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3 years ago

9. Studying earthquake waves, density experiments, and observations of meteorites are ways that we study the

Physics

1 answer:

Svet_ta [14]3 years ago

5 0

The answer is A. Circumstantial

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What is the mass of a cannonball if a force of 2,500 N gives the cannonball an acceleration of 200m/s2?

pentagon [3]

Newton's 2nd law of motion:

   Force = (mass) x (acceleration)

Divide each side
by 'acceleration': Mass = (force) / (acceleration)

   = (2,500 N) / (200 m/s²)

   = 12.5 kg

8 0

4 years ago

Read 2 more answers

The vibrations along a transverse wave move in a direction _________.

GrogVix [38]

Answer: perpendicular to it oscillations.

Explanation: A transverse wave is a wave whose oscillations is perpendicular to the direction of the wave.

By perpendicular, we mean that the wave is oscillating on the vertical axis (y) of a Cartesian plane and the vibration is along the horizontal axis (x) of the plane.

Examples of transverse waves includes wave in a string, water wave and light.

Let us take a wave in a string for example, you tie one end of a string to a fixed point and the other end is free with you holding it.

If you move the rope vertically ( that's up and down) you will notice a kind of wave traveling away from you ( horizontally) to the fixed point.

Since the oscillations is perpendicular to the direction of wave, it is a transverse wave

5 0

3 years ago

Where could light travel the easiest and fastest?

madreJ [45]

Explanation:

Light travels fastest through air

3 0

3 years ago

Read 2 more answers

The motor winds in the cable with a constant acceleration, such that the 20-kg crate moves a distance s = 6 m in 3 s, starting f

Marta_Voda [28]

Answer:

85 N

Explanation:

Given that crate mass = 20kg

Distance = 6m

Time = 3 seconds

Coefficient of kinetic friction = 0.3

We begin by calculating for acceleration

Which was gotten as 1.33 m/s sq

SEE THE ATTACHEMENT FOR DETAILS

8 0

3 years ago

A proton and an electron are released from rest in the center of a capacitor.

Sunny_sXe [5.5K]

Answer:

a) equal 1, b) less than 1

Explanation:

a) the electric force is given by

Fe = q E

The charge of the electron and proton has the same value, that of the proton is positive and that of the electron is negative

Proton

Fp = qE

Electron

Fe = - q E

Fp / Fe = -1

If we do not take into account the sign the relationship is equal to one (1)

b) to calculate the force we use Newton's second law

F = ma

qE = m a

a = q E / m

The mass of the proton much greater than the mass of the electron

ap = q E / $m_{p}$

ae = - q E / $m_{e}$

ap / ae = $m_{e}$ / $m_{p}$ = $m_{e}$ /1600 $m_{e}$ =1/1600

It is much smaller than 1

7 0

3 years ago