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In a proton accelerator a moving proton hits a solid target and stops. As a result an electron-positron pair is created at rest. The proton mass is 1.76E-27kg and the electron and positron have the same masses of 9.1E-31kg. What is the initial velocity of the proton?
An artillery shell is fired with an initial velocity of 300 m/s at 47.5° above the horizontal. To clear an avalanche, it explodes on a mountainside 47 s after firing. What is the x and y components of the shell where it explodes, relative to its f..
A spring with a spring constant k of 18 N/m is stretched a distance of 12 cm (0.12 m) from its original unstretched position
A hollow sphere of inner radius 6.2 cm and outer radius 7.2 cm floats half-submerged in a liquid of density 775 kg/m3. What is the mass of the sphere
Rusting of an iron nail is an example of a change of phase, true or false? This seems like a tricky question, because it is a chemical change-but would that be considered a change of phase?
A pair of speakers separated by 0.820 m are driven by the same oscillator at a frequency of 652 Hz. An observer originally positioned at one of the speakers begins to walk along a line vertical to the line joining the speakers.
A small wooden block with mass 0.750KG is suspended from the lower end of a light cord that is 1.60m long. What is the initial speed of the bullet
A 1.07 µF capacitor is connected in series with a 1.90 µF capacitor. Find the equivalent capacitance of the two capacitors
A satellite in Earth orbit has a mass of 91 kg and is at an altitude of 1.97 x 10^6 m. What is the potential energy of the satellite%u2013Earth system
An experimental space station consists of a large rigid rod with length L = 100 m and mass M = 10,000 kg, which rotates about an axis perpendicular to its length and through its center. Two spherical compartments, each containing quarters, laborat..
A Young physicist wants to send radio signal to two separate cities (A and B); however, the signals being sent to one city should not be perceived in the second city and vice versa. Determine the distance d between the two antennas, the phase diff..
Suppose that a binary-star system consists of two stars of equal mass. What is the mass of each
In a slow-pitch softball game, a 0.200 kg softball crossed the plate at 16.0 m/s at an angle of 45.0° below the horizontal. Determine the impulse applied to the ball
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