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It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 6.10 10-5 T. Determine the radius of the path?
Sally applies a horizontal force of 254 N with a rope to drag a wooden crate across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 55? relative to the floor. What
The loaded cab of an elevator has a mass of 2500 kg and moves 215 m up the shaft in 22 s at constant speed. At what average rate does the force from the cable do work on the cab?
When its coil rotates at a frequency of 258 Hz, a certain generator has a peak emf of 76 V. (a) What is the peak emf of the generator when its coil rotates at a frequency of 46 Hz?
a bottle containting 3kg of water at a temperature of 20 degrees celcius is placed in a refridgerator where the tmperature is kept at 3 degrees celcius. How much heat is transferred from the water t
He has tied 150 cm of string to the handle of the bucket (assume the length of string required to tie it on equals the length of the bucket and its bail) and is swinging it around his head in a circ
A water skier is pulled by a net force of 187 N and has an acceleration of 2.2 m/s2. What is the mass of the skier?
The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°. Find (a) the tension in the support cable and (b) the magnitude of th
when a new equilibrium has been established, there are 5.0 g less ice. From what height was the ball dropped? Assume no water or ice splashed out.
Consider an RC circuit in which a capacitor is being charged by a battery connected in a circuit. Initially the capacitor is uncharged. Then the switch is closed. After a time equal to 1.8 time cons
With the tank empty, the inlet valve is opened with a step change from 0 to 0.25 m3/s. Determine the level after 0.05 s and the final level in the tank.
A uniform disk turns at 3.7 rev/s around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk, s
Find the gauge pressure at a second point in the line 11.0 lower than the first if the pipe diameter at the second point is twice that at the first.
Hold a pocket mirror at almost arm's length from your face and note the amount of your face you can see. To see more of your face, should you hold the mirror closer or farther, or would you have to
A proton, mass 1.67 · 10 -27 kg and charge +1.6 · 10 -19 C, moves in a circular orbit perpendicular to a uniform magnetic field of 0.75 T. Find the time for the proton to make one com
A rectangular block of ice 6 m on each side and 0.9 m thick floats in sea water. The density of the sea water is 1025 kg/m^3. The density of ice is 917 kg/m^3. How many penguins of mass 24 kg each c
The wire has a linear charge density of -8.0 pC/m, and the cylinder has a net charge per unit length of -4.0 pC/m. Determine the magnitude of the electric field 3.0 cm from the axis.
Find the tension in the support cable and find the magnitude of the force exerted on the lower end of the boom by the hinge.
A 2000 kg car is slowed down uniformly from 21.0 m/s to 10.00 m/s in 3.60 s. (a) What average total force acted on the car during that time? (b) How far did the car travel during that time?
After the engine is ignited, what is the rocket's speed when the spring has stretched 15.8 cm past its natural length? What would be the rockets speed after travelling the distance if it weren't tie
The current in each wire is 10.00 A, but its direction in wire M is opposite to that in wires N and P (see figure). Determine the magnetic force per unit length on each wire due to the other two?
A mountain climber jumps a 3.0m wide crevasse by leaping horizontally with a speed of 8.0 m/s. If the climber's direction of motion on landing is -45 degrees, what is the height difference between
If the current in the windings is 0.531 A and a constant magnetic field of 0.594 T makes an angle of 65? with a vector perpendicular with the loop, what torque acts on the loop?
A diving board length = 5.60 that weighs 210 is supported by two pillars. One pillar is at the left end of the diving board, as shown below; the other is distance = 1.60 away. Find the magnitude of
Air fills the volume between the plates. What potential difference is required to establish a 3.0 uC charge on the plates?