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A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 1.81 m/s2.
(a) What is the acceleration of the bolt relative to the train car?
magnitude?
direction to the south of the downward direction ?
(b) What is the acceleration of the bolt relative to the Earth?
direction to the south of the downward direction
(c) Describe the trajectory of the bolt as seen by an observer fixed on the Earth.
Find out the time that the arrow spends in the air.
The lengths of the three telescopes are LA = 434 mm, LB = 653 mm, Find the angular magnification of each telescope
Consider two closely spaced and oppositely charged parallel metal plates. The plates are square with sides of length L and carry charges Q and -Q on their facing surfaces. What is the magnitude of the electric field in the region between the plate..
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A Carnot engine whose high-temperature reservoir is 400K takes in 520 J of heat at this temperature in each cycle, compute the temperature of the low-temperature reservoir
an oxygen ion O2- is moving with a speed of 322 m/s in a direction perpendicular to a magnetic field of magnitude B, what is B
A resistance R and a 4.7-H inductance are in series across a 60-Hz ac voltage. The voltage across the resistor is 22 V, What is the ac input voltage
Ignoring the heat lost along the length of the poker, find out the amount of heat conducted from one end of the poker to the other in 3.0 s.
Potassium is an essential element that normally comprises about 0.30% of a person's body mass. What's the potassium activity in a 69kg person
The tortoise can run with a speed of 0.1 m/s and the hare can run with a speed of 2 m/s. They start their race at the same time, but the hare, feeling confident, stops along the way for a two minute nap, and the tortoise wins by the length of his ..
At this point, he throws a forward pass 45.0 yards straight downfield perpendicular to the line of scrimmage. Illustrate what is the magnitude of the football's resultant displacement?
a ball is thrown upward from the roof of a building, passes the roof going down three seconds later, how fast did the ball strike the ground
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