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An outfielder throws a 0.125-kg baseball at a speed of 75.0 m/s and an initial angle of 30.0°. What is the potential energy of the ball at the highest point of its motion?
A sample of dry air has a temperature of 273K, a volume of 4 m^3 and a pressure of 2 atmospheres, Sketch the process on a P-V diagram and mark the final values for pressure and volume after each change, Calculate the total work done.
The amount of charge that passes through a filament of a certain lightbulb in 1.76 s is 1.63 C. Find the current in the bulb
A 4.0 kg ball is traveling at 3.0 m/s and strkes a wall. The 4.0 kg ball bounces off the wall with a velocity of 4.0 m/s. determine the average force on the ball
Object of masses: mass1= 4.000 kg and mass2=9.000 kg, are connected by a light string that passes over a frictionless pulley. Determine the acceleration of each object
What is the fundamental minimum uncertainty in a dimension of the position of the electron in the previous problem if its momentum is simultaneously deliberate to a precision of plus or minus one percent (two percent total)?
A thermodynamic system undergoes a process in which its internal energy increases by 490 J. At the same time, 250J of work is done on the system. Find the energy transferred to or from it by heat?
If the heat is given by the following function Q=8t3+(1/t), calculate the change entropy between temperatures 10K and 100K.
determine the angle below the horizontal that you must aim your spear gun in order to catch dinner. Suppose the spear gun barrel is 1.70 m above the water surface, the fish is 1.40m below surface, and the spear travels in a straight line all the w..
Let's consider how to reduce errors in the ultrasound experiment. We describe a frequency (40 kHz) and measured wavelength. What wavelengths should we measure if we change the frequency to 345 Hz, 3,450 Hz or 345,000 Hz?
When you blink your eye, the upper lid goes from rest with your eye open to totally covering your eye in a time of 0.024s. Estimate the distance that the top lid of your eye moves through a blink. What is the acceleration of your eyelid? Assume it to..
An RLC circuit with R = 28.7 ohms, = 348 mH, and = 41.4 microfarads is connected to an ac generator with an rms voltage of 27 V. Determine the average power delivered to this circuit when the frequency of the generator is half the resonance frequency
Old naval ships fired 14 kg cannon balls from a 250 kg cannon. It was very important to stop the recoil of the cannon, since otherwise heavy cannon would go careening across the deck of the ship. In one design, a large spring with spring constant 2..
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