There are a lot.

Some of them are

Gamma radiation

X-ray radiation

Ultraviolet radiation

Visible radiation

Infrared radiation

Microwave radiation

**Answer:**

C

**Explanation:**

That is where the most heat and light is showing on this diagram.

**Answer:**

0.7864m

**Explanation:**

Ignore air resistance (the ball's horizontal speed stays constant), the time it takes for the ball to travel 1.95 m horizontally at the rate of 4.87 m/s.

t = 1.95 / 4.88 = 0.4s

This is also the time it takes to fall vertically with gravitational acceleration of g = 9.81 m/s2. We can use the following equation of motion to estimate the vertical distance:

The gravity of the Sun keeps the planets in their orbits rotating. The same as the Moon orbits the Earth because of the pull of earth's gravity, the earth orbits the Sun because of the pull of the Sun's gravitational pull.

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The** wavelength** of the emitted photon is()= 690nm

<h3>How can we calculate the wavelength of the emitted photon?</h3>

To calculate** the wavelength** of the photon we are using the formula,

Or,

We are given here,

= The **energy difference** between the two levels = 1. 8 ev= C.

h=** Planck constant** = Js.

c= **speed **of light = m/s.

We have to find the **wavelength** of the emitted photon = m.

Therefore, we substitute the known parameters in the above equation, we can find that,

Or,

Or, m

Or,=690 nm.

From the above calculation we can conclude that the** wavelength** of the emitted photon is 690nm.

Learn more about** ruby laser**:

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