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1. Lubbock Lou and his Jughuggers are outside lawn bowling. Since they are a bit unclear of the concept, they wind up using a lot of different rolling shapes. Among them are a disk, a hoop, a solid sphere, and a hollow sphere all (amazingly) with the same mass and radius. All 4 are also rolling on a horizontal surface without Slipping. The centers of mass of all four, for some length of time, move at the same speed v. Which one has the greatest total kinetic energy (translational KE plus rotational KE) or are they all the same? Explain.
2. Dr. Julius Strangepork has created a maguffin that has accidentally increased global warming a LOT. All of the ice trapped at the north and south poles of the Earth immediately melts, redistributing the water evenly over the Earth's surface. What happens to the length of the Earth's day? Explain.
A force with a magnitude of 452N is used to bring an object with a mass of 56.0 kg moving at a velocity of 155m/s. How long will it take to bring the object to a full stop.
If the contact time with the sidewalk is 1800s, what is the magnitude of an average force exerted on the superball by the sidewalk.
A proton is shot at 8 × 107 m/s toward a gold atom, with a mass 197 times that of the proton, What is the recoil speed of the gold nucleus
A beam of protons is moving toward a target in a particle accelerator. This beam constitutes a current whose value is 0.51A. How many protons strike the target in 12 seconds
A softball of mass 0.220kg that is moving with a speed of 8.5m/s collides head-on and elastically with another ball initially at rest. Calculate the mass of the target ball
A 6.6-kg rock and a 4.7 × 10-4-kg pebble are held near the surface of the earth. Determine the magnitude of the gravitational force exerted on each by the earth
An LRC circuit has L = 4.41 mH and R = 2.12 kΩ. Find what will be the maximum current at resonance
Air is trapped above liquid ethyl alcohol in a rigid container. If the air pressure above the liquid is 1.10 atm, determine the pressure in the bulb inside a bubble 4.0 m below the surface of the ethanol.
If a chain of 35 identical short springs linked end-to-end has a stiffness of 400 N/m, what is the stiffness of one short spring
Two very long uniform lines of charge are parallel and are separated by 0.270m. Each line of charge has charge per unit length 5.20 µC/m. What magnitude of force does one line of charge exert
Two identical tubes are open at the top and are connected at the bottom via a tube of negligible volume and a valve which is closed. Determine the fluid level in the left container
A circuit similar to the one you will b e measuring has a current of 0.1 A flowing when the voltage is 2. 5 V, What color code does the res istor probably have
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