Calculus and Above

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A cart of mass 2.0 kg experiences an applied force to the
A cart of mass 2.0 kg experiences an applied force to the right of 1.5N if the force of friction acting on the cart is 0.50N left, determine the acceleration (in m/s^2) of the cart, (assume the cart m… read more
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A baseball traveling horizontally at a speed of 35 m/s hits
A baseball traveling horizontally at a speed of 35 m/s hits a bat and rebounds in the opposite direction. The time interval for the collision is about 0.010 s, and the mass of the ball is 0.140 kg. As… read more
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A) What is its period? ) Calculate its tangential velocity:
a) What is its period? b) Calculate its tangential velocity: c) Calculate its centripetal acceleration: d) If the mass of a rider is 55 kg, then what is the centripetal force needed for the person to … read more
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A 4.10-kg ball, moving to the right at a velocity of +3.15
A 4.10-kg ball, moving to the right at a velocity of +3.15 m/s on a frictionless table, collides head-on with a stationary 8.80-kg ball. Find the final velocities of (a) the 4.10-kg ball and of (b) th… read more
akch2002
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2) Two children are on a merry-go-round. Child A is located
Second opinion] 2) Two children are on a merry-go-round. Child A is located 1 meter from the center of the merry-go-round and child B is located at the edge of the merry-go-round 2.5 meters from the c… read more
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2) Two children are on a merry-go-round. Child A is located
2) Two children are on a merry-go-round. Child A is located 1 meter from the center of the merry-go-round and child B is located at the edge of the merry-go-round 2.5 meters from the center. Child A h… read more
akch2002
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1 A 4kg ball rolling at 2 m/s strikes a 5kg ball at rest,
1 A 4kg ball rolling at 2 m/s strikes a 5kg ball at rest, and ends up stopping completely. Calculate the velocity and direction of the 5kg ball after the collison.#2 A man with a mass of 70 kg is ridi… read more
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A 1kg ball traveling along the positive x axis at 5m/s
A 1kg ball traveling along the positive x axis at 5m/s collides with a 4kg ball. How fast would the 4kg ball move after the collision if the 1kg ball slows down to 2m/s?… read more
akch2002
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Three carts of mass 4.0 kg, 10 kg and 3.0 kg move on a
Three carts of mass 4.0 kg, 10 kg and 3.0 kg move on a frictionless horizontal track with speeds of 5.0 m/s, 3.0 m/s and 4.0 m/s, as shown below. The carts stick together after colliding. The final ve… read more
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A baseball (m=0.145kg) moving with an initial velocity of
A baseball (m=0.145kg) moving with an initial velocity of 15m/s to the right is struck by a bat and acquires a final velocity of 20m/s to the left. (a) What is the initial momentum of the ball? (b) Wh… read more
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An astronaut on a spacewalk becomes untethered from the ISS.
An astronaut on a spacewalk becomes untethered from the ISS. In order to propel herself back toward the space station, she throws her hammer with a speed of 5m/s. (a) In which direction, relative to t… read more
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What is the speed of an electron (in m/s) if its wavelength
What is the speed of an electron (in m/s) if its wavelength is (8.50x10^-2)nm? Proper sig figs and use scientific notation for answer. Note: Answer is assumed to be reduced to the highest power possib… read more
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A 15000 kg truck moving right at 25 m/s collides with and
A 15000 kg truck moving right at 25 m/s collides with and sticks to a 5000 kg car moving left at 5 m/s. Assume momentum is conserved and find the velocity after the collision.Two skaters with masses o… read more
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I have a witness to a bicycle accident who says he saw,
I have a witness to a bicycle accident who says he saw, through the windshield of his motor vehicle, a bicycle rider right in front of his motor vehicle operate his brakes at twenty miles an hour and … read more
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.) An anti- aircraft gun barrel and carriage, excluding
b.) An anti- aircraft gun barrel and carriage, excluding ammunition, together have a mass of 40,000 kg. The gun fires a shell of mass 80 kg with a velocity of 350 ms-1. The gun cylinders exert a total… read more
akch2002
Master's Degree
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1. Novak Djokovic can serve a tennis ball at around 210km/h.
1. Novak Djokovic can serve a tennis ball at around 210km/h. If a tennis ball has a mass of about 55g, and touches a tennis racket for approximately 0.008s, with what force does Mr. Djokovic strike th… read more
Ryan
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1.)A Bluray disk is orginally at rest. A mass of 0.23 kg
1.) A Bluray disk is orginally at rest. A mass of 0.23 kg is attached to the Bluray a distance of 0.1 meters from center of the Bluray. The tangential acceleration of the mass is 3.3 m/s2 and is const… read more
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Chap. 7, #10. (II) A 3800-kg open railroad car coasts along
Chap. 7, #10. (II) A 3800-kg open railroad car coasts along with a constant speed of 8.60 m/s on a level track. snow begins to fall vertically and fills the car at a rate of 3.50 kg/min. Ignoring fric… read more
akch2002
Master's Degree
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