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A baseball leaves a pitcher's hand at a speed of 10.0 m/s. The mass of the baseball is .10 kilogram. You can neglect air resistance. Obtain how much work has the pitcher done on the ball in throwing it?
A 1.6-kg book is at rest on a wooden board inclined at 12 degrees. Find the magnitude of each force
The patellar tendon attaches to the tibia at the tibial tuberosity. The tibial tuberosity is 8 cm from the center of the knee joint. how large is the force in the patellar tendon
A 1.35 kg block of wood sits at the edge of a table, 0.782 m above the floor. A 0.0105 kg bullet moving horizontally with a speed of 715 m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
The Cosmic Background Radiation Outer space is filled with a sea of photons, created in the early moments of the universe. What is the peak frequency of this radiation
A power supply that provides a voltage of 42.0 V·sin(362·t), where t is in seconds, is connected across a resistor R = 119 ?. Calculate the average power dissipated in the resistor
In a common lecture demonstration of wave pulses, If the tubing is given a transverse blow at one end, how long will it take the resulting pulse to reach the other end
A mercury thermometer has a bulb of volume 0.100 cm3 at 10oC. The capillary tube above the bulb has a cross-sectional area of 0.012 mm2, How much will the mercury rise when the temperature rises by 30oC
An express subway train passes through an underground station. It enters at t = 0 with an initial velocity of 21.5 m/s, What is the velocity of the end of the train as it leaves
a 100v dc battery, a resistor and a capacitor are connected in series. The capacitor is initially uncharged. estimate the capacitance of the capacitor
An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gasses called air. how many gas molecules does the flask contain
Air flows steadily through an adiabatic turbine, entering at 1 Mpa, 500 degrees C, and 120 m/s and leaving at 150 kPa, 150 degrees C, and 250 m/s. The inlet area of the turbine is 80 cm2.
find an article on a current event related to macroeconomics. briefly summarize the article and state how a concept in
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