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A 5.00-kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. The object is set into vertical oscillations having a period of 1.60 s. Find the force constant of the spring.
an object is placed 15 cm from first converging lens of focal length 10 cm.a. a second converging lens with focal
a johnny is running home from school to watch his favorite soap opera as the stomach turns. he runs 6 blocks east to a
Near the South Pole, a supply plane going at 120 mph drops a 60 kg supply package into a sled that was initially at rest. Estimate the mass of the sled
Water flows from a fire truck through a hose that is 11.7 cm in diameter and has a nozzle that is 2 cm in diameter. Determine the minimum gauge pressure in the trucks water tank
Wile. E. Cayote runs full-speed into a bank vault just as the door is closing. What was the doors angular speed right before the collision
a projectile is launched vertically from the surface of the moon with an initial speed of 1100m/s. At what altitude is the projectile's speed one-half its initial value
A certain star is 14 million light-years from Earth. The intensity of the light that reaches Earth from the star is 4.00 x 10-21 W/m2. At what rate does the star radiate EM energy.
A 4.00 kg model rocket is launched, expelling 46 g of burned fuel from its exhaust at a speed of 590m/s. What is the velocity of rocket after the fuel has burned? Hint: overlook the external forces of gravity and air resistance.
In one cycle, a freezer uses 780J of electrical energy in order to remove 1730J of heat from its freezer compartment at 10.0 oF. What is the coefficient of performance of this freezer
After an eye examination, you put some eyedrops on your sensitive eyes. The cornea (the front part of the eye) has an index of refraction of 1.38, What is the minimum thickness of the film of eyedrops on your cornea
The atomic planes in a crysral are spaced d = 0.50 nm apart. These planes are used in a diffraction experiment with X-rays with ? = 0.05 nm. What are the diffraction angles for the first three bright fringes
How much energy is required to accelerate a spaceship with a rest mass of 128 metric tons to a speed of 0.403 c?
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