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A bicycle wheel, of radius 0.34 m and mass 3 kg (concentrated on the rim), is rotating at 4.14 rev/s. After 45 s the wheel comes to a stop because of friction. What is the magnitude of the average t
An object has a kinetic energy of 312 J and a momentum of magnitude 21.8 kg⋅m/s. Find the speed and the mass of the object.
A drum rotates around its central axis at an angular velocit of 12.60 rads/s. If the drum then slows at a constant rate of 4.20 rads/s2 (a) how much time does it take and (b) through what angle does
A 6090 kg space prove moving nose-first toward Jupiter at 105 m/s relative to th sun fires it rocket engine, ejecting 80.0 kg of exhaust at a speed of 253 m/s relative to the space probe. What is th
Determine the radial acceleration of the car at this time (when it has traveled 1/4 of a circle).
Block 1 of mass m1 slides along a frictionless floor and into a one dimensional elastic collision with a stationary block 2 of mass m2 = 3m1. Prior to the collision, the center of mass of the two-bl
A 5.20 g bullet of mass 10 g strikes a ballistic pendulum of mass 2. kg. The center of mass of the pendulum rises a vertical distance of 12 cm. Assuming that the bullet remains embedded in the pendu
A space vehicle traveling at 4300 km/h relative to earth when the exhausted rocked motor (mass 4m) is disengaged and sent backward with a speed of 82 km/h relative to the command module (mas m). Wha
A pair of identical coils, each having a radius of 30 cm, are separated by a distance equal to their radii, that is, 30 cm. Called Helmholtz coils, they are coaxial and carry equal currents in direc
Define potential difference. What is the difference between electric potential and electric potential energy? What is the unit for potential difference?
A uniform solid ball rolls smoothly along a floor, then up a ramp at 14.0°. It momentarily stops when it has rolled 1.30 m along the ramp. What was its initial speed?
A uniform cylinder of radius 40 cm and mass 22 kg is mounted so as to rotate freely about a horizontal axis that is parallel to and 55.0 cm from the central longitudinal axis of the cylinder. (a) W
A cannon ball is shot with 99 m/s horizontal velocity. It achieves a maximum height of 112 m. How far did the cannon ball travel horizontally?
The mass of a block is 4.2 N, the average force of kinetic friction is 66.6 N and the average force of static friction is 120 N. Calculate the following.
A spherical conducting shell has a charge of -17 µC on its outer surface and a charged particle in its hollow. If the net charge on the shell is -12 µC, what is the charge (a) on the inn
(a) What was the net charge enclosed by the outer surface before Q was introduced? (b) What is charge Q ? After Q is introduced, what is the charge on the (c) inner and (d) outer surface of the cond
A point charge q = 1.7 x 10^-7 C is at the center of a spherical cavity of radius 2.3 cm in a chunk of metal. Use Gauss' law to find the magnitude (in N/C) of the electric field (a) 1.3 cm from the
A wire circle of radius 0.050 m is embedded in a solenoid of length 0.20 m with 1000 turns that carries a current of 0.50 A. If a vector that is normal to the plane of the circle makes a 40° ang
A uniform surface charge of density 8.6 nC/m^2 is distributed over the entire xy plane. What is the electric flux through a spherical Gaussian surface centered on the origin and having a radius of 8
A 3.90--long, 590 steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 74.0 construction worker stands at the far end of
1. A hunter drags a dead deer which has a masss of 20 kg for 18 meters. How much work did he do? If it took him 1.5 min and what power did he develop? 2. A high speed industrial drill with a diamet
If the heavier fragment gains 140 J of kinetic energy from the explosion, how much kinetic energy does the lighter one gain?
A pitcher throws a curve ball that reaches the catcher in 0.60 seconds. The ball curves because it is spinnning at an average angular velocity of 330 rev/min (assumed constant) on it's way to the ca
You are an astronaut in the space shuttle pursuing a satellite in need of repair. You are in a circular orbit of the same radius as the satellite (410 km above the Earth), but 28 km behind it.
If the potential energy of the pendulum-Earth system is taken to be zero at the stone's lowest point, what is the total mechanical energy of the system?