The two graphs shown represent the motion of two blocks with different masses, m1 and m2. The blocks are oscillating on identical springs. Which of the following statements correctly describes the relationship between m1 and m2 and provides evidence from the graphs?

Answer:

5

Explanation:

Answer:

B. The airplane is propelled in the opposite direction as the hot gas.

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The region with high electric potential  (80 V and 70 V) will have high electric field while the region with low electric potential (20 V) will have low electric field.

Electric field is the field that surrounds electrically charged particles and exerts force on all other charged particles in the field.

E = V/d

where;

Since electric field is directly proportional to electric potential, the region with high electric potential  (80 V and 70 V) will have high electric field while the region with low electric potential (20 V) will have low electric field.

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Answer:

Vector sum.

Adding two things together to make one is usually referred to as a sum, therefore, we can identify this as that.

Considering the Coulomb's Law, the combination of particle A: 12.0×10⁻⁴ C and particle B: 2.5×10⁻⁴ C would yield the same Coulomb force of 12 N.

Charged bodies experience a force of attraction or repulsion on approach.

From Coulomb's Law it is possible to predict what the electrostatic force of attraction or repulsion between two particles will be according to their electric charge and the distance between them.

From Coulomb's Law, the electric force with which two point charges at rest attract or repel each other is directly proportional to the product of the magnitude of both charges and inversely proportional to the square of the distance that separates them:

[tex]F=k\frac{Qq}{d^{2} }[/tex]

where:

The force is attractive if the charges are of opposite sign and repulsive if they are of the same sign.

In this case, you know that two particles are 15 meters apart and the resulting Coulomb force is 12 N.

On the other side, you know:

Replacing in the Coulomb's Law, you get:

Finally, the combination of particle A: 12.0×10⁻⁴ C and particle B: 2.5×10⁻⁴ C would yield the same Coulomb force of 12 N.

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Answer:

B load

Explanation:

definitely not D.

a power source is a battery or a power generator (like at power plants or on good old-fashioned bicycles to have light in the dark).

the fan uses the electrical energy coming from a power source.

if it would be a "propeller" at a wind farm (where power is generated by the wind blowing in between the blades making them turn and as such generating electrical power), then yes, but that is not what the description is telling us.

so, since it is using electrical power to do something, it is a load on the net or circuit or grid.

because it takes out some energy, the actual power generator has to work a little bit harder to maintain the energy level in the grid. just like you have to work harder when you have to carry a bigger weight (or load). hence the name.

the fan will have some conducive material inside (an electrical motor is a structure of coils of wires around magnets, and the power goes through these wires, so they have to be conductive).

and the fan will have a switch, which breaks or establishes the flow of electric energy and therefore determines, if and when the fan is working or not.

Answer:

Mechanical Energy (initial) = Mechanical energy (final)

Ep(initial) + Ek(initial) = Ep(final) + Ek(final)

mgh(initial) + 1/2mv²(initial) = mgh(final) + 1/2mv²(final)

m being the mass of the penguin (kg)

g being gravitational acceleration (9.80 m/s²)

v(initial) being zero

h(final) being zero,i.e. final height is zero

v(final) being final velocity

solve for h(initial) being initial height at the top of the glacier

answer will be in metres

NB: don't forget to square the velocity

Explanation:

Since they mentioned frictionless, we know that this is a closed system therefore we are free to use this equation of conservation of mechanical energy

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Answer:

Explanation:

Change in car's momentum = 700 * [4.5 - {-29)] = 23,450 kgm/s

Answer:

I can only define a few of them, hope you don't mind.

Seismic- It means connected with or caused by earthquakes

Epicenter- It means the point on the earth's surface where the effects of an earthquake are most felt strongly.

Fault- A place where there is a break that is longer than usual in the layers of rock in the earth's crust.

Tectonic waves- Waves connected with the structure of the earth's surface.

Plate boundaries- The boundaries that differentiates the large sheets of rock (called PLATES) that form the earth's surface. Plate tectonics is the movement of the large sheets of rocks that form the earth's surface

[tex] \: \: \: \: \: \: \: \: \: [/tex]

Answer:

2.3×10^-16

Explanation:

Charge of proton = 1.6×10^-19

let q(a) and q(b) be the two protons.

