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An object with mass 1.2 kg slides down a smooth ramp. Initial height is 2m. It is a smooth horizontal track (no friction). If a spring with elastic constant k=3 E4 N/m is placed on the horizontal track, by how much is the spring compressed by the object?
Light in a vacuum is incident on a transparent glass slab. The angle of incidence is 38.8°. What is the index of refraction of the liquid
You are driving to grocery store at 15 m/s .You is 140 m from an intersection when the traffic light turns red. Suppose that your reaction time is 0.70 s. and that your car brakes with constant acceleration. How far are you from the intersection whil..
A uniform ladder 7.34m long weighing 410N rests with one end on the ground and the other end against a perfectly smooth vertical wall. What force does the wall exert on the ladder
An object with a charge of 4.6 MicroC moves from moves from the top to the bottom of this page at a speed of 16.6 m/s. What is the direction of this magnetic field force
The loaded cab of an elevator has a mass of 3.7 x 10^3 kg and moves 228 m up the shaft in 21 s at constant speed. At what average rate does the force from the cable do work on the cab.
a ball is thrown at an angle of 30 degrees with an initial velocity of 20 ms at an elevation of 10 m. how long will it
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat makes. what is the smallest insect a bat can detect
the speed of light in a certain material is measured to be 2.2*10^8 m/s. what is the index of refraction of this material
Ice at -14.9 °C and steam at 115 °C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 52.0 °C is present.
A convex mirror has a focal length of -20 cm. What is the position of the resulting image in cm if the image is upright and one-fourth the object size
Two forces act on a block of wood. The first force has a magnitude of 8.66 N in a direction 12.0 degrees counterclockwise from the positive x-axis, What is the magnitude of the resulting force
Tom the cat chases a Jerry the mouse across a 1.2m high table. Jerry steps out of the way at the last second, and Tom slides off the table and strikes the floor 1.5m from the edge of the table.
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