2 years ago

5) A 5 kg watermelon is raised 3 m by carrying it up the stairs to the second

Physics

1 answer:

Nutka1998 [239]2 years ago

3 0

Answer: 150J

Explanation:

m = 5 kg

g = 10 m/s2

h = 3m

P.E = mgh

P.E = 5 x 10 x 3

P.E = 150J

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o-na [289]

Answer:

$f=5.76\times 10^{14}\ Hz$

Explanation:

We need to find the frequency of green light having wavelength o $5.2\times 10^{-7}\ m$ . It can be calculated as follows :

$c=f\lambda\\\\f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{5.2\times 10^{-7}}\\\\f=5.76\times 10^{14}\ Hz$

So, the required frequency of green light is equal to $5.76\times 10^{14}\ Hz$ .

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Find the direction and magnitude of Ftot, the total force exerted on her by the others, given that the magnitudes F1 and F2 are

Mars2501 [29]

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