According to the Coulumbs Laws ;

F = kq(a)×q(b) / r^2

where k = 9.0×10^9 and r is the distance of seperation.

So having a distance of 1.0×10^-6 in our case ;

F = (9.0×10^9×1.6×10^-19×1.6×10^-19)/(1.0××10^-6)^2

F = (2.304×10^-28)/(1.0×10^-12)

F = 2.304×10^-16N

Since the both charges are positively charged they will repel .

The graph will be correct, if it shows a direct relationship between average kinetic energy and temperature of the gas molecules.

The average kinetic energy of a gas molecule is the energy possesed by the gas due to its relative motion.

Average kinetic energy of gas molecules has a direct relationship with temperature of the gas molecules. As the gas temperature increases, the kinetic energy of the gas increases and consequently, the speed of the gas increases as well.

Thus, the graph will be correct, if it shows a direct relationship between average kinetic energy and temperature of the gas molecules.

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Answer:

Select both

Explanation:

You included all needed information

Explanation:

Stephen learned that any two objects exert a gravitational force on each other.

If the distance between two objects triples, the gravitational force between

Stephen learned that any two objects exert a gravitational force on each other. If the distance between two objects triples, the gravitational force between them will change by a factor of 9.

The gravitational force is an unobservable force that draws things together. You remain on the ground thanks to Earth's gravity, a gravitational force is a force that also causes objects to fall.

The mathematical expression for the gravitational force is given by

F = G× m₁* m₂ / r ²

As given in the problem statement Stephen learned that any two objects exert a gravitational force on each other. If the distance between two objects triples,

The gravitational force between the objects is inversely proportional to the square of the distance between the object.

Thus, the gravitational force between them changes by a factor of 9.

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Answer:

1 m/s^2

Explanation:

The formula for accleration is a=Δv/Δt

where, Δv = final velocity - initial velocity = 4 - 0 = 4

initial velocity = 0 since the car starts form rest and final velovity is 4 as the car goes from rest till 4 m/s

Δt = 4 since the car takes 4 seconds to reach a velocity of 4m/s

Hence, a = 4 m/s / 4 s = 1 m/s^2

Answer:

1m/s

Explanation:

Given

initial velocity(u)=0

final velocity(v)=4m/s

timetaken (t)=4

Aceleration(a)=v-u÷t

now

=4-0÷4

=1m/s

Answer:

number 3

Explanation:

3 represents runoff

Runoff is the water collected after rainfall that drains from the surface area of land. It will be tricky to choose 4 which is likely a smaller waterbody draining to a bigger waterbody

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electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.

hope it helps...!!!

Answer:All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction. The force generated by the aligned atoms creates a magnetic field.

Explanation: I did this exact question before

Answer:

16 reflection,incidence

For A 53 g ice cube at −30◦C is dropped into a container of water at 0◦C, the amount of water that freezes onto the ice?  is mathematically given as

x = 9.93 g

Where

Energy received = energy given out

Generally, the amount of water is mathematically given as

(53)(0.5)(30) = (80)(x)

Therefore

x = (49)(0.5)(16)/(80)

x = 9.93 g

In conclusion, the mass of water

x = 9.93 g

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Answer:

Speed of the ball when it was thrown = 16.67 m/s

Height reached by the ball = 14.16 s

Explanation:

Given time in the ball comes to the same height from where the ball was thrown is 3.4 s.

Let us assume that the ball was thrown with a speed of u in the upward direction. Since only gravitational force acts on the particle in the downward direction, it has a constant acceleration in the downward direction.

We also know that a particle has the same magnitude of velocity when it is under a free fall at a fixed height but direction is opposite i.e., initially in the upward direction and finally in the downward direction.

https://tex.z-dn.net/?f=%5Ctherefore%20%5Cdfrac%7B-u-u%7D%7B3.4%7D%3D%20-9.8%5C%5C%5CRightarrow%20%5Cdfrac%7B2u%7D%7B3.4%7D%3D%209.8%5C%5C%5CRightarrow%202u%20%3D%209.8%5Ctimes%203.4%5C%5C%5CRightarrow%20u%20%3D%20%5Cdfrac%7B9.8%5Ctimes%203.4%7D%7B2%7D%5C%5C%5CRightarrow%20u%20%3D%2016.67%5C%20m%2Fs

Hence, the particle was thrown with a speed of 16.67 m/s.

