Which three statements describe electromagnetic waves?

Two identical heavy balls are dropped from the top of the Leaning Tower of Pisa. The second ball is dropped 1 s after the first

Pepsi [2]

As the balls continue to accelerate to the ground, the distance between them before the first ball hits the ground will increase.

<h3>What is acceleration?</h3>

Acceleration is defined as the rate change of velocity with time.

acceleration a = (Δv) / (Δt)

Two identical heavy balls are dropped from the top of the Leaning Tower of Pisa. The second ball is dropped 1 s after the first ball. The first ball start falling 1s earlier than the second ball. Thus, the acceleration for first ball will be greater than the second ball.

Thus, the distance between them before the first ball hits the ground will increase.

Learn more about acceleration.

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3 0

2 years ago

Brainliest if correct Question 10 of 10

11Alexandr11 [23.1K]

Answer:

D thermal energy moves from the marshmallow to your fingers as you touch the marshmallow

Explanation:

Conduction is the movement of thermal energy without the actual movement of the particles of a body. They particles only collide with each other and transfer energy in the process while maintaining their mean positions.

5 0

2 years ago

Read 2 more answers

A race-car drives around a circular track of radius RRR. The race-car speeds around its first lap at linear speed v_iv i v, st

Bond [772]

Answer and Explanation: Centripetal Acceleration is the change in velocity caused by a circular motion. It is calculated as:

$a_{c}=\frac{v^{2}}{r}$

v is linear speed

r is radius of the curve the object in traveling along

For its first lap:

$a_{c}_{1}=\frac{v_{i}^{2}}{R}$

After a while:

$a_{c}_{2}=\frac{(4v_{i})^{2}}{R}$

$a_{c}_{2}=\frac{16v_{i}^{2}}{R}$

Comparing accelerations:

$\frac{a_{c}_{2}}{a_{c}_{1}}=\frac{16.v_{i}^{2}}{R}.\frac{R}{v_{i}^{2}}$

$\frac{a_{c}_{2}}{a_{c}_{1}}=16$

$a_{c}_{2}=16a_{c}_{1}$

With linear speed 4 times faster, centripetal acceleration is 16 times greater.

4 0

3 years ago

How is the bike in the picture a system and how is the Earth a system?

JulijaS [17]

Answer:

The earth is a vast, complex system powered by two sources of energy: an internal source (the decay of radioactive elements in the geosphere, which generates geothermal heat) and an external source (the solar radiation received from the Sun); the vast majority of the energy in the earth system comes from the Sun.

Explanation:

becuse

4 0

3 years ago

What is the SI unit of measurement for speed? A.meters per second (m/s) B.meters per second (m/s) C.Miles per hour (mi/hr) D.Mil

Ipatiy [6.2K]

Explanation:

The SI unit of measurement for speed is metres per second (m/s) .

Speed : The distance travelled by a body per unit time is know as speed.

Hope it will help.

6 0

3 years ago