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2 years ago

Explain how each of the following changes as you travel across the spectrum: wavelength, frequency, and energy

Physics

1 answer:

Wittaler [7]2 years ago

4 0

As you go from Radio waves across to Gamma eats : Wavelength decreases and frequency and energy increase.

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a condenser of capacitor 50 micro coulomb is charged to 10 volt the energy stored is can you do derivation please

Sedbober [7]

Answer:

2.5x10^-3 J

Explanation:

C=50mC

V=10V

U=1/2 C (V)^2

=1/2(50)(10)^2 x (10)^-6

=25(100)/1000000

=2.5x10^-3

8 0

2 years ago

Suppose that the Hubble Space Telescope discovers a series of planets with the following characteristics moving around a star th

nalin [4]

Answer:

Option (D)

Explanation:

Terrestrial planets refers to those four planets that are nearest to the sun and that lies within the asteroid belt. These planets are mainly composed of rocks or other metal objects that have a hard and resistant surface on it. They have a metal core that is molten (liquid) in nature, and atmosphere is relatively less dense, and also various geological features are present on it like the crater, volcanoes which can be observed with the help of satellites. The average densities of these planets is about four times the density of water. For example, the density of water is 1 g/cm³, whereas the density of earth is 5.5 g/cm³.

Thus, the correct answer is option (D).

3 0

2 years ago

Which type of wave is more dangerous for humans? Microwaves or x-rays?

Dvinal [7]

X- rays. It can damage living tissue

3 0

3 years ago

Read 2 more answers

A monochromatic light beam with a quantum energy value of 3.0 ev is incident upon a photocell. the work function of the photocel

otez555 [7]

1.4 ev I'd explain but I gotta roll!

3 0

2 years ago

Read 2 more answers

A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of

Gennadij [26K]

To solve this problem we will apply the concepts related to the electric field such as the smelting of the Force and the load (In this case the force is equivalent to the weight). Later we will apply the ratio of the total charge as a function of the multiplication of the number of electrons and their individual charge.

$E = \frac{mg}{q}$

Here,

m = mass

g = Acceleration due to gravity

Rearranging to find the charge,

$q = \frac{mg}{E}$

Replacing,

$q = \frac{(3.37*10^{-9})(9.8)}{11000}$

$q = 3.002*10^{-12}C$

Since the field is acting upwards the charge on the drop should be negative to balance it in air. The equation to find the number of electrons then is

$q = ne$