Physics, 28.06.2019 08:50 Naysa150724
Abatter hits a softball over a third baseman's head with speed v0 and at an angle θ from the horizontal. immediately after the ball is hit, the third baseman turns and runs at a constant velocity v=7.000m/s, for a time t=2.000s. he then catches the ball at the same height at which it left the bat. the third baseman was initially l=18.00m from home plate (the location where the ball was hit from).express the initial speed to four significant figures in meters per second? find the angle ? in degrees.? find the components vx and vy of the ball
Answers: 1
Physics, 21.06.2019 22:50
An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?
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Physics, 22.06.2019 09:50
If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?
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Physics, 22.06.2019 10:00
Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n
Answers: 1
Abatter hits a softball over a third baseman's head with speed v0 and at an angle θ from the horizon...
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