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3 years ago

What are some uses of the electromagnetic

1 answer:

8 0

If you mean electromagnetic waves
Radio waves can be used well in radio signals
Infrared in remote controls
X rays for x-rays
Gamma rays in a nuclear power plant
Uv rays can cause cancer but they transmit vitamin D

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- A ball is thrown at a wall 50 meters away. It takes the ball 5 seconds to get to

zimovet [89]

Answer:

<h3>The answer is 10 m/s</h3>

Explanation:

The average speed of the ball can be found by using the formula

$v = \frac{d}{t} \\$

d is the distance

t is the time taken

From the question we have

$v = \frac{50}{5} \\$

We have the final answer as

Hope this helps you

7 0

2 years ago

When grip strength increases:

Nitella [24]

Answer:

e. the number of active motor units increases.

Explanation:

There is a direct relationship between the number of active motor units and the grip strength in a given scenario. <em>For example, increase in the grip strength leads to increase in the number of active motor units. In the other-hand, the decrease in grip strength leads to the decrease in the number of active motor units.</em>

5 0

2 years ago

How are kyanite crystals formed

aev [14]

It occurs as detrital grains in sedimentary rocks. It forms under extreme pressure.

3 0

2 years ago

A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectivel

faust18 [17]

Answer:

The time is 5.10 sec.

Explanation:

Given that,

Component of velocity are 30 m/s and 40 m/s.

We need to calculate the resultant velocity

Using formula of resultant velocity

$v=\sqrt{v_{x}^2+v_{y}^2}$

Put the value into the formula

$v=\sqrt{(30)^2+(40)^2}$

$v=50\ m/s$ [

We need to calculate the time

Using equation of motion

$v = u+gt$

$v = 0+gt$

$t=\dfrac{v}{g}$

Put the value into the formula

$t=\dfrac{50}{9.8}$

$t=5.10\ sec$

Hence, The time is 5.10 sec.

7 0

2 years ago

The wavelength of a light wave will affect the light’s

Degger [83]

The answer is a because
<span>27down voteacceptedFor almost all detectors, it is actually the energy of the photon that is the attribute that is detected and the energy is not changed by a refractive medium. So the "color" is unchanged by the medium...</span>

8 0

2 years ago

Read 2 more answers