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A mass of 1.67 kg stretches a vertical spring 0.318 m. If the spring is stretched an additional 0.139 m and released, how long does it take to reach the (new) equilibrium position again?
A disk with radius 0.5 m is oriented with its normal unit vector n at an angle of 30° to a uniform electric field E with magnitude 2.0 × 103 N/C. What is the flux through the disk if it is
A bullet of mass 3.1g is traveling at 300m/s. It penetrates a block of wood to depth of 15cm. Assume that the wood is trying to stop the bullet with constant retarding force. a) Find the magnitude o
A rotating flywheel that is brought up at its maximum speed (3000 rpm) stores how much energy? The flywheel is a solid cylinder of mass 1000 kg and a diameter of 1.0 m. ( I = MR2/2 ) Remember that
At what speed should the package be thrown to just make it through the window and at what speed should the package be thrown?
The radius of Venus's orbit is 0.72 times that of Earth's orbit. How much stronger is the Sun's gravitational field at Venus than at Earth?
A neutron has a kinetic energy of 10 MeV. What size aperture would be necessary to observe diffraction effects?
If you push a particle of mass in the direction in which it is already moving, you expect the particle's speed to increase. If you push with a constant force, then the particle will accelerate with
A current of is flowing in a typical extension cord of length. Find the total number of collisions that all free electrons in this extension cord undergo in one second.
A man of mass 81.5 kg walks down the aisle of an airplane at a speed of 1.20 m/s in the forward direction while the plane moves at a speed of 290 m/s relative to the earth.
Calculate the threshold wavelength, in nm, of a metal if that metal emits an electron with a kinetic energy of 6.32 × 10-19 J when illuminated with light that has a frequency of 1.97 ×
A clerk moves a box of cans down an aisle by pulling on a rope attached to the box. The clerk pulls with a force of 193 N at an angle of 25.0° with the horizontal. The box has a mass of 36.0 kg
If the current in the solenoid increases uniformly from 0 to 5.0 A in 0.48 s, what will be the induced emf magnitude in the short coil during this time?
A jeweler working with a heated 47 g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 degrees Celcius, what mass of water at 25 degrees Celcuis
A golf ball (m = 46.0 g) is struck with a force that makes an angle of 44.0° with the horizontal. The ball lands 199 m away on a flat fairway. If the golf club and ball are in contact for 6.92
The wire is 5m long and is secured at one end to the ceiling and hangs vertically. What is the largest mass that can be supported on the end of the wire before it breaks?
Suppose a ping-pong ball and a bowling ball are rolling toward you with the same momentum, and you exert the same average force in stopping each of them. Which ball can be stopped in the least time?
A 1.05-kg beaker containing 2.32 kg of oil (density = 904 kg/m3) rests on a scale. A 2.14-kg block of iron is suspended from a spring scale and is completely submerged in the oil (see figure below)
Calculate the magnitude of linear acceleration of the mass M. Icm = 0.963 kgm2 Inner radius, r = 0.50 m Outer radius, R = 0.65 m.
A 4 V flashlight battery has an internal resistance of 0.8 ? when new, and 9 ? when old. Imagine this is a resistor in series with the battery mounted INSIDE the battery itself, which describes the
A train is moving along a track with constant speed relative to the ground. Calculate the change in kinetic energy of the ball in the Earth frame of reference.
Determine the magnitude and direction of the friction force (assumed constant) that acts on the bullet
A bottle containing a 3 kg of water at a temperature of 20 degrees celcius. How much heat is transferred from the water to cool it to 3 degrees celcius?
A radio-controlled car increases its kinetic energy from 4 J to 12 J over a distance of 2 m. What was the average net force on the car during this interval?
A car is driven 145 km west and then 50 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?