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A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 15.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a constant acceleration of 2.43 m/s2 for a distance of 60.0 m to the edge of the cliff, which is 25.0 m above the ocean.
A rubber ball with a radius of 3.2 cm rolls along the horizontal surface of a table with constant linear speed v. When the ball rolls off the edge of the table, it falls 0.66 m to thefloor below. If the ball completes 0.37 revolution during its fall,..
In a head-on collision, a car stops in 0.3s from a speed of 30 m/s. What is the force applied to the driver by his seat belt during the collision
In the figure to the left, the pulley (which is in the form of a disk) has a mass of 7.50 kg and a radius of 35 cm. What is the speed of the iron block
A rectangular coil with 20 windings carries a current of 1.87 mA flowing in the counterclockwise direction. What torque must be applied to the loop to hold it steady
Two point charges are separated by 6 cm. The attractive force between them is 20 N. Find the force between them when they are separated by 12 cm. (Why can you solve this problem without knowing the magnitudes of the charges?)
an observer that is listening to a stereo through a speaker decides to walk away from the speaker to a position that is
Find out the friction force on the box
A crate of mass 9.8 kg is pulled up a rough incline with an initial speed of 1.56 m/s. The pulling force is 102 N parallel to the incline, What is the change in kinetic energy of the crate
Determine the image distance for an object d0 = 5.100 cm from a diverging lens of radius of curvature 4.080 cm and index of refraction 1.800. What is the magnification of the object
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
Near Earth, the density of protons in the solar wind (a stream ofparticles from the Sun) is 8.80cm-3 and their speed is about 470 km/s. Find the current density of these protons
During a thunderstorm the electric field at a certain point in the earth's atmosphere is 1.11 105 N/C, directed upward, Find the acceleration of a small piece of ice of mass1.08 10-4 g
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