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A dipole moment is placed in a uniform electric field oriented along an unknown direction. The maximum torque applied to the dipole is equal to 0.1 N.m. When the dipole reaches equilibrium its potential energy is equal to -0.2 J. What was the initial angle between the direction of the dipole moment and the direction of the electric field?
A car of mass 920.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 41.0 km/hr (11.4 m/s), the net power which the engine supplies is 4300.0 W (in addition to the extra power required to make up for air resista..
An ideal gas at 13.6 °C and a pressure of 1.41 x 105 Pa occupies a volume of 3.90 m3. How many moles of gas are present
A magnifying glass is a single convex lens with a focal length of f = +13.0 cm.
A step down transformer produces a voltage of 5.3 V across the secondary coil when the voltage across the primary coil is 100V. What voltage appears across the primary coil
A model of the stretching vibrations of a polyethylene chain may be made by considering a linear chain of identical masses M connected by springs of alternating force constants C1 and C2. Calculate the characteristic frequencies of such a chain is th..
Suppose a portable electric heater can be modeled by an Ohmic resistor. If the heater requires 600 Watts to operate, calculate the voltage drop across the heater
Calculate the net work done by the force of friction. A 1.50 m-long, 530 g rope pulls a 7.00 kg block of ice across a horizontal, frictionless surface. The block accelerates at 1.90 {rm m}/{rm s}^{2}. How much force pulls forward on (a) ice (b) rop..
The electric field midway between two equal but opposite point charges is 639 N/C, and the distance between the charges is 17.1 cm. What is the magnitude of the charge on each
Tarzan has foolishly gotten himself into another scrape with the animals and must be rescued once again by Jane. How high will Tarzan and Jane go on their first swing
An artillery shell is fired with an initial velocity of 300 m/s at 51.0° above the horizontal. To clear an avalanche, it explodes on a mountainside 47.0 s after firing. Illustrate what are the x and y coordinates of the shell where it explodes, re..
A Van de Graaff generator has a spherical dome of radius 20 cm. what is the maximum charge that can be held on the dome
A bar magnet is dropped through a coil of wire. Describe what will be observed on the galvanometer by sketching a graph of induced emf versus time
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