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A race car is about to pass a curve road with a diameter of 450m at a constant speed of 22.5m/s. What is the centripetal acceleration of the race car?
A positive charge Q=8 mC is placed inside the cavity of a neutral spherical conducting shell with an inner radius a and an outer radius b. Find the charges induced at the inner and outer surfaces of the shell.
FIGURE 1 shows two long parallel wires 2 cm apart. Wire P carries a current 7 A to
the right. Point C is 3 cm from wire Q and in the same plane as wire P and Q.
Determine the magnitude and direction of current in wire Q so that the magnetic field
at C is zero.
A bullet is fired vertically upward with an initial velocity of 98m/s from the top of a building 100m high. Find,
a) the maximum height reached above the ground
b) the total time before reaching the ground
c) the velocity on landing
A body of mass 0.2kg is executing shmwith an amplitude of 2pcm. The maximum force which acts upon it is 0.064N. Calculate it's maximum velocity and period of oscillation.
an object moving in simple harmonic motion has an amplitude of 0.02m and a frequency of 20hz. find the acceleration and velocity
An object moving in simple harmonic motion has an amplitude of 0.02m and a frequency of 20hz. Find the period of oscillation.
1. Calculate the drift velocity of the electrons in a 12-gauge copper wire which has a diameter of 2. 5 mm carrying an 18.0 A , given that there is one free electron per copper atom. The density of copper is 8.80x103 kg/m3.
atomic mass of copper = 63.54 g/mol; Avogadros number = 6.02 x 10 23 atoms/mol
2. Calculate the total DC resistance of a 100 meter roll of 2.0mm2 copper wire if the resistivity of copper at 200 C is 1.72 x 10-8 ohm meter.
An object of mass 4kg moves round a circle of radius 6m with a constant speed of 12m/s. Calculate the force towards the center.
An object of mass 4kg moves round a circle of radius 6m with a constant speed of 12m/s. Calculate the angular speed.
#340153 on Dec 2023