3 years ago

Find the mass of a football player who weighs 1250 n.

1 answer:

7 0

We know, W = m * g
1250 = m * 9.8
m = 1250 / 9.8
m = 127.55 KG

In short, Your Answer would be 127.55 Kg

Hope this helps!

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Suppose you increase your walking speed from 5 m/s to 14 m/s in a period of 3 s. What is your acceleration

kirza4 [7]

5-14 m/s in 3 seconds
a=vf-vi/t
a=14-5/3
a=9/3
a=3 m/s^2

4 0

3 years ago

Written:

zmey [24]

Answer:

0.833

Explanation:

Power = energy / time

Power = force × distance / time

Power = force × velocity

P = (850 kg) (9.8 m/s²) (1.00 m/s)

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P = 8.33 kW

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e = 8.33 kW / 10.0 kW

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2 years ago

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AveGali [126]

Answer:

$\lambda=1.03\times 10^{-3}\ m$

Explanation:

Given that,

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We need to find the wavelength of these photons.

$1.2\times 10^{-3}\ eV=1.2\times 10^{-3}\times 1.6\times 10^{-19}\\\\=1.92\times 10^{-22}\ J$

The energy of a wave is given by :

$E=\dfrac{hc}{\lambda}\\\\\lambda=\dfrac{hc}{E}$

Put all the values,

$\lambda=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{1.92\times 10^{-22}}\\\\\lambda=1.03\times 10^{-3}\ m$

So, the wavelength of these photon is $1.03\times 10^{-3}\ m$ .

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3 years ago

An object is held at rest and allowed to drop How far does the object fall in 3.3 seconds?

IgorC [24]

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it will fal 53.361 meters

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3 years ago

State whether the following statement are true or false .

Klio2033 [76]

1. It’s true
4 ,7 ,8 is correct

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2 years ago