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An iron tower in is 340 meters tall on a cold day (=-8l4 degrees Celsius). What is the hight of the tower on a hot day whe the tempeture is 32.4 degrees Celsius? Record you answer to two decimal places.
If the trough is being filled with water at the rate of 0.3 m3/min explain how fast is the water level rising when the water is 10 cm deep?
What is the electric field strength between the disks? A proton is shot from the negative disk toward the positive disk. What launch speed must the proton have to just barely reach the positive disk?
Consider the video tutorial you just watched. Suppose that we repeat the experiment, but this time we replace the original 56- magnet with a more powerful magnet of the same mass.
A 0.060 kg handball is thrown straight toward a wall with the speed of 14 m/s. It rebounds straight backward at a speed of 6.5 m/s. If the ball is in contact with wall for 3.0 ms, what average force is exerted on the wall by the ball.
We have a container of a hot ideal monatomic gas. The volume of the container is 25 liters. The temperature of the gas is 398 C, Find the change of internal energy of the gas
Three point charges of 2.0 ? C, 4.0 ? C, and 6.0 ? C form an equilateral triangle with each side 2.9cm Find the electric potential energy of this distribution
A small piece of Styrofoam packing material is dropped from a height of 1.50 m above the ground. Until it reaches terminal speed, magnitude of its acceleration is given by a = g - bv. After falling 0.40 m, the styrofoam effectively reaches its ter..
A golfer drives a 0.046kg golf ball from an elevated tee, giving the ball an initial horizontal velocity of 45 m/s. (a) what is the magnitude of the average force exerted by the club on the ball if the contact time for the golf club on the ball du..
A 52-kg pole vaulter running at 13 m/s vaults over the bar. Her speed when she is above the bar is 1.0 m/s, determine her altitude as she crosses the bar
A car is travelling at 24 m/s while the driver spots a large pothole in the road a distance 35 m ahead. She immediately applies her brakes. If her acceleration is -4.30m/s2, does she manage to stop before reaching pothole? What is the stopping dis..
An ultrasonic transducer, of the type used in medical ultrasound imaging, is a very thin disk (m=0.10g ) driven back and forth in SHM at 1.0 MHz by an electromagnetic coil, What is the maximum oscillation amplitude that won't rupture the disk
What is the maximum positive potential energy. Write down an expression for U as a function of x, with U in joules and x in meters.
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