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a) What is the potential energy of a comet of mass m around a star of mass M if it is in elliptical orbit that has a pericenter at a distance R and an apocenter at 4R?b) What is the total energy of the comet?
If astronauts could travel at v = 0.910c, we on Earth would say it takes (4.20 / 0.910) = 4.62 years to reach Alpha Centauri, 4.20 light-years away. How much time passes on the astronauts' clocks
A particle undergoes two displacements, measured from the positive x-axis, with counter- clockwise positive, find the magnitude of the second displacement in meters
A parallel plate capacitor has a separation between its plates of 1.0 mm. There is a dielectric with a dielectric constant of 2.1 fi ling the gap. what is the area of one of the capacitor plates
Suppose a manufacturing plant has an average sound intensity level of 97.0 dB created by 25 identical machines. Find the total intensity created by all the machines
An electron traveling at v = 1.20 x 10^5 m/s passes from (2.00 m, 1.00 m, 3.00m) to (7.00 m, 3.00 m, 1.00 m), What is the force that electron experiences the instant
a horizontal pipe narrows from a radius of .250 m to .100m if the speed of the water in the pipe is 1.00 m/s in the larger-radius pipe, what is the speed in the smaller pipe
q1. a persons heart and head are 1.2m and 1.7m above the feet respectively. find out the potential energy associated
A defibrillator consists of a 15.3-µF capacitor that is charged to 8.4 kV. (a) If the capacitor is discharged in 1.0 ms, how much charge passes through the body tissues? (b) What is the average power delivered to the tissues?
A potential difference of 12 V is placed across the ends of a wire of resistance 2.625times10-3 Ohm. If the density of electrons in the wire is 6times1028 electrons/m3 and the cross sectional area of the wire is 2times10-5 m2, what is the drift veloc..
A bat crashes into the vertical front of an accelerating subway train. what is the minimum acceleration of the train
A 10.2 cm diameter loop of wire is initially oriented perpendicular to a 1.6T magnetic field. The loop is rotated so that its plane is parallel to the field direction in 0.21 seconds. What is the avg induced emf in the loop?
A 1.00kg black (m) us on a frictionless plane inclined at 20 degrees. The block is attached to a spring (k = 25N/m) that is fixed to a wall at the bottom of the incline. how far does it drop before coming to rest
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