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A moving particle encounters an external electric field that decreases its kinetic energy from 8920 eVto 7400 eV as the particle moves fromposition A to position B. The electric potentialat A is -52.0 V, and the electricpotential at B is +26.9 V. Determine the charge of the particle. Include the algebraic sign (+or −) with your answer.
An object that is launched straight up from the ground reaches maximum height H and falls straight back down to the ground, Express the average speed over the entire trip as a function of H and T
Three objects with masses, m1 = 6.0 kg, m2 = 10.0 kg, and m3 = 15.0 kg, are attached by strings over frictionless pulleys as indicated. The horizontal surface is frictionless and the system is released from rest. Using energy concepts, find out th..
A rock weighing 8528 N rock with a volume of 24 L is completely submerged in mercury. The density of mercury is 13.6 kg/L. Determine the buoyant force on the rock
A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 4 kg and a cross-sectional area of 40 cm2. Determine the pressure inside the cylinder
A laser used in eye surgery emits a 3.08 mJ pulse in 1.04 ns, focused to a spot 32.4 um in diameter on the retina. Calculate (in SI units) the power per unit area at the retina
A solenoid with 1200 turns per meter has a diameter of 9.00 cm. Find the magnitude of the magnetic flux through the loop
My professor today stated that if a ball was to fall a certain height, then the work done by gravity on the ball would equal the work done by the ball's equal and opposite gravitational pull. By W=F*d, this means that the earth must travel the ..
An 80.7-kg jogger is heading due east at a speed of 1.950 m/s. A 53.60 kg jogger is heading 33.1° north of east at a speed of 2.89m/s. compute the magnitude (enter first) and direction of the sum of momenta of the two joggers.
It is proposed that future space stations create an artificial gravity by rotating. What rotation period will provide "normal" gravity
On another planet the simple pendulum consisting of a 0.154 kg mass suspended on a 1.20 m long string has a period of 3.860 seconds. What is acceleration on this planet.
As the wood flap rotates at 65.9rad/sec, it hits a switch and turns on a heater. The heater warms the bottom of a 2:0 m rod. how much has the rod grown
Three negative charges of equal magnitude q are placed along a straight line, Find the electrostatic force on middle (second) charge
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