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Julie is playing with a toy car and is pushing it around on the floor. The little car has a mass of 2.1 g. The car has a velocity of 3.3 m/s. What is the car's momentum?
A 49.7 kg sled starts at rest on a horizontal road. The coefficient of kinetic friction between the sled and the road is ?k = 0.247. estimate the work done by the frictional force on the sled
The planet Jupiter has a satellite, Europa, which travels in an orbit of radius 6.710×108 m with a period of 3.55 days. Calculate the mass of Jupiter from this information
Find out the angle theta_1 through which the flywheel will have turned during the time it takes for it to accelerate from rest up to angular velocity omega_1.
A surveyor starts at the southeast corner of a lot and charts the following displacements: A = 600 m, N; B = 400 m, W; C = 200 m, S; and D = 100 m, E. What is the net displacement from the starting point
The drawing shows a hydraulic system used with disc brakes. The force is applied perpendicularly to the brake pedal. find the force applied to each side of the rotating disc
A 16320-kg airplane lands with a speed of 89 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by nonconservative forces in stopping the plane
Suppose that the potential seen by a neutron in a nucleus can be represented (in one dimension) by a square well of width 10^12 cm with very walls. What is the minimum kinetic energy of the neutron in this potential, in Mev?
Two flat mirrors meet at angle theta. An incoming ray reflects off of both mirrors before emerging from the mirror-pair. Show that the angle among the incoming ray and the exiting ray is phi = 180° – 2theta.
A 100g piece of gold that is heated to 160C and placed in 200g of 20C water. What is the equilibrium temperature if the specific heat of gold is 0.128J/gC and specific heat of water is 4.18 J/gc?
Two adjacent natural frequencies of an organ pipe are found to be 1260 Hz and 1350 Hz. Calculate the fundamental frequency and length of this pipe
A person drives north at 25 m/s for 10 min. west at 10 m/s for 15min and 20 m/s for 5 min. on a road that is at an angle of 30° south of east. What is the displacement for each part of the drive
When a ceiling fan rotating with an angular speed of 3.50 rad/s is turned off, a frictional torque of 0.257 N•m slows it to a stop in 4.95 s. Find the moment of inertia of the ceiling fan
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