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A 2.00 kg block slides along a horizontal surface and is moving at 5.00 m/s just as it strikes a horizontally-mounted ideal spring (k = 100.N/m) that is fastened to a rigid wall on the other end of the spring. The spring first slows the car down to rest and then launches it back in the direction from which it came but with a speed of 3.00 m/s. Find the work done by friction in this process.
An aluminum block slides along a horizontal surface. The block has an initial speed of 10.0 m/s and an initial temperature of 10.8 C. The block eventually slides to rest due to friction. Assuming all the initial kinetic energy is converted to heat..
A film of MgF2 (n = 1.38) having thickness 1.68 10-5 cm is used to coat a camera lens. What are the three longest wavelengths that are intensified in the reflected light
Two parallel wires of length 18 m are separated by a distance of a = 0.13 cm. The first carries a current of I1 = 5 A, What is the magnetic force on each wire
A wave traveling in the +x direction has an amplitude of 0.186 m, a speed of 3.27 m/s, Write the equation of the wave
Assuming that the atom was initially at rest, determine the recoil speed of the hydrogen atom when this photon is emitted
A sample of dry air has a temperature of 300 K, a volume of 3 liters and a pressure of 4 atmospheres. The air then undergoes the following changes: (a) it is warmed under a constant pressure to 500 K, (b) it is cooled under constant volume to 250 ..
The intensity of the sunlight that reaches Earth's upper atmosphere is approximately 1450 W/m2. Find the rms value of the magnetic field.
A wire carrying a current of 2.10 A is bent into the shape of a square loop of side length 5.92 cm and is placed in the xy-plane. What is the torque on the wire loop
35mm camera is equipped with a 45 mm focal length lens is used to photograph a tree 15 m tall, what is the aperture diameter
A 47.0-g golf ball is driven from the tee with an initial speed of 50.0 m/s and rises to a height of 25.6 m. Neglect air resistance and determine the kinetic energy of the ball at its highest point
Suppose you want to make a rainbow by spraying mist from a garden hose into the air. Why can't you ever walk under the rainbow
A state trooper chases a speeder along a straight stretch of road; both vehicles move at 136 km/h. The siren on the tropper's vehicle produces a sound of 490 Hz. What frequency is heard by speeder? (Take the speed of sound in air to be 343 m/s.)
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