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A 0.145-kg ball is thrown horizontally at +19.0 ????^ m/s and is hit back at -52.0 ????^ m/s. If the contact time between bat and ball is 13.0 ms, calculate:
a) The change in momentum of the ball
b) The average force between the ball and bat during contact
c) The change in kinetic energy of the ball
d) During the collision, the bat swings around by 120o . Calculate the magnitude of the torque applied to the bat, assuming conservation of energy.
A 4.57 MeV alpha particle from radium226Ra decay makes a head-on collision with a uranium nucleus. A uranium nucleus has 92 protons. What is the force on the alpha particle at the instant when it is at the distance of closest approach?
An archer wishes to shoot an arrow at a target at eye level a distance of 43.5 m away. what angle should the arrow make with the horizontal
Raw sewage is raised vertically by 5.49m in the amountof 1.89*106 liters each day. What is the power output of the shift station pump
Water at 68OF flowing at an average velocity of 9.7 ft/s through an old rusty pipe having an ID of 4.026 in. gave a net loss of head of 12.4 ft for a 51.5 ft.
A typical adult human lung contains about 330 million tiny cavities called alveoli. Assume the alveoli are spherical and a typical human lung is about 1.95 liters. Estimate the average diameter of a single alveolus
A plane accelerates from rest at a constant rate of 5.00m/s2 along a runway that is 1800m long. What is the time t needed to take off
Physics: How much time is required to row cross the river? How wide is the river?, A river man can row his boat at a speed of 2.5 m/s through still water. He wants to row directly across a river that has a current flowing at 1.5m/s
Two identical mandolin strings under 200 N of tension are sounding tones with frequencies of 523 Hz. How many beats per second are heard
A 36.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of 20.0 m. What is the centripetal acceleration of the child
The plate on the back of a certain computer scanner says that the unit draws 0.38A of current from a 120V , 60Hz line. Find the average square of the current
calculate the electric field at the center of a square 53.0 cm on a side if one corner is occupied by a 48.0 microc
Consider a parallel-plate capacitor constructed from two circular metal plates of radius R. The plates are separated by a distance of 1.7 mm. What radius must the plates have if the capacitance of this capacitor is to be 1.8 µF?
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