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An 845-N sled is pulled a distance of 168 m. The task requires 1.20 multiplied by 104 J of work and is done by pulling on a rope with a force of 121 N. At what angle is the rope held?
A 1300-kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 48.5 m?
The rms speed of the molecules in 1.9g of hydrogen gas is 1600 m/s. What is the total translational kinetic energy of the gas molecules?
A 6.15 kg block slides 1.49 m down a frictionless incline that makes an angle of 60.0° with the horizontal. What is the total work done on the block?
tom the cat (10kg) is chasing Jerry the mouse across a table surface 2.0m above the floor. Jerry steps out of the way at the last moment, and Tom starts sliding at a speed of 3.0m/s. The coefficient
A space traveler weighs 535 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
A 10.0-m-long wire of mass 123 g is streched under a tension of 255 N. A pulse is generated at one end, and 20.0 ms later a second pulse is generated at the opposite end. Where will the two pulses f
A train is traveling up a 3.1 incline at a speed of 2.95 when the last car breaks free and begins to coast without friction.
Find the new energy of the capacitor, .4.In the process of removing the remaining portion of the dielectric from the disconnected capacitor, how much work is done by the external agent acting on the
A 1.0 Kg mass on a 37 degree incline is connected to a 3.0 kg mass on a horizontal surface. The coefficient of kinetic friction between all surfaces is 0.10 and the pulley is frictionless and the ap
What is the direction of relative to due south? (b) Suppose that had a magnitude of 3.75 km. What then would be the magnitude of , and what is the direction of relative to due south?
If a 180 g mass is placed at the 22 cm mark (28 cm from the fulcrum), at what mark should a 500 g mass be placed so that the system balances?
A girl weighing 440 N sits on the left end, and a boy weighing 640 N sits on the right end. The see saw is balanced when the board is pivoted 1.1 m from the right end. How much does the board weigh?
300 J of work are done to compress the gas while, in the same process, 1800 J of heat energy are transferred from the gas to the environment. Afterward, what is the rms speed of the molecules?
A ladder of mass 30 lbs. is leaned at an angle of 79 degrees against a smooth frictionless wall. What is the magnitude of the reaction (in lb-wt) where the ladder touches the wall?
Two small metal spheres with masses 2.0 and 4.0 are tied together by a 5.3--long massless string and are at rest on a frictionless surface. Each is charged to +1.5 . What is the total energy of the
What is the strength of the magnetic field required to exactly balance the weight of the proton and keep it moving horizontally?
An 82 kg man drops from rest on a diving board 3.0 m above the surface of the water and comes to rest 0.55 s after reaching the water. What force does the water exert on him?
A major league catcher catches a pitch initially traveling at 41 m/s. If the catcher brings the pitch to rest in 0.15 m and exerts a force of 803 N, what is the mass of the ball?
The bullet's rate of deceleration from 403 m/s, is 3 m/s/s/s, terminally reaching 15m/s. Assume air resistance has no effect on the bullet. What distance will the bullet travel until it hits the gro
The elevator is moving upward with an acceleration of magnitude 1.3 m/s2. What pressure (in excess of atmospheric pressure) is applied to the floor beneath the suitcase?
A 160 air-track glider is attached to a spring. The glider is pushed in 9.40 and released. A student with a stopwatch finds that 13.0 oscillations take 18.0 .What is the spring constant?
Determine the kinetic frictional force that acts on the box for each of the following cases. The elevator is accelerating upward with an acceleration whose magnitude is 2.90 m/s2.
A person is trying to move a dresser by pushing it with a horizontal force applied at a height above the floor. The dresser has mass , length , and height . The coefficient of kinetic friction betwe
Assume the loop's magnetic field is uniform across the coil. What is the magnitude of (a) the magnetic field produced by the loop at its center and (b) the torque on the coil due to the loop?