Answer: The speed of the moon's rotation keeps the same side always facing Earth.
Explanation: Please mark me brainiest
In a nuclear power plant, energy is released from the nuclei of atoms. The correct option among all the options given in the question is the first option. Huge amount of thermal energy is released by the breaking of the uranium atoms. This energy is used for turning a turbine that produces electricity. It is a very clean method of producing electricity.
Answer:
1 mm^3 = 1.0 x 10^-9 m³
Hence;
5.23 x 10^-6 kg/mm^-3 = (5.23 x 10^-6 kg)/ 1x10^-9 m³
= 5230 kg/m³
Answer:
Explanation:
F = G*m1 * m2 / r^2
G = 6.67408 × 10-11 m3 kg-1 s-2
r = 15 m
F = 4.60 * 10^-6 N
m1 = m2 = m
F = 6.67 * 10^-11 * m^2 / 15^2
4.60 * 10^-6 = 6.67 * 10^-11 * m^2 / 225 Multiply both sides by 225
4.60*10^-6 * 225 = 6.67*10^-11 * m^2
.001035 = 6.67408 × 10-11 * m^2 Divide by 6.67408 × 10-11
0.001035/ 6.67408 × 10-11 = m^2
m^2 = 15507755 Take the square root of both sides
m = sqrt(15507755 )
m = 3938 kg
Answer:
487.23 N/m
Explanation:
Given:
mass of metal sphere 'm'= 0.51kg
the spring stretches from 0.12 m to 0.23 m. Therefore,
= 0.12m and
= 0.23m
the speed of the sphere decreases from 6.7 to 3.3 m/s. Therefore,
= 6.7m/s and
=3.3m/s
In order to find spring constant, we apply law of conservation of energy. i.e
The change of the kinetic energy of sphere is equal to the change of potential energy of the spring.
So, Δ
Δ
where,
Δ
1/2 m (
-
)²
Δ
= 1/2 k (
-
)²
1/2 m (
-
)² = 1/2 k (
-
)²
k= m [ (
-
)²/(
-
)²
k= 0.51 [(6.7-3.3)²/ (0.23-0.12)²]
k= 487.23 N/m
Thus, the spring constant of the spring is 487.23 N/m