C_1+c_2 t\right) e^{-\beta t}$[/tex] = 2 J t = 0

[tex]$\dot{x}=\left(c_1+c_2 t\right)\left(-\beta e^{-\beta b}\right)+c_2 e^{-\beta t}$[/tex] = 0 st = 0

[tex]$c_1=2 . \quad c_2=\beta \cdot 2$[/tex]

Now, [tex]$\omega_0=\sqrt{\frac{b}{m}}$[/tex]

Let the equation be mg = k . 2

so, √g/2 = √k/m = [tex]$\omega_0$[/tex]

[tex]$c_1[/tex] = 2, [tex]$c_2[/tex] = √(8/2) × 2 = 2√5

x = [tex]$(2+2 \sqrt{5} t) e^{-\sqrt{5} t}$[/tex] or [tex]$(2+2 \sqrt{3}) e^{-\sqrt{s}}$[/tex] = 0.69 m

Therefore the motion is critically damped is 0.69.

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To calculate the density, known the volume and density formula.

What is density?

How tightly a material is packed together is determined by its density. The definition of it is the mass per unit volume. Density Formula: D = m/V, where D stands for density, m for mass, and V for volume, denotes the mass and volume of the object, respectively.

What is volume?

Any three-dimensional solid's volume is simply the amount of space it takes up. A cube, cuboid, cone, cylinder, or sphere can be one of these solids.

Let mass of the sphere be m and radius be r, then,

m= v × p ∴ v= volume

or

m= 4/3πr³× p⇒1

now new diameter, d¹= 1/4d and d=2r

so, d¹= 1/4 × 2r⇒ d¹=1/2r also,

d¹=2r¹ so, 2r¹ = 1/2r⇒  r¹= 1/4r

logs is same, there is no change in it then,

m=v¹×p¹

m=4/3πr¹^3ₓp¹

or m=4/3π(1/4r)^3×p¹⇒2

(1) is equal to (2) so,

4/3π(1/4r)^3×p¹=4/3πr^3×p

1/64r^3×p¹ = r^3×p

p¹=64p

Therefore denisty will be 64.

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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 cosmopolitan theory holds that all people belong to the same community.

In the center of The Las Vegas Strip, The Cosmopolitan is a one-of-a-kind luxury resort hotel and casino.

The notion that all people belong to a single community is known as cosmopolitanism. The term "cosmopolitan" or "cosmopolite" refers to its devotees. In a "universal society," people can and should be "global citizens," according to cosmopolitanism, which is both prescriptive and aspirational.

Cosmopolitan culture denotes shared politics and a diversity of cultures. Additionally, it places a strong emphasis on intercultural communication and offers those from one culture the chance to learn from others.

With more than 50 worldwide editions, Cosmopolitan, also known as Cosmo, is a monthly magazine for women. Short stories and advice-focused articles about romance, sex, fashion, entertainment, and vocations may be found in the magazine with lots of advertisements.

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1)The current flowing when:

(A) 75 m C pass a point in I min will be 1.25 *  [tex]10^{-3}[/tex] A

B) 0.5 GC pass a point in 2 hours will be  0.5 * [tex]10^{9}[/tex] C

C)  2.0 MC pass a point in 1000 hours will be 2 * [tex]10^{6}[/tex] C

The charge flow when the current flow is:

(A) 6.0 A for 5 min will be 1800 C

B) 250 mA for 4 hours will be 3600 C

C) 2.5 KA for 50 s will be 125 *  [tex]10^{3}[/tex] C

3A)  [tex]10^{9}[/tex] seconds will it take for pass 25 MC at a current of 25 mA

B) 4 seconds will it take for pass 48 C at a current of 12 A

C) 90 seconds will it take for pass 360 C at a current of 4.0 A

4) A) Potential difference  across the resistor will be  0.4 V

B) Total charge flow in 3 minutes will be  18 C

1 )

current = charge / time

A) 75 m C = 75 * [tex]10^{-3}[/tex] C

current = 75 * [tex]10^{-3}[/tex] C / 60 = 1.25 *  [tex]10^{-3}[/tex] A

B ) 0.5 GC = 0.5 * [tex]10^{9}[/tex] C

current =  0.5 * [tex]10^{9}[/tex] C  / 216000 = 0.0023 * [tex]10^{5}[/tex] =2.3 * [tex]10^{2}[/tex] A

C) 2.0 MC  = 2 * [tex]10^{6}[/tex] C

current =  2 * [tex]10^{6}[/tex]  / 36 * [tex]10^{5}[/tex] = 0.0556 * 10 A

2) charge = current * time

A) Q 1 = 6 * 300 = 1800 C

B) Q2 = 250 * [tex]10^{-3}[/tex] * 14400 = 3600 C

C) Q3 = 2.5 * [tex]10^{3}[/tex] C * 50 = 125 *  [tex]10^{3}[/tex] C

3 )

time = charge / current

A) T1 = 25 * [tex]10^{6}[/tex] / 25 * [tex]10^{-3}[/tex] = [tex]10^{9}[/tex] seconds

B) T2 = 48 / 12 = 4 seconds

C) T3 = 360 / 4 = 90 seconds

4)

a) V = IR ( using ohm's law )

       = 0.1 * 4 = 0.4 V

b) charge = current * time

                = 0.1 * 180 = 18 C

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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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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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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"

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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Spraying an asphalt road with water will make it easier to walk across and bare feet on a hot sunny day because it has a high specific heat capacity.

This is referred to as the amount of heat which is required to raise the temperature of the unit mass of a given substance by a given amount.

Water as a compound has a very high specific heat capacity which means that it needs a high amount of heat for the temperature to change. This therefore means that when the water is sprayed on the surface, the road doesn't become too hot and can be walked on with the barefoot which makes it the correct reason.

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