The weight of object with a mass of 8 kg is 78.4 N.
The weight of object with a mass of 0.04 kg is 0.392 N.
The weight of object with a mass of 760 mg is 7.45 N.
<h3>What is weight?</h3>
The weight of an object is the force acting on the object due to gravity.
Weight, W = mg
where;
- m is the mass of the object
- g is acceleration due to gravity, 9.8 m/s²
<h3>Weight of object with a mass of 8 kg</h3>
W = mg
W = 8 kg x 9.8 m/s²
W = 78.4 N
<h3>Weight of object with a mass of 0.04 kg</h3>
W = mg
W = 0.04 kg x 9.8 m/s²
W = 0.392 N
<h3>Weight of object with a mass of 760 mg</h3>
W = mg
W = 0.76 kg x 9.8 m/s²
W = 7.45 N
Thus, the weight of object with a mass of 8 kg is 78.4 N.
The weight of object with a mass of 0.04 kg is 0.392 N.
The weight of object with a mass of 760 mg is 7.45 N.
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Electrical currents are steady. Static electricity is periodic and only lasts so long.
Answer:Hollow sphere
Explanation:
Given
same mass for solid and hollow sphere
same
before they start up incline
Moment of inertia of solid Sphere

Moment of inertia of hollow sphere

Conserving Energy at bottom and top point for solid sphere
kinetic energy +Rotational Energy=Potential energy

for pure rolling 



For hollow sphere


therefore height gained by hollow sphere is more
Wood is an insulator, so the wood doesn’t heat up.
Momentum is defined as
P = m*v
where m is the mass of the object
and v is the speed of the object
We find m.............> m = P/v = 120 [kg.m/s] / 2.4 [m/s] = 50 kg
The mass is 50 kg