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You need a capacitance of 40 µF but you don't happen to have a 40 µF capacitor. You do have a 56 µF capacitor. What additional capacitor do you need to produce a total capacitance
A 17.0 k resistor and a capacitor are connected in series and then a 18.0 V potential difference is suddenly applied across them. The potential difference across the capacitor rises to 11.0 V in 1.3
A window washer is standing on a scaffold supported by a vertical rope at each end. The scaffold weighs 200 N and is 3.20 m long. What is the tension in each rope when the 690 N worker stands 2.20 m
The object is attached to the rope at a horizontal position halfway between the two poles and at a vertical distance s = 1.092 m below the top of the left pole. Find the tension in each part of the
If an additional 5.0 mJ of energy are supplied to the rotational energy, what is the new angular speed of the ball?
1) If the angle between the rope and the horizontal is = 11.7, find the tension in the rope. 2) What is the smallest value the angle can have if the rope is not to break?
If B = .25 T and the particle has a charge- to-mass ratio of 4 × 10^7 C/kg, what is the radius of the particle's path?
The wire's length is 6.00 m, the end-to-end potential difference is 0.200 V, and the density of conduction electrons is 8.10 × 10^28 m-3. How long does an electron take (on the average) to tra
Through how many revolutions does the tub turn during this 22 s interval? Assume constant angular acceleration while it is starting and stopping.
A 2.10 x 102-N force is pulling an 85.0-kg refrigerator across a horizontal surface. The force acts at an angle of 17.0° above the surface. The coefficient of kinetic friction is 0.200, and the
A 6500-kg satellite is in a circular earth orbit that has a radius of 3.5 10^7 m. A net external force must act on the satellite to make it change to a circular orbit that has a radius of 8.9 10^6 m
For comparison, a .22 caliber bullet has a mass of 2.6 g and, starting from rest, exits the barrel of a gun with a speed of 412 m/s. Determine the work done to launch the motion of both the hammer a
By how much does the potential energy of a(n) 16.0-kg child increase when the child climbs a normal staircase to the second floor?
The drop in her vertical height is 2.6 m. If her mass is 59 kg, how much work is done by the (nonconservative) force of the wave?
When a resistor is connected by itself to an ac generator, the average power delivered to the resistor is 1.500 W. When a capacitor is added in series with the resistor, the power delivered is 0.375
When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.
The coefficient of kinetic friction between the box and the floor is µk = 0.47. If the system is set moving at v = 10.0 m/s with the block in front of the box, how long does it take for the sy
Consider light that is refracted by a prism shaped like an equilateral triangle. The incident ray is parallel with the prism's base. What is the total deflection of the ray, given that the index of
A 2.0µF capacitor and a 4.0µF capacitor are connected in series across 1000 V. The charged capacitors are then disconnected from the source and connected to each other with terminals of
A worker is dragging a box m = 63 up a ramp using a ropen.the ramp makes an angle of 35 above the horizantal the rope is parallel to the ramp and has tension 460.the coefficient of kinetic friction
A skier slides horizontally along the snow for a distance of 25 m before coming to rest. The coefficient of kinetic friction between the skier and the snow is µk = 0.040. Initially, how fast w
In being launched from rest it moves through a distance of 87 m and has a kinetic energy of 5.40 x 107 J at lift-off. What is the work done on the jet by the catapult?
In an ionic solution, 5.8 x 1015 positive ions with charge +2e pass to the right each second while 6.3 x 1015 negative ions with charge -e pass to the left. What are the magnitude and direction of cur
A person pulls a toboggan for a distance of 20.0 m along the snow with a rope directed 30.0° above the snow. The tension in the rope is 95.0 N. (a) How much work is done on the toboggan by the t
Suppose we create a magnetic field that produces an upward force on the wire exactly equal in magnitude to the wire's weight, causing the wire to "levitate". What are the field's direction and magni