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sergejj [24]
3 years ago
5

Summarise the video the best Newton's laws video ever.

Physics
1 answer:
Minchanka [31]3 years ago
5 0

There is no video provided.

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A balloon is at a height of 81m and is ascending upwards with a velocity of 12m/s. A body of 2kg weight is dropped from it. If g
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I know you are Indian by your question, HC Verma class 9 or 11 !!

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7 0
4 years ago
Find the velocity, acceleration, and speed of a particle with the given position function. r(t) = t i + t2 j + 3 k v(t) = a(t) =
stepladder [879]

Answer:

Velocity

v= i + 2  j

Acceleration

a= 2 j

Explanation:

Given that

r(t) = t i + t² j + 3 k

We know that

Velocity v given as

v= dr/dt

dr/dt= i + 2 t j +0

v= i + 2 t j

At t= 1

v= i + 2 x 1 j

v= i + 2  j

Acceleration ,a

a=  dv/dt

v= i + 2 t j

dv/dt= 2 j

a= 2 j

6 0
3 years ago
An elementary particle of mass m completely absorbs a photon, after which its mass is 1.01m. (a) what was the energy of the inco
sdas [7]
A.) We use the famous equation proposed by Albert Einstein written below:

E = Δmc²
where
E is the energy of the photon
Δm is the mass defect, or the difference of the mass before and after the reaction
c is the speed of light equal to 3×10⁸ m/s

Substituting the value:

E = (1.01m - m)*(3×10⁸ m/s) = 0.01mc² = 3×10⁶ Joules

b) The actual energy may be even greater than 3×10⁶ Joules because some of the energy may have been dissipated. Not all of the energy will be absorbed by the photon. Some energy would be dissipated to the surroundings.
8 0
3 years ago
Define one metre length​
Tresset [83]

Answer:

The metre is currently defined as the length of the path travelled by light in a vacuum in 1299 792 458 of a second. The metre was originally defined in 1793 as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth's circumference is approximately 40000 km

3 0
3 years ago
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When the atmosphere is absolutely unstable?
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When <span>the environmental lapse rate is greater than 9.8 C per kilometer.</span>
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4 years ago
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