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A pitcher pitches a baseball of mass 0.20 kilogram. The baseball arrives at home plate with a speed of 40 m/s and is batted directly back to the pitcher with a return speed of 50 m/s.
Obtain the magnitude of the change of momentum of the ball?
If the bat remains in contact with the ball for 0.12 second, estimate the average force of the bat on the ball?
An electron with mass 9.11×10-31 kg moves with a speed of 2.00×106 m/s in a circle of 2.83 cm radius under the influence of a magnetic field. What is the radius of the proton's orbit
When monochromatic light shines vertically on a soap film (n = 1.33) with air on each side, the second smallest nonzero film thickness for which destructive interference of the reflected light is observed is 296nm. What is the vacuum wavelength of th..
Asquare loop of wire surrounds a solenoid. The side of the square is0.1 m, while the radius of the solenoid is 0.025 m. The square loop has a resistanceof 30 W. The solenoid has 500 turns and is 0.3 m long.
The mass per unit length of the cord is 1.24 e-2 kg/m, so the mass of the cord is negligible compared to the mass of block. The cord is being vibrated at a frequency of 167 Hz (vibration source not shown in the drawing).
A Fabri-Perot interferometer is to be used to resolve the mode structure of a He-Ne laser operating at 632.8 nm. What is the coefficient of finesse of the instrument
If the distance between two slits is 0.031 mm and the distance to a screen is 2.50 m, find the spacing between the first- and second-order bright fringes for yellow light of 500 nm wavelength.
In the following exoergic nuclear reaction, 12D + 13T ? 01n + 24He. what percentage of the initial mass is converted into energy
A garage lift has input and lift(output)pistons with diameters of 10cm and 30cm respectively. Find the force which must be exerted on the input piston to hold this weight
a hockey puck has an initial velocity of 44 ms and a final velocity of 31 ms. a if it travels 25 m during this time
A star of mass 2.0 1028 kg that is 4.6 x 1020 m from the center of a galaxyrevolves around that center once every 4.6 x 108 years. estimate the number of stars in the galaxy
Find the minimum initial speed of a projectile in order for it to reach a height of 1961 km above the surface of the earth
A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 8.60 m/s at an angle of 25.0° below the horizontal. Find the height from which the ball was thrown
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