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3 years ago

The acceleration due to gravity on Earth is 9.80 m/s2. An African elephant can have a mass up to 6,050 kg. What is its weight?

1 answer:

3 0

The weight on earth is equal to m*g, where m is the mass and g is the gravitational force. 6050 (m) * 9.8 (g) = 59290 Newtons.

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A child pushes a toy box across the floor in 5 seconds. If he did 30 J of work on the toy box, what amount of power was required

s2008m [1.1K]

My answer is 6 watts because 30J/5s is 6

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3 years ago

Read 2 more answers

A car rolls backward from -2 to -10 m/s in 4 seconds. what is the acceleration. PLEASE HELP WILL GIVE BRAINLIEST

pashok25 [27]

$\bf \underline{Given : }$

Initial velocity,u = -2 m/s

Final velocity,v = -10 m/s

Time taken, t = 4 seconds

$\bf \underline{To \: find \: out : }$

Find the acceleration ( a ) .

$\bf \underline{Solution : }$

We know that,

$\sf \: Acceleration = \dfrac{v - u}{t}$

Substituting the values in the above formula, we get

$\implies \sf \: Acceleration = \dfrac{ - 10 - ( - 2)}{4}$

$\implies\sf \: Acceleration = \dfrac{ - 10 + 2}{4}$

$\implies \sf \: Acceleration = \cancel \dfrac{ - 8}{4}$

$\implies\sf \: Acceleration = - 2 \: ms {}^{ - 2}$

Hence,the acceleration of a body is -2 m/s².

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4 years ago

Electron can only lose energy by transition from one allowed orbit to another ______ electromagnetic radiation

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Explanation:

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3 years ago

How much force can a 2.5 kg sledge hammer excerpt on a nail if you can swing the hammer at 20 m/s and the hammer contacts the na

AleksAgata [21]

Answer:

625 N

Explanation:

The impulse given to the nail is equal to the change in momentum of the hammer:

$I=F \Delta t=m \Delta v$

where

F is the force exerted by the hammer

$\Delta t=0.08 s$ is the time of contact

$m=2.5 kg$ is the mass

$\Delta v=20 m/s$ is the change in velocity of the hammer

Substituting the data and re-arranging the equation, we can find the force:

$F=\frac{m \Delta v}{\Delta t}=\frac{(2.5 kg)(20 m/s)}{0.08 s}=625 N$

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4 years ago

Apakah itu hukum hooke.....can i knw detail n simple?

butalik [34]

Hooke's law is stated as: F = -kx

Where:

F = Force to compress or extend a spring (unit N)
k = Spring constant
x = displacement of spring

Or to help you in your native language:

F = adalah gaya
k = adalah konstante pegas
x = adalah jarak pergerakan pegas dari posisi normalnya

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3 years ago