Answer:
C)
Explanation:
The buoyancy and weight of the wood have to be equal for the system to be in equilibrium. The total mass (then, weight) of the wood is the same, so the total buoyancy has to be the same. Since buoyancy is the weight of the liquid displaced, the volume of liquid displaced will be the same in either case, which means that the water level will remain unchanged.
Answer:
65
Explanation:
as i = r , so i + i = 130
so , i = 130/2 =65
Answer:
The center of mass can be calculated by taking the masses you are trying to find the center of mass between and multiplying them by their positions
Answer:
300J
Explanation:
Work done = Force x the distance travelled in the direction of the force
=300 x 1
=300J
Answer:
total kinetic energy is 8 ×
J
Explanation:
given data
potential difference = 5 V
e = 1.60 ×
C
to find out
what is kinetic energy
solution
we will apply here conservation of energy that is
change in potential energy is equal to change in kinetic energy
so
change potential energy is e × potential difference
change potential energy = 1.60 ×
× 5
change potential energy = 8 ×
J
so change in kinetic energy = 8 ×
J
and we know proton start from rest that mean ( kinetic energy is 0 ) so
change in KE is total KE
total kinetic energy is 8 ×
J