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A projectile is launched at 15m/s at an angle of 30 degrees above the horizontal from the edge of a cliff. If the projectile lands 10m horizontally from the base of the cliff what is the height of the cliff?
A transmitter is operating at 4.00 kW of power. what is the average intensity of the signal 8.00 km from the transmitter
concrete has a higher specific heat than soil does. use this fact to explain partially why cities have a higher average
You have just landed on a planet. You take out a block of mass 245g , release it from rest from a height of 14.01m, What is the acceleration of gravity on this planet
the wavelength of red helium-neon laser light in air is 632.8 nm.a what is its frequency?b what is its wavelength in
A 0.390 kg iron horseshoe that is initially at 745 °C is dropped into a bucket containing 24 kg of water at 46 °C. What is the final equilibrium temperature? Overlook any heat transfer to or from the surroundings.
A 92 kg climber rappels down the rope applying friction with figure eight (piece of climbing equipment ) to reduce his his downward acceleration.
A solid, uniform ball rolls without slipping up a hill, How far from the foot of the cliff does the ball land
X-rays having an energy of 250 keV undergo Compton scattering from a target. Find the Compton shift at this angle
in proton-beam therapy a high-energy beam of protons is fired at a tumor. the protons come to rest in the tumor
Jupiter has an average distance from the Sun that is about 5.2 times that of Earth. determine the orbital period for Jupiter
A 10 kg box slides 4.0 m down a frictionless ramp and collideswith a spring as shown in the figure. The spring constant is 250N/m. At what compression of the spring does the box have its maximum speed?
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. What is the weight of the heaviest bear that the ice can support without sinking completely beneath the water
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