3 years ago

What is the definition of power ? what are the units of power?

Physics

1 answer:

Jet001 [13]3 years ago

4 0

Answer:

power is the rate at which energy is transferred or converted

the unit of power is Watts

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I mean this is what I think

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you would need to place a rock on top of each other until you reach the ceiling

It seems logical to me

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3 years ago

15 points! An atomic nucleus initially moving at 420 m/s emits an alpha particle in the direction of its velocity, and the remai

alexandr1967 [171]

The alpha particle is emitted at 4235 m/s

Explanation:

We can use the law of conservation of momentum to solve the problem: the total momentum of the original nucleus must be equal to the total momentum after the alpha particle has been emitted. Therefore:

$p_i = p_f\\ Mu=m_1 v_1 + m_2 v_2 =$

where:

$M =222u$ is the mass of the original nucleus

$v=420 m/s$ is the initial velocity of the nucleus

$m_1 = 4 u$ is the mass of the alpha particle

$v_1$ is the final velocity of the alpha particle

$m_2 = 222u-4u = 218 u$ is the mass of the daughter nucleus

$v_2 = 350 m/s$ is the final velocity of the nucleus

Solving for $v_1$ , we find the final velocity of the alpha particle:

$v_1 = \frac{Mu-m_2 v_2}{m_1}=\frac{(222)(420)-(218)(350)}{4}=4235 m/s$

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3 years ago

A solid non-conducting sphere of radius R carries a charge Q distributed uniformly throughout its volume. At a radius r (r <

Svet_ta [14]

Answer:

Hence the answer is E inside $= KQr_{1} /R^{3}$ .

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E inside $= KQr_{1} /R^{3}$

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E $\begin{bmatrix}Blank Equation\end{bmatrix}$ proportional to 1/R3

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2 years ago

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Cycloheptatriene

Explanation:

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there is a fish called an archer fish that shoots drops of water at insects resting on branches above the water. If the Archer f

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Answer:

=3.5 m/s

Explanation:

y = x tanθ - 1/2 g x² / (u²cos²θ )

y = 0.25 , x = 0.5, θ = 40°

.25 = .50 tan40 - .5 x 9.8x x²/ u²cos²40

.25 = .42 - 2.0875/u²

u = 3.5 m / s.

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3 years ago

What is the definition of power ? what are the units of power?​

What is the definition of power ? what are the units of power?