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The drawing shows two boxes resting on frictionless ramps. One box is relatively light and sits on a steep ramp. The other box is heavier and rests on a ramp that is less steep. The boxes are released from rest at A and allowed to slide down the ramps. The two boxes have masses of 13 and 40 kg. If A and B are 6.0 and 1.5 m, respectively, above the ground, determine the speed of
(a) the lighter box and
(b) the heavier box when each reaches B.
(c) What is the ratio of the kinetic energy of the heavier box to that of the lighter box at B?
A VW Beetle goes from 0 to 60 mi/hr with an acceleration of +2.35 m/s2. Find the acceleration (in m/s2) of the dragster
Two 18 cm diameter charged disks face each other, 25 cm apart. Both disks are charged to - 30 nC. What is the electric field strength at the midpoint between two disks.
A state highway patrol car radar unit uses a frequency of 9*10^9 Hz. What frequency difference will the unit detect from a car receding
Measuring distances to high precision is a critical goal in engineering. Numerous devices to exist to perform such measurements, with many involving laser light. How far was the laser originally from the object
A 4.8mH toroidal inductor has 140 identical equally spaced coils. If it carries an 11.5 A current, how much magnetic flux passes through each of its coils
throughout the process the mechanical device pushing the piston to compress gas is found to expend 4 kJ of energy. What is the magnitude of the heat flow between heat reservoir and the gas and in what direction does the heat flow occur.
find the charge on the block. A very small charged block with a mass of 2.05g is placed on an insulated, frictionless plane inclined at an angle of 17° with respect to the horizontal.
An astronaut at rest on Earth has a heartbeat rate of 70 beats/min. What will this rate be when she is traveling in a spaceship at 0.90c as measured (a) by an observer also in the ship and (b) by an observer at rest on the Earth?
The quartz tube is actually 921mm long × 15mm diameter ... use the tube circumference and length to: estimate the light's maximum Electric Field , at the outside of the tube
A proton moves perpendicularly to a uniform magnetic field at 5.0 107 m/s and exhibits an acceleration of 1.0 1013 m/s2 in the +x-direction when its velocity is in the +z-direction. find the magnitude and direction of the field.
A 59kg woman trips while walking down the street. She stumbles forward and falls onto her outstretched right hand. At the instant her hand contacts the ground her whole body is moving downward at a velocity of 9m/s and has a downward acceleration ..
A Simple Harmonic Oscillator consisting of a 305 g mass and a spring is set oscillating on a smooth flat surface. If the greatest speed of the mass is 1.50 m/s and the spring constant of the spring is 2.00 N/m.
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