Answer:
The separation between the two point charges is decreased by a factor of .
Explanation:
By Coulomb's Law, the electric force () is inversely proportional to the square of separation (), that is:
(1)
If we know that , then the factor associated with separation between point charges is:
The separation between the two point charges is decreased by a factor of .
Answer:
Explanation:
Given ; P1 = 100 kPa, T1 = 30°C, T2 = 90°C, P2 = 200 kPa, V1 = 350 m/s
From energy conservation at inlet and outlet
h1 + (1/2)v1² = h2 + (1/2)v2²
CpT1 + (1/2)v1² = CpT2 + (1/2)v2²
.718(90-30) x 103= 0.5x (350²-v2²)
velocity at the exit of a diffuser ; V2=190.63m/s
Answer:
Explanation:
N = 65
Area, A = 0.1 x 0.2 = 0.02 m^2
R = 10 ohm
ω = 29.5 rad/s
B = 1 T
(a) at t = 0
e = N x B x A x ω
e = 65 x 1 x 0.02 x 29.5
e = 38.35 V
(b) The maximum rate of change of magnetic flux is equal to the maximum value of induced emf.
Ф = 38.35 Wb/s
(c) e = NBAω Sinωt
e = 65 x 1 x 0.02 x 29.5 x Sin (29.5 x 0.05)
e = 38.174 V
(d) Maximum torque
τ = M B Sin 90
τ = N i A B
τ = N e A B / R
τ = 65 x 38.35 x 0.02 x 1 / 10
τ = 5 Nm
Answer:
B. The force increases because it is part of Newton’s third law pair of forces with the force that the star exerts on the planet.
Explanation:
According to the universal law of gravitation, the force between the two objects is,
From the equation, it is clear that when the magnitude of the distance between the two bodies decreases, the magnitude of the force increases.
According to newton's third law of motion, the force acting on the body is always equal to its recreational force in the opposite direction.
Hence, the force increases because it is part of Newton’s third law pair of forces with the force that the star exerts on the planet.
a) Change in Kinetic energy = Work Done
We require Normal Force N,
N + 188 X sin(28.6 ) - m x g = 0
so N = m x g - 188 x sin(28.6)
= 19.7 Kg x 9.8m/s^2 - 188 x sin(28.6)
= 19.7 Kg x 9.8m/s^2 - 188 x 0.478
= 193.06 Kg.m/s^2 - 89.864 N
= 103.196 N
Wvertical = F*x = μ X 103.196 x 48.7 = 0.103 X 103.196 x 48.7
= 517.641 N
Whorizontal = F*x = F x cos(28.6 ) x 48.7
= 188 x cos(28.6 ) x 48.7
= 188 x 0.877 x 48.7
= 8029.46 J
b) V^2 = U^2 + 2 x a x s
V = (2 x a x s)^0.5
= 13.486 m/s