The gravitational potential energy of the brick is 25.6 J
Explanation:
The gravitational potential energy of an object is the energy possessed by the object due to its position in a gravitational field.
Near the surface of a planet, the gravitational potential energy is given by
where
m is the mass of the object
g is the strength of the gravitational field
h is the height of the object relative to the ground
For the brick in this problem, we have:
m = 8 kg is its mass
g = 1.6 N/kg is the strenght of the gravitational field on the moon
h = 2 m is the height above the ground
Substituting, we find:
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<span>when two hydrogen atoms approach each other the potential energy of the combination becomes lower and lower until it reaches a minimum value of -436 kl/mol at a distance of 75 pm</span>
<u>Answer:</u> The steel wire will stretch up to 1837.5 mm
<u>Explanation:</u>
We are given:
Mass = 25 kg
Length of wire = 10 m
Area of cross-section of wire = 
(Conversion factor: 
)
To calculate the change in stretching, we use the equation:
where,
E = young modulus of steel = 
F = force exerted by the weight = m g = 
l = length of wire = 10 m
A = area of cross section = 
= change in length = ?
Putting values in above equation, we get:
Converting above value in mili meters, we use the conversion factor:
1 m = 1000 mm
So, 1.8375 m = 1837.5 mm
Hence, the steel wire will stretch up to 1837.5 mm
