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A 6,300-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 7 m/s. Compute how much kinetic energy was "lost" in this inelastic collision.
a. If the spring stretched 16 cm when you first hang the mass on it, how long will one oscillation take? b. Draw a position vs. time graph for two cycles of motion. Consider the position y = 0 to be the equilibrium position of the mass hanging on t..
A ball is thrown horizontally off a bridge at 35m/s. The bridge is 25m above the water below. Where will the ball land horizontally from the bridge
Use Figs. 2.5.2 and 2.5.3 to calculate W, ?, and eff for a characteristic impedance of 50 O using RT/Duroid® with er = 2.23 and h = 0.7874 mm.
As monochromatic light passes from air to glass and back to air, changes are observed in its Wavelength and frequency. Wavelength, frequency, and speed. Frequency and speed.
The power lines must carry only 200 A of current to be efficient enough. To what voltage must the potential be increased?
A person can jump a horizontal distance of 2.82m on Earth, where the free-fall acceleration, g = 9.81 m/s2. How far might the person jump on the moon, where the free-fall acceleration is g/6? How far could the person jump on Mars where the accelerati..
A hypodermic syringe contains a medicine with the density of water. The barrel of the syringe has a cross-sectional area of 2.5 x10-5 m2.
A slab of glass with an index of refraction of 1.55 is submerged in a liquid with an index of refraction of 1.25. Find the angle of refraction for the angle of incidence of 60°
A 48 kg skier starts from rest at a height of H = 27 m above the end of the ski-jump ramp. As the skier leaves the ramp, his velocity makes an angle of 28° with the horizontal. avoid the effects of air resistance and assume the ramp is frictionles..
A person is having trouble seeing. Bifocals must be prescribed for him. His far point is 78.0 cm, and his near point is 57.0 cm. What two lenses (with power in dioptres) must be prescribed to enable him to see clearly from a comfortable reading dista..
A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0 cm. If a timer is started when its displacement is a maximum (hence x =4cm when t=0), what is the acceleration magnitude when t= 3 s? What is th..
To make a bounce pass, a player throws a 0.60 kg basketball toward the floor. what was the impulse delivered to it by the floor
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