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The horizontal surface on which the objects slide is frictionless. The acceleration of gravity is 9.8 m/s2. If Fl = 16 N and Fr = 6N, what is the magnitude of the force exerted on the block with mass 8 kg by the block with mass 5 kg?
The 2.0 cm diameter coil shown below has 25 turns and has a current flowing through it of 5.00 A. What is the average change in flux (25 turns) going from 30 to 90 degrees
What is the differential equation for free vibrations in the y direction with damping? Write your equation using the quality factor, Q, and the undamped frequency wo (omega naught)
Solid disk of radius 0.5m and mass 5kg is rotating countercw about central pivot with ω=10sec^-1. A constant fictional foce of 3N aplpied on outer edge is used to slow disk to a stop. How long in time does it take for the disk to stop? How many re..
A basketball player makes a jump shot. The 0.520-kg ball is released at a height of 1.90 m above the floor with a speed of 7.13 m/s, What is the work done on the ball by air resistance, a nonconservative force
A bar magnet with its center at the origin has a magnetic dipole moment equal to 6.50 J/T, directed along the positive z axis. Find the strength of the magnetic field created by this bar
In changing the state of a gas adiabatically from an equilibrium state A to another equilibrium state B, how much is the net work done by the system in the latter case
To estimate the muzzle speed of a blow dart, fire dart straight up into the air and time how long it takes to come back down. Roughly half of that time is the time for object to decelerate from its initial velocity to motionless. Estimation the in..
The far point of an eye is 145 cm. A corrective lens is to be used to allow this eye to focus clearly on objects a great distance away. What is the power of the needed corrective lens in diopters
A copper bar is moved to the right while its axis is maintained in a direction that is perpendicular to a magnetic field. what is the direction of the magnetic field
A charge of +7.80 x 10-4 C is fixed at the origin of a coordinate system. A charge of +8.35 x 10-6 C is placed on a raisin of mass 5.35 g. What is the electric potential energy of the system
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. The protons come to rest in the tumor, What is the total charge of the protons that must be fired at the tumor to deposit the required energy
Speedboat A negotiates a curve whose radius is 150m. Speedboat B negotiates the curve whose radius is 190m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
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