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Which of the following will reduce the time constraint in an RC circuit? a-Increasing voltage of the battery b-adding an additional resistor in parallel with the first resistor c-increasing the dielectric constant of the capacitor d-adding an additional 20 M of wire between the capacitor and resistor e-none of the above
A spherical hydrogen-filled balloon is used to lift a load of 5705 N (in addition to the weight of the hydrogen). Find the minumum necessary radius for the balloon
If an ocean wave strikes the land every 12 seconds and the horizontal distance between adjacent crests and troughs is 4 m, what is the average speed of the wave
Calculate the internal energy of one mole of helium gas at a temperature of 260K. Assume ideal gas behavior
A slide projector has a lens of focal length 150 mm. An image of 100 cm by 100 cm is formed of a slide whose dimensions are 50 mm by 50 mm
When Albert turns on his small desk lamp, the light falling on his book has intensity Io. When this is not quite enough he turns the small lamp off, What is the intensity of light falling on the book
As you bounce a tennis ball of mass 5.10 10-2 kg off a wall, its velocity changes from vx = 10.8 m/s to vx = -7.9 m/s. Find the impulse applied to the ball
As part of a safety investigation, two 1900 {rm kg} cars travelling at 19 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 {rm s} to stop, and (b) car that hits a..
Positronium is a hydrogen atom with the proton replaced by a positron (like electron, but w/ positive charge). Calculate E1 for positronium.
A 0.04-kg baseball traveling in a horizontal direction with a speed of 16 m/s hits a bat and is popped straight up with a speed of 15 m/s. what was the average force of the bat on the ball
Two capacitors are connected in series. Let 3.00?F be the capacitance of first capacitor, 5.50?F the capacitance of the second capacitor, Calculate the potential difference across each capacitor
A light string can support a stationary hanging load of 24.6 kg before breaking. What range of speeds can the object have before the string breaks
A ball is thrown from a point 1.0 m above the ground. The initial velocity is 19.5 m/s at an angle of 27.0° above the horizontal. Find the maximum height of the ball above the ground
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