Answer: The tidal forces exerted by the moon are directly associated with the earth's rotation. Due to the strong gravitational pull of the moon, the tidal bulging appears on both the sides on earth and these are region of high tide, and there is gradual rise and fall of sea level.
Because of these tidal effect, the earth is able to rotate only once in each of the orbital period.
Answer:
r = 5.94 10⁻² m
Explanation:
The magnetic force is given by the ratio
F =q v x B
The bold indicate vectors and the vector product determines that the force is perpendicular to the other two vectors, so the modulus of the velocity does not change, but its direction, therefore the acceleration in Newton's second law is centripetal
F = m a
The magnitude of the force is
F = q v B sin θ
The centripetal acceleration is
a = v² / r
Let's replace
q v B sin θ = m v² / r
r = m v / (q B sin θ)
Let's calculate
r = 9.11 10⁻³¹ 4.8 10⁶ / (1.60 10⁻¹⁹ 9.2 10⁻⁴ sin 30)
r = 5.94 10⁻² m
Answer:
Explanation:
Given:
Workdone by the system, Win = 580 J
Workdone consumed, W = 150 J
Heat loss, Wout = Win - W
= 580 - 150
= 430 J
Heat lost by the coils of the refrigerator to the kitchen = 430 J.
1) find speed (8.8 m/s)
2) find acceleration (38.7 m/s^2)
answer is about 38.7 m/s^2
Answer:
6.49 x 10^-8 N
Explanation:
formula is
F= G * ((m1 * m2)/r^2)
F = 6.67x10^-11 * ((6.8*6.8/.218)
F = 6.49 x 10^-8 Newtons
