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It is pulled a little away from its resting position and when released oscillates freely about O. What is the period of the oscillation?
At what minimum period should it be rotating so when the mass is 1 m from the center friction will not hold it in place?
In the movie, 2001 : spaceodyssy, gravity is simulated in a cylindrical space station, radius 100 m by rotating at what speed(rad/s)? We measure the effective gravity right on the inner surface of t
A plastic rod that has been charged to -15.0 nC touches a metal sphere. Afterward, the rod's charge is -10.0 nC. What kind of charged particle was transferred between the rod and the sphere?
An object is placed in front of a converging lens in such a position that the lens (f = 11.0 cm) produces a real image located 19.9 cm from the lens. Then, with the object remaining in place, the le
The distance between an object and its image formed by a diverging lens is 8.70 cm. The focal length of the lens is -4.00 cm. Find (a) the image distance and (b) the object distance.
Two slits separated by 0.489 mm are illuminated with light of an unknown wavelength and an interference pattern is observed on a screen5.51 m away. The tenth bright line is 86.5 mm from the central
The engine of a small aircraft (m = 1400 kg including pilot) develops 180 hp. The airplane's speed is increased from 30 m/s to 45 m/s while it climbs from ground level to a height of 500 m in a tim
A mass m, is released from rest at a height, 4R and then travels along a frictionless track through a circular loop. The loop has a radius R. What is the normal force on the mass when it passes thro
At the bottom of the incline a horizontal surface has a coefficient of friction given by 0.33 and is 2.10 m long. Note: For full credit use work-energy principles to compute the following: (a) What
The spring constant is 25 N/cm for the spring. A 2.0 kg mass is pressed against the spring and then released and the entire system is placed on horizontal frictionless surface. (a) How much is the s
What is the maximum speed of the mass? What is the time when for the first time the length of the spring is 2.01.
A straight wire 20 cm long, carrying a current of 4 A, is in a uniform magnetic field of 0.6 T. What is the force on the wire when it is at an angle of 30° with respect to the field?
Air restistance is negligable. If the collision is completely inelastic,What is the total kinetic energy of the system after the collision?
Find an expression for the distance D that it lands from the base of the cliff.
In the lab, hydrogen atoms with n approximatly = 100 have been produced. What must be the pressure in these experiments?
What is the wavelength of the photon emitted when the electron makes a transisiton from n = 2 to n = 1?
A 5.0 V battery is connected to two parallel metal plates placed in a vacuum. An electron is accelerated from rest from the negative plate toward the positive plate. What kinetic energy does the ele
Three point charges, q1=2.0 uc, q2=2.0 uc, & q3= -1.0 uc, are located at the vertices of an equilateral triangle of side length 30 cm. What is the potential energy of this arrangement?
Do the same exercise as above with the replacement of the earlier transformer by a 40,000-220 V step-down transformer (Neglect, as before, leakage losses though this may not be a good assumption any
At a hydroelectric power plant, the water pressure head is at a height of 300 m and the water flow available is 100 m3 s-1. If the turbine generator efficiency is 60%, estimate the electric power avai
A power transmission line feeds input power at 2300 V to a stepdown transformer with its primary windings having 4000 turns. What should be the number of turns in the secondary in order to get outpu
In any ac circuit, is the applied instantaneous voltage equal to the algebraic sum of the instantaneous voltages across the series elements of the circuit? Is the same true for rms voltage?
What is the source frequency for which current amplitude is maximum. Obtain this maximum value.