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dangina [55]
3 years ago
9

39. What is the change in momentum for a 5,000 kg ship in

Physics
1 answer:
Ivan3 years ago
6 0

Answer:

Change in momentum is zero.

Explanation:

The following data were obtained from the question:

Mass (m) = 5000 kg

Time (t) = 1 h

Net force (F) = 0

Change in momentum =?

Force = Rate of change of momentum

0 = change in momentum

Change in momentum = 0

We can see from the above illustration that the net force is zero. Thus, the change in momentum is also zero.

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<span>Its the impact theory.
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3 0
3 years ago
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Estimate the wavelength of electrons that have been accelerated from rest through a potential difference of 60 kV.
ivolga24 [154]

Answer: 2.068*10^{-14}m

Explanation: According to work energy-theorem , the workdone in accelerating the electron equals the energy it would give off in terms of light.

workdone= qV

energy = hc/λ

q=magnitude of an electronic charge= 1.602*10^{-16}

h= planck constant = 6.626*10^{-34}

c= speed of light =2.998* 10^{8}

v= potential difference= 6*10^{4}

λ= wavelength=unknown

by making λ subject of formulae we have that

λ= \frac{hc}{qv}

λ = 6.626*10^{-34} * 2.998* 10^{8} / 1.602*10^{-16} * 6*10^{4}

λ = \frac{19.878*10^{-26} }{9.612*10^{-12} }

by doing the necessary calculations, we have that

λ = 2.068*10^{-14}m

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3 years ago
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Vadim26 [7]
Both waves would increase right? That seems correct since the water and air temp both equally changed.
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When did dalton form his atomic theory?
elena55 [62]
Sometime in the 1800s
7 0
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Air resistance is a nonconservative force. It always opposes the motion of an object. An airplane flies from New York to Atlanta
Lorico [155]

Answer:

is always negative

Explanation:

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