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Black_prince [1.1K]
2 years ago
9

A rock from the top of a hill is falling from rest.

Physics
1 answer:
dsp732 years ago
3 0

Object name:- <u>R</u><u>o</u><u>c</u><u>k</u>

Starting energy:- <u>K</u><u>i</u><u>n</u><u>e</u><u>t</u><u>i</u><u>c</u><u> </u><u>e</u><u>n</u><u>e</u><u>r</u><u>g</u><u>y</u>

Conversion:- <u>Potential</u><u> </u><u>to</u><u> </u><u>kinetic</u><u> </u><u>energy</u>

Final energy form:- <u>P</u><u>o</u><u>t</u><u>e</u><u>n</u><u>t</u><u>i</u><u>a</u><u>l</u><u> </u><u>e</u><u>n</u><u>e</u><u>r</u><u>g</u><u>y</u>

Non usable form if energy:- <u>N</u><u>i</u><u>l</u><u> </u> [ As it has potential & kinetic both]

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Black_prince [1.1K]
I think frequency it sounds like the correct answer but I am not completely sure if I am correct
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How many minutes are in 2 1<br>4 hours?​
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If you are meaning to say 214 the answer is 12840 minutes

Explanation:

5 0
3 years ago
Can someone please help meee .
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Which type of wave has a longer wavelength: AM radio waves (with frequencies in the kilohertz range) or FM radio waves (with fre
faltersainse [42]

Answer:

AM has longer wavelength

Explanation:

The relation between the wavelength and teh frequency is given by

v = f x λ

Where, f is the frequency and λ be the wavelength.

It shows that the wavelength is inversely proportional to the frequency.

So, higher the frequency, smaller be the wavelength.

So, FM has high frequency than AM, thus, FM has lower wavelength as compared to AM.

6 0
3 years ago
Ask Your Teacher Cam Newton of the Carolina Panthers throws a perfect football spiral at 6.9 rev/s. The radius of a pro football
faltersainse [42]

Answer:

a=159.32\ m/s^2

Explanation:

It is given that,

Angular speed of the football spiral, \omega=6.9\ rev/s=43.35\ rad/s

Radius of a pro football, r = 8.5 cm = 0.085 m

The velocity is given by :

v=r\omega

v=0.085\times 43.35

v = 3.68 m/s

The centripetal acceleration is given by :

a=\dfrac{v^2}{r}

a=\dfrac{(3.68)^2}{0.085}

a=159.32\ m/s^2

So, the centripetal acceleration of the laces on the football is 159.32\ m/s^2. Hence, this is the required solution.

6 0
3 years ago
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