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A car starts from rest and moves around a circular, horizontal,level track of radius 30.0 m. Its speed increases at the constantrate of 0.500 m/s2. (a) What is the magnitude ofthe net acceleration 15.0 s later? (b) What angle does the net acceleration make with the car's velocity at this time?
A 75-kg man is riding in a 75-kg cart at 1.0 m/s. He jumps off in such a way as to land on the ground with no horizontal velocity
The kinematics and dynamics of rotation around a fixed axis of a rigid body are mathematically much simpler than those for free rotation of a rigid body; they are entirely analogous to those of linear motion along a single fixed direction, which is n..
A current of constant density, J0, flows through a very long cylindrical conducting shell with inner radius a and outer radius b. What is the magnetic field in the regions rb
Solid argon has a density of 1650 kg/m cubed. The atomic weight of argon is 40. Assuming each atom occupies a cubical volume, what is the distance bewteen the argon atoms
A massless spring hangs from the ceiling with a small object attached to its lower end. How far below yi is the new equilibrium (rest) position with both objects attached to the spring
Suppose that a 1.00 cm3 box in the shape of a cube is perfectly evacuated, except for a single particle of mass 1.05 10-3 g. Find the mass density inside the box
A 50-kg pole vaulter running at 14 m/s vaults over the bar. Her speed when she is above the bar is 1.7 m/s. determine her altitude as she crosses the bar
What is the magnitude of the free-fall acceleration of a ball (mass m) due to the Earth's gravity at an altitude of 7R, where R is the radius of the Earth
Three identical train cars, coupled together, are rolling east at 1.2 m/s. What is the speed of the five-car train
An athlete starts at point and runs at a constant speed of 6.20 around a round track 250 in diameter, Find the component of this runner's average acceleration between points
A 80 kg man in a 7.0 kg chair tilts back so that all the weight is balanced on two legs of the chair. Assume that each leg makes contact with the floor over a circular area with a radius of 1.0 cm,
To determine the muzzle velocity of a bullet fired from a rifle, you shoot the 3.57-g bullet into a 2.47-kg wooden block. The block is suspended by wires from the ceiling and is initially at rest. After the bullet is embedded in the block, the block ..
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