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Just before a baseball is hit by a bat, it has a velocity of 30 m/s, 15A??o below the +x axis. After it is hit by the bat, it has a velocity of 60 m/s, 30A??o above the -x axis. If the bat is in contact with the ball for 4 ms, what is the magnitude of the average acceleration of the ball while in contact with the bat? Please show the work that leads to the answer.
A worker pushed a 27kg block 9.2 m along a level floor atconstant speed with a force directed 32o below thehorizontal. find the increase in thermal energy of theblock-floor system
The third floor of a house is 10.00 m above street level. How much work is required to move a 170kg refrigerator to the third floor.
a water jet is ejected from the nozzle of a fountain with speed vo 12 ms. letting beta 33 degrees determine the rate
If the heat necessary to warm 545 g of water from a temperature of T1 = 25.0 °C to T2 = 81.0 °C, what would be the speed of water
A harmonic wave travels in a wire with amplitude 2.54 mm,wavelength 1.34 m, and frequency 487 Hz. What is the speed with which the wave travels
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, isothermal expansion until its pressure is reduced to 94 kPa. (a) Find the work done by the gas. J (b) Find the heat added to the gas during the expans..
1. if the total electric current reaching the earths surface is nearly constatnt at 1000 a approximately how much
Discover the electric field for a uniformly charged solid sphere of radius R and charge density g both inside and outside the sphere.
A photon of red light (wavelength = 710 nm) and a Ping-Pong ball (mass = 2.20 x 10-3 kg) have the same momentum. At what speed is the ball moving
Consider a makeup mirror that produces a magnification of 1.7 when a person's face is 12.5 cm away. What is the focal length of the makeup mirror in m
A narrow beam of light with wavelengths from 450 nm to 700 nm is incident perpendicular to one face of a 32.00, What is the angular spread of the beam after passing through the prism
two stationary positive point charges charge 1 of magnitude 3.35 and charge 2 of magnitude 1.55 are separated by a
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