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You throw a ball upward with an initial speed of 4.4 {\rm m/s}. When it returns to your hand 0.90 {\rm s} later, it has the same speed in the downward direction (assuming air resistance can be ignored).
What was the average acceleration vector of the ball?
Gamma rays of photon energy 0.458 MeV are directed onto an aluminum target and are scattered in various directions by loosely bound electrons there. find the photon energy of the rays scattered in this direction
A cylinder of gas is at room temperature (20°C). What is the new pressure of the gas relative to its initial pressure
The displacement vectors 46.0 cm at 15.0° and 23.0 cm at 53.0° both start from the origin and form two sides of a parallelogram. Find the area of the parallelogram
A car with mass of 1000.0 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ignore air resistance. estimate the average mechanical power output of the engine
convert normal blood pressure readings of 120 over 80 mm hg to newtons per meter squared using the relationship for
An 8,000 rocket is shot straight up from the Earth's surface with the initial speed of 800 m/s. How high does it go.
solve the following problems. you must show all work for fullpartial credit. when complete attach a typed cover sheet
The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. Determine the specific heat of gold
Two billiard balls have velocities of 1.50 m/s and -1.0 m/swhen they meet in an elastic head-on collision. What is the final velocity of the first ball after collision
choose one part of the photo-electric experiment that cannot be explained by assuming that light is a wave. why do we
When a voltage difference is applied to a piece of copper wire, a 5.0 mA current flows. If the copper wire is replaced with a silver wire with twice the diameter of the copper wire
A lamp (R = 148 ), an electric heater (R = 23 ), and a fan (R = 48 ) are connected in parallel across a 117 V line. What is the voltage across the fan
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