Answer:
gravitational pull by earth and friction
Explanation:
When the ball is placed on tilted tale it starts rolling because of the force of gravity pulls it downward along the plane of table and frictional force produces torque which generate rotational motion as a result body will start rolling.
Push of the table will be used to generate frictional force f=μ.N
Weathering and rock slides
B
A quantity which does not depend on direction is called a scalar quantity. Vector quantities have two characteristics, a magnitude and a direction. Scalar quantities have only a magnitude. ... The resulting motion of the aircraft in terms of displacement, velocity, and acceleration are also vector quantities.
Answer:
51 mph
Explanation:
Given: A certain aircraft can fly 612 miles with the wind in 3 hours and travel the same distance against the wind in 6 hours.
Formula: 
Let speed of aircraft be x mph and speed of wind y mph
Aircraft along wind:
Actual speed of aircraft = x + y
Time taken = 3 hours
Distance = 612 miles
Aircraft against wind:
Actual speed of aircraft = x - y
Time taken = 6 hours
Distance = 612 miles
By solving equation (1) and equation (2) and we get
x = 153 mph
y = 51 mph
Hence, The speed of wind will be 51 mph
Answer:
F = q v B sin Θ describes force on the electron
F = m v^2 / R describes force required to keep electron in circular path
q v B sin Θ = m v^2 / R
R = m v / (q B sin Θ)
R = 9.1E-31 * 1E7 / (.1 * 1.6E-19 * .423)
R = 9.1 / 6.77 * E-3 = .00134 m = .134 cm