Now, we also note that the particle has zero velocity at its maximum height.

So, from the initial position to the maximum height reached by the particle, we have

https://tex.z-dn.net/?f=0%5E2%20%3D%20u%5E2%2B2as%5C%5C%5CRightarrow%20s%20%3D%20%5Cdfrac%7Bv%5E2-u%5E2%7D%7B2a%7D%5C%5C%5CRightarrow%20s%20%3D%20%5Cdfrac%7B0%5E2-16.67%5E2%7D%7B2(-9.8)%7D%5C%5C%5CRightarrow%20s%20%3D14.16%5C%20m

Hence, the maximum height reached by the ball is 14.16 m.

An ideal simple machine is one that conserves forces because every input force is useful or not lost to friction and it is considered as a perfect or ideal system.

An ideal machine is a type of machine whose efficiency is 100 percent. This type of machine does not loss heat to friction or does no work against frictional forces.

When energy is not lost to friction, we say that such system is perfect or ideal. Or simply put, such system conserves forces.

In Ideal machine, mechanical advantage is one.

Mechanical advantage = output force / input force

In ideal simple machine, output force = input force

Therefore, ideal simple machine is one that conserves forces because every input force is useful or not lost to friction and it is considered as a perfect or ideal system.

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Answer:

Since the second quadrant ends at 180 deg,

205 will be 25 deg into the third quadrant (-x and -y)

y = -.888 sin 25 = -.375

One can also write y = .888 sin 205 = -.375

Explanation:

for part A:

work done is equal to change in potential energy which is

MgH

so the answer is 1.9 × 1 × 9.81

ANSWER FOR PART A: 18.639

FOR PART B:

power = flow rate x gh

= 5×9.81×1.9

93.195 watts

Energy in 1 is Chemical energy, 2 is Thermal energy, 3 is electrical energy the correct answer is option B that is, Chemical, thermal and electrical energy.

Energy is the ability to do work.

The conservation of energy state that energy can neither be created nor be distroyed but can be transformed from one form to the other.

According to the question,

CASE 1

The furnance makes use of burning coal to process water to steam in a boiler. The energy involved is Chemical energy.

CASE 2

The steam produce by the boiler is used to power the rotation of the turbine. The energy involved is Thermal energy.

CASE 3

The rotation of the turbine helps the generator to produce electricity. The  energy involved is electrical energy.

Therefore, the correct answer is option B that is, Chemical, thermal and electrical energy.

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Answer:

the process of bending of light when travling throw different mediume is called refraction of light.

(a) The force the ground exerts on each set of rear wheels when the plane is at rest on the runway is 0.743 MN.

(b) The force the ground exerts on the front set of wheels is 0.239 MN.

The concept of center mass of an object can be used to dtermine the mass distribution of the airplane along the line through the center.

Position of the center mass of the plane is calculated as follows;

Let the position of the center mass, Xcm = y

the center mass is 3 m in front of rear wheels, that is

21.7 - y = 3

y = 21.7 - 3

y = 18.7 m

Xcm = 18.7 m

Let the mass of the plane at front wheels = M1

Let the mass of the plane at rear wheels = M2

[tex]X_{cm} = \frac{M_1x_1 + M_2x_2}{M_1 + M_2}[/tex]

[tex]18.7 = \frac{M_1(0) + M_2(21.7)}{177000} \\\\3,309,900 = 21.7M_2\\\\M_2 = \frac{3,309,900}{21.7} \\\\M_2 = 152,529.95 \ kg[/tex]

There are two rear wheels, and the force exerted on each wheel due to mass of the airplane at this position is calculated as follows;

[tex]W = mg\\\\W_1 = W_2 = \frac{1}{2} (mg) = \frac{1}{2} (152,529.95 \times 9.8) = 743,396.76 \ N= 0.743 \ MN[/tex]

M1 + M2 = 177,000

M1 = 177,000 - M2

M1 = 177,000 - 152,529.95

M1 = 24,470.05 kg

W = mg

W = 24,470.05 x 9.8

W = 239,806.5 N = 0.239 MN

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