3 years ago

A sound wave in air has a frequency of 987hz and travels at a speed of 96 m/s. What is the wavelength of this wave?

Physics

1 answer:

rjkz [21]3 years ago

8 0

Answer:

0.0972644

Explanation:

Wave length = wave speed / frequency

Wave length = 96 / 987

= 0.0972644

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What is the kinetic energy of a 10-kg bicycle moving at 10 m/s?

Stolb23 [73]

Answer:

Kinetic energy is equals to 0.5mv² where m is the mass in

kilograms and v is the velocity in ms-1

So, for a bicycle of 10kg moving at 10ms-1,

K.E

= 0.5mv²

= 0.5(10)(10²)

= 500 J

Explanation:

3 0

3 years ago

Gas A has molecules with small mass. Gas B has molecules with larger mass. They are at the same temperature.

Julli [10]

Answer:

c)The gases have the same average kinetic energy.

Explanation:

As we know that the kinetic energy of gas is given as

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

here we know that

$v = \sqrt{\frac{3RT}{M}}$

so we have

$K = \frac{1}{2}m (\frac{3RT}{M})$

now we have

$K = \frac{3}{2}n RT$

now mean kinetic energy per molecule is given as

$K_{avg} = \frac{3}{2}KT$

so this is independent of the mass of the gas

so average kinetic energy will remain same for both the gas molecules

6 0

3 years ago

Which is NOT an INHERITED TRAIT?

Tcecarenko [31]

The answer is holes in leaves that were made by insects

6 0

3 years ago

Read 2 more answers

A student observed a sample of water in three states of matter. The student should describe the liquid water as a state of matte

Nadya [2.5K]

Answer:

B. Less volume than a solid state

6 0

3 years ago

The car travels 25 miles in the first 0.5 hours

Westkost [7]

Answer:

$\huge\boxed{\sf v = 50\ miles / hr}$

Explanation:

<u>Given Data:</u>

Distance = S = 25 miles

Time = t = 0.5 hours

<u>Required:</u>

Speed = v = ?

<u>Formula:</u>

v = S/t

<u>Solution:</u>

v = 25 / 0.5

v = 50 miles / hr

$\rule[225]{225}{2}$

Hope this helped!

<h3>~AnonymousHelper1807</h3>

4 0

3 years ago