Answer:
The rise in temperature is 0.06 K.
Explanation:
mass of bullet, m = 15 g
initial speed, u = 865 m/s
final speed, v = 534 m/s
mass of water, M = 13.5 kg
specific heat of water, c = 4200 J/kg K
The change in kinetic energy
According to the conservation of energy, the change in kinetic energy is used to heat the water.
K = m c T
where, T is the rise in temperature.
3473 = 13.5 x 4200 x T
T = 0.06 K
Answer:
A) equal to
In a closed system, the total energy prior to an energy transformation is <u>equal to</u> the total energy after.
Explanation:
A closed system is defined as an isolated region surrounded by a boundary across which no transfer of matter or energy can take place.
Hence, even if there is an energy transformation in a closed system, the overall energy of the closed system remains constant.
Answer: Sorry the pic is too blurry try making the resolution higher
Answer:
Mass will be equal to 5.173 kg
Explanation:
Energy due to rotation of uniform flywheel is E = 5.1 KJ = 5100 J
Angular speed
Radius r = 1.2 m
Rotational kinetic energy of flywheel is
So
Moment of inertia of solid flywheel is
So
So mass will be equal to 5.173 kg
I think the awnser would be that the object with the larger mass will fall faster than the object with less mas but im not sure lol hope this helps