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A baseball pitcher throws a baseball horizontally at a linearspeed of 42.5 m/s. Before being caught, the baseball travelsa horizontal distance of 16.5 m and rotates through an angle of 49rad. The baseball has a radius of 3.67 cm and is rotatingabout an axis as it travels much like the earth does. What is the tangential speed of a point on the "equator" of thebaseball?
One summer day, you decide to make a popsicle. You place a popsicle stick into a 9-oz glass of orange juice, How long does it take your popsicle to freeze
A woman stands on a scale in a moving elevator. Her mass is 55.0 kg, and the combined mass of the elevator and scale is an additional 755 kg. What does the scale read (in N) during the acceleration
A piece of Nichrome wire passes a current of 0.933 A when a potential of 1.64 Volts is applied. What is the resistance of the wire
The space shuttle is in a 150km -high circular orbit. It needs to reach a 590km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
A woman stands on a scale in a moving elevator. Her mass is 60.9 kg, and the combined mass of the elevator and scale is an additional 819 kg. Starting from rest, the elevator accelerates upward. Through the acceleration, the hoisting cable applies a ..
A swimmer looks upward from the bottom of a 3.5-m-deep swimming pool. How far from the swimmer does the board appear to be
A block with mass m = 7.0 kg is attached to two springs with spring constants kleft = 37.0 N/m and kright = 48.0 N/m. The block is pulled a distance x = 0.21 m to the left of its equilibrium position and released from rest. 1) What is the magnitud..
A particular nucleus of the element plutonium contains 94 protons and 150 neutrons. What is the magnitude of the force from the nucleus on a single electron that is at a distance of 0.563 × 10-12 m from the plutonium nucleus.
A 0.400-kg ball approaches a very massive wall at 20.0 m/s perpediculat to wall and rebounds with 70.0% of its inital kinetic energy. find the magnitude of the change in momentum of the wall
If an automobile rounds this curve at 30 {rm m/s}, illustrate what is the minimum coefficient of static friction between tires and road needed to prevent skidding?
A charge of +1.00 10-6 C is located 29 cm from a charge of -4.00 10-6 C. What is the magnitude of the force exerted on each charge
A river narrows at a rapids from a width of 15m to a width of only 6.0m. The depth of the river before the rapids is 2.7m ; the depth in the rapids is 0.70m. Find the speed of water flowing in the rapids
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