A elephant kicks a 5.0\,\text {kg}5.0kg5, point, 0, start text, k, g, end text stone with 150\,\text J150J150, start text, J, en
S_A_V [24]
The speed of the stone is 7.7 m/s
Explanation:
The kinetic energy of a body is the energy possessed by the body due to its motion. Mathematically,

where
m is the mass of the body
v is its speed
For the stone in this problem, we have:
K = 150 J is its kinetic energy
m = 5.0 kg is its mass
Re-arranging the equation for v, we find the speed of the stone:

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The ideal gas law.
PV=nRT
P=presure
V=volume
n=number of moles
R=Gas costant
T=temperature.
Answer: a. Number of moles.
Complete Question
The complete question is shown on the first uploaded image
Answer:
Explanation:
From the question we are told
The amplitude of the lateral force is 
The frequency is 
The mass of the bridge per unit length is 
The length of the central span is 
The oscillation amplitude of the section considered at the time considered is 
The time taken for the undriven oscillation to decay to
of its original value is t = 6T
Generally the mass of the section considered is mathematically represented as

=> 
=> 
Generally the oscillation amplitude of the section after a time period t is mathematically represented as

Here b is the damping constant and the
is the amplitude of the section when it was undriven
So from the question

=> 
=> 
=> 
=> 
Generally the amplitude of the section considered is mathematically represented as

=> 
=> 
=> 
=> 
Answer:
I think its the Blue wave, im not sure so dont take my word for it.
Explanation:
Answer:
3300J
Explanation:
Work done is the energy that is lost by the skater
Formula for workdone = 1/2*mV^2
m = 66kg
V = 10m/s
Work done = 1/2 * 66 * 10^2
= 3300J