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3 years ago

When the sun heats up the suface of the water, the water

Physics

1 answer:

nadya68 [22]3 years ago

5 0

Answer:

In the water cycle, evaporation occurs when sunlight warms the surface of the water. The heat from the sun makes the water molecules move faster and faster, until they move so fast they escape as a gas. Once evaporated, a molecule of water vapor spends about ten days in the air.

Explanation:

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Two sound waves, A and B, are traveling at the same speed. Wave A has a wavelength of 50 cm and a frequency of 7000 Hz. Wave B h

vekshin1

Answer:

D. 100 cm

Explanation:

The speed of a wave is the wavelength times the frequency.

v = λf

Wave A and B have the same speed, so:

λf = λf

(50 cm) (7000 Hz) = λ (3500 Hz)

λ = 100 cm

6 0

3 years ago

A hockey puck has a momentum of 3.8 kg•m/s [E]. If its

agasfer [191]

Answer:

$1.6 \times 10 { }^{ - 1} kg \\$

Explanation:

I hope, it helped you.

4 0

3 years ago

2. Which of the following is NOT a transverse wave?

diamong [38]

Answer:

Sound waves are not transverse wave

7 0

3 years ago

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A ball is thrown vertically upwards with a velocity v and an initial kinetic energy Ek. When half way to the top of its flight,

Mama L [17]

Answer:

Option A

$\frac{V}{\sqrt{2} }$ , $\frac{E}{2}$

Explanation:

When the ball its thrown up, at half way of its flight it means half of its vertical height which is $\frac{h}{2}$ .

potential energy = mgh

since it moved half way of height

P.E = $\frac{mgh}{2}$

This means for the body to have gained half of its P.E, it will loose half of its kinetic energy.

Final kinetic energy( $E_{1}$ ) = E/2

kinetic energy = $\frac{1}{2}mv^{2}$

let the final velocity at halfway flight be v1

$E_{1}$ = E/2

$\frac{1}{2}mv_{1}^{2}$ = $\frac{\frac{1}{2}mv^{2}}{2}$

cross multiply we have

$mv_{1}^{2}$ = $\frac{1}{2}mv^{2}$

cancel m from both sides

$v_{1}^{2}$ = $\frac{1}{2}v^{2}$

take the square root of both sides,

$v_{1} =\sqrt{\frac{v^{2} }{2} }$

$v_{1} =\frac{v}{\sqrt{2} }$

Thus our final velocities will be E/2 and $\frac{v}{\sqrt{2} }$

5 0

3 years ago

Which refers to a diagram that shows thermal energy being released by objects?

liq [111]

Answer:

The correct option is thermogram

Explanation:

A thermogram is an image that is produced by thermographic cameras that are usually used to detect radiation (thermal energy released by a body) within a long-infrared range of electromagnetic spectrum. This process is a part of infrared imaging science which is useful in the diagnosis of breast cancer and some other forms of tumors.

8 0

3 years ago

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