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Two identical metal spheres are 2.0 g each and are charged equally. They have a separation distance of 3.0m. What is a displacement current
John measured the thickness of a book using a ruler. Calculate the mean thickness of the book.
A 2.61e-6 F capacitor is charged to 1270 V and a 6.58e-6 F capacitor is charged to 420 V. what will be the potential difference across each
Two long straight wires are carrying current out of this page. Make the plane of this paper the x-y plane, and put one wire at the origin with 5 A., find the force per unit length on that wire
A bullet with mass 5.44 g is fired horizontally into a 2.103-kg block attached to a horizontal spring. Find the initial speed of the bullet-block system
A 10 \rm g bullet traveling at 440m/s strikes a 12kg , 1.2-\rm m-wide door at the edge opposite the hinge. The bullet embeds itself in the door, What is the angular velocity of the door just after i
A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The constant speed of the horse is 10.0 m/s, How long is he in the air
A unit vector lies in the xy plane, at an angle of 138 degrees from the +x axis, with a positive y component. What is the unit vector
A circular loop of wire is oriented so that its normal is perpendicular to the earth's horizontal magnetic field (B = 2.87 x 10^-5 T). Calculate the radius of the loop
A bullet is fired through a board 8.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. Find the total time the bullet is in contact with the board
A Cessna aircraft has a liftoff speed of 120 km/h. How long does it take the aircraft to become airborne
How much work would it take to move a positive charge, 1uC, from the negative side of a parallel plate combination to the positive side when the voltage difference across the plates is 100V
An electron is accelerated through 15 kV and is then allowed to circulate at right angels to a uniform magnetic field with B = 25 mT. What is its path raduis
One cubic meter of water flowing over Niagara Falls in New York drops 98.1 meters. how much heat energy would the water have
A lead bullet with a mass of 0.03 kg traveling at 187 m/s strikes an armor plate and comes to a stop. what is the temperature change
A 818 kg car is going 28 m/s and the driver has to slam on his brakes to prevent an accident. find the change in temperature of the brake pads and rotors
A golf ball of mass 4.50 10-2 kg is struck by a club. Compute the average force the club exerts on the ball by finding its average acceleration
Air in a balloon does 46 J of work while absorbing 94 J of heat. What is the change in internal energy
Suppose that while moving into an apartment you move a refrigerator into place by sliding it across the floor. What is the least force you could exert on the refrigerator to move it
A 8.75-\mu {\rm C} point charge is glued down on a horizontalfrictionless table. What would the tension be if both charges were negative
A 2.2 mH inductor is connected in parallel with a variable capacitor. The capacitor can be varied from 100 pF to 270 pF. What is the range of oscillation frequencies for this circuit
A tiger leaps horizontally from a 5.5 m high rock with a speed of 3.9 m/s. How far from the base of the rock will she land
A baseball is bunted down the third-base line leaving the bat from a height of 0.800m with an initial velocity of 8.00m/s at an angle 30 degrees above the horizontal. What is the speed of the ball j
A small rock is thrown vertically upward with a speed of 18.0 m/s from the edge of the roof of a 40.0 m tall building. What is the speed of the rock just before it hits the street
A car is traveling in the x direction with a velocity of 20 m/s. The driver applies the brakes, What is the stopping distance