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A 1.5-m tall woman stands 5.0-m in front of a camera with a 4.0-cm focal length lens. What is the size of the image formed on film?
The time it takes for the ball to fall halfway to the ground is 1.2 s. Find the time it takes for the ball to fall from rest all the way to the ground.
A 22.0-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 78.5 N and is directed at an angle of 30.0° above the horizontal. Determin
At time a grinding wheel has an angular velocity of 27.0. It has a constant angular acceleration of 33.0 until a circuit breaker trips at time = 1.70. From then on, the wheel turns through an angle
Assume that the free-fall acceleration is constant throughout and that the effects of the air can be ignored. What is the maximum height reached by the projectile?
A curve of radius 120 m is banked at an angle of 25o. If the coefficient of static friction between the road and the car is 0.40, what are the maximum and minimum speeds the car can have without sk
A bug is splattered on a car windshield. Compare the magnitude of the windshield's force on the bug to the magnitude of the bug's force on the windshield.
If the driver waited 0.80 seconds before physically pressing on the brake(reaction time), determine the displacement (to two decimal places) necessary for the driver to react and then stop the car.
What are the first, second, and third frequencies audible from a 20 cm long organ pipe when (A) only one end is open and when (B) both ends are open.
A merry-go-round has a mass of 1420 and a radius of 7.05 . How much net work is required to accelerate it from rest to a rotation rate of 1.00 revolution per 8.70 ? Assume it is a solid cylinder.
A car starts from rest on a curve with a radius of 190 and accelerates at 0.700. How many revolutions will the car have gone through when the magnitude of its total acceleration is 3.50?
person of mass 72 stands at the center of a rotating merry-go-round platform of radius 3.4 and moment of inertia 950 . The platform rotates without friction with angular velocity 0.95 . The person
A 96.0 N grocery cart is pushed 10.0 m along an aisle by a shopper who exerts a constant horizontal force of 40.0 N. If all frictional forces are neglected and the cart starts from rest, what is th
A mass a 2.62 kg stretches a vertical spring .315 m. If the spring is stretched an additional .130 m and released, how long does it take to reach the (new) equilibrium position again?
A ball is dropped from height h , striking the ground ball rebounds to height h/2 . This process continues . Draw velocity - time graph
A 72 kg person sits on a 4.0 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. What is the pressure exerted on the floor?
What are 5 interesting facts about specific heat capacity? i have a write up due in tomorrow and want to spice it up a bit! thanks!
A worker stands still on a roof sloped at an angle of 35.4° above the horizontal. He is prevented from slipping by a static frictional force of 413 N. Find the mass of the worker.
A flywheel having constant angular acceleration requires 4.60 {rm s} to rotate through 162 rad. Its angular velocity at the end of this time is 100 rad/s. Find the angular velocity at the beginning
While rearranging a dorm room, a student does 292 J of work in moving a desk 3.9 m. What was the magnitude of the applied horizontal force?
An 9.00 {rm kg} point mass and a 14.0 {rm kg} point mass are held in place 50.0 {rm cm} apart. A particle of mass m is released from a point between the two masses 14.0 {rm cm} from the 9.00 {rm kg}
A 2.1 x 10^3 kg car starts from rest at the top of a driveway that's sloped at an angle of 20.0 degrees with the horizontal. An avg. friction force of 4.0 x 10^3 impedes the cars motion so that the
A 63.0 resistor is connected in parallel with a 115.0 resistor. This parallel group is connected in series with a 19.0 resistor. The total combination is connected across a 15.0 V battery. (a) Find
Three point charges with values = 4.00 , = 3.00 , and = 5.00 are placed on three consecutive corners of a square whose side measures = 2.00 . Point A lies at the fourth corner of the square, diagona
The initial temperature of system is 313 K and the pressure of the gas is held constant at 137 kPa.The temperature is now increased until the height of the piston rises from 23.4 cm to 26.0 cm. Wha