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An electron in a cathode-ray tube is traveling horizontally at 2.60×109 cm/s when deflection plates give it an upward acceleration of 5.30 × 1017 cm/s^2.
a) How long does it take for the electron to cover a horizontal distance of 6.90 cm?
b) What is its vertical displacement during this time?
a wheel of radius r is rolling without slipping. the velocity of the point on the rim that is in contact with the
Two objects are maintained at constant temperatures, one hot and one cold. Two identical bars can be attached end to end, as in part a of drawing, or one on top of the other, as in part b. When either of these arrangements is placed between the hot a..
A peregrine falcon dives at a pigeon. The falcon starts with zero downward velocity and dives with the free-fall acceleration. how long does it take the falcon to intercept the pigeon
A reactor contains a neutron source that produces 95,000 neutrons per second. The reactor has a keff of 0.991. Calculate the stable total neutron production rate in the reactor.
An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck. What is the speed of the truck when they are abreast
A 200 gram ball is attached to a string that is 1 m long and swung in a vertical circle. What is the minimum veocity of the ball so that the string will not slack at the top
A physical pendulum consists of a meter stick (of mass 0.3 kg) that is pivoted at a small hole drilled through the stick a distance x from the 50 cm mark. The meter stick is then released from rest (at a small angle from vertical) and allowed to o..
Determine the post fault currents between all buses and from the generators.
A boy pulls due east with a force of 200 N on a box. A girl pulls due South with a force of 400 N. What is the magnitude of the net force on the box
a 2.83-kg object is thrown vertically upward from the surface of mars where the acceleration due to gravity is g1 3.71
A 10.5 kg uniform board is wedged into a corner and held by a string at a 50 degree angle. Determine the tension in the string. Hint: take torques about the corner and assume any length for the board.
The tip of a tuning fork goes through 480 complete vibrations in a time of 0.570s. Find the angular frequency. Find the period of the motion.
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