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Question: A ball thrown horizontally from a point 15 meters above the ground with initial horizontal speed of 29 m/s. How far will it travel horizontally before it hits the ground? (use g = 10 m/s2; round your answer to two decimals). A ball thrown horizontally from a point 39 meters above the ground, strikes the ground after traveling horizontally a distance of 12 meters. With what speed was it thrown? (use g = 10 m/s2; round your answer to two decimals)
Four point charges are positioned on the rim of a circle. The charge on each of the four is +0.5 µC, +1.5 µC, -1.0 µC, and -0.5 µC, determine the total electric potential at the center due to the four charges
A "110-watt" lightbulb uses an average power of 110 W when connected to an rms voltage of 120 V. What is the resistance of the lightbulb? What is the maximum current in the bulb? What is the maximum power used by the bulb at any given instant of t..
You are at the controls of a particle accelerator, sending a beam of 3.00×107 protons (mass ) at a gas target of an unknown element. Find the mass of one nucleus of the unknown element
Calculate the average pressure exerted on the palm of a shot-putter's hand by the shot, if the area of contact is 48.0 cm2 and he exerts a force of 810 N on it.
Fireflies emit flashes of light to communicate, directly converting chemical energy into the energy of visible-light photons. How many photons does the firefly emit during each flash
An LC circuit is built with a 10mH inductor and an 8.0pF capacitor. The capacitor voltage has its maximum value of 45V at t=0s. How long is it until the capacitor is first fully discharged
A drunk driver in a 1700 kg car plows into a 1300 kg parked car with its brake set. how fast was the drunk going just before the collision
You were driving a car with velocity ‹ 19, 0, 11 › m/s. You quickly turned and braked, and your velocity became ‹ 13, 0, 15 › m/s. The mass of the car was 1200 kg. What was the (vector) change in momentum
A Carnot freezer that runs on electricity removes heat from the freezer compartment, which is at -10.0C and expels it into the room at 27.0C. What is the coefficient of performance of this freezer
A muon is created at the top of Mount Nanga Parbat (height 8,100 m) and travels at constant speed to sea level, what is the height of Mount Nanga Parbat
A 50 Newton horizontal force pushes a 10 kilogram mass sitting on a horizontal surface towards the right. Additionally, the horizontal surface exerts a 25 Newton frictional force on the mass. What is the acceleration of the mass and its direction?
A Carnot engine works between two heat reservoirs at temperatures Thot= 314.0 K and Tcold= 225.0 K. What is its efficiency? How much heat does it reject during each cycle
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