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Q. Explain what is the force felt by the electrons and the nuclei in the rod when the external field described in the problem introduction is applied? (Ignore internal fields in the rod for the moment.)
Q. How many turns of wire would be on a solenoid carrying a current 5.8 A if the solenoid is 13 cm in diameter, 201 cm long, and the field at the center is 2.1 × 10-3 T?
A box of books weighing 334 N is shoved across the floor by a force of 479 N exerted downward at an angle of 33° below the horizontal. What is the maximum coefficient of kinetic friction between the box and the floor that allows the box to move with ..
A helicopter is ascending perpendicularly with a speed of 5.42 m/s. At a height of 146 m above the Earth, a package is dropped from a window. How much time does it take for package to reach the ground.
How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy.
Objective questions based on momentum and force.
A small grinding wheel has a moment of inertia of 4.0×10-5 kg m^2. What net torque must be applied to the wheel for its angular acceleration to be 160 rad s^2.
The alpha line in the Balmer series of the hydrogen spectrum consists of light having a wavelength of 6.56 ×10-7 meter. Compute the frequency of this light.
Suppose a small boat is at the crest of this wave, 1.5 {rm m} above the equilibrium position. Illustrate what will the vertical position of the boat be 5 seconds later?
What is the magnitude of the runner's total displacement . What is the phase difference between the two waves next they reach the observer.
When released, the textbook slides on a horizontal tabletop with coefficient of kinetic friction k = 0.30. Use the work-energy theorem to find out how far the textbook moves from its initial position before coming to rest.
What is the friction force that acts on the bear?
An orienter runs the following course: 100 m at 35 degrees, 150 m at 220 degrees, and 50 meters at 170 degrees. find the resultant displacement.
Two charges are placed on the x axis. One of the charges (q1 = +6.95C) is at x1 = +3.00 cm and the other (q2 = -27.3C) is at x2 = +9.00 cm. Find out the net electric field (magnitude and direction given as a plus or minus sign) at (a) x = 0 cm and (b..
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