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The fastest pitched baseball was clocked at 46 m/s. If the pitcher exerted his force (assumed to be horizontal and constant) over a distance of 1.0 meter and a baseball has a mass of 145 gram,
Find what force did the pitcher exert on the ball during this record-setting pitch? (You need to find the acceleration to use Newton's second law. F=ma)
A solar concentrating heat exchanger system directs sunlight onto a long,straight pipe. The pipe recieves 153.616 btu/h per foot of length. What is the entropy production
A fish swimming in a horizontal plane hasvelocity vi =(4.00 i + 4.00 j) m/s at a point in the oceanwhere the position relative to a certain rock isri =(10.0 i + 4.00 j) m. After the fish swimswith constant acceleration for 21.0 s, itsvelocity is v..
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 11.0 cm, giving it a charge of -13.4 µC. Find the magnitude of the electric field just inside the paint layer
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. find the speed of the sled right before the team jumps on the sled
A fish appears to be below the surface of a pond (n=1.33). Calculate what is its actual depth
A Radio transmitter's RLC oscillator circuit initially stores all its energy in the capacitor then begins to oscillate. What average power (in watts) would a correctly tuned and phase-matched AC power supply need to generate in order to prevent this..
A proton is moving parallel to a uniform electric field. The electric field accelerates the proton and increases its linear momentum to 5.0*10-23 kgm/s from 1.5*10-23kgm/s in a time of 6.3*10-6 s. Decide is the magnitude of the electric field?
a 98-g piece of copper is heated in a furnace to a temperature tc. the copper is then inserted into a 150-g copper
A thin, light wire is wrapped around the rim of a wheel, as shown in the following figure. The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. The wheel is a uniform disk with radius 0..
Write at least one paragraph in which you define focal length, object and image distance and magnification. Explain the difference between real and virtual images
Crossfire was a popular board game in which players attempted to propel a "puck" forward towards their opponet's side by shooting metal balls at it. What is the maximum speed a player can impart to the puck
Your car's wheels are 65 cm in diameter and the wheels are spinning at an angular velocity of 107 rad/s. How fast is your car moving in kilometers per hour
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