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Question1
Two identical clocks, A and B, are at first synchronized at the bottom inside a vacuum chamber xed on the ground. Clock B is after that kicked upward, and rise and fall under gravity only inside the chamber. Its greatest height is 1 meter (relative to clock A). Clock A stays at rest relative to the ground. At what time clock B comes back to the position of clock A, which clock's reading is larger? By how many femto seconds? What if clock B reached a maximum height of 100 meters instead (still inside the chamber)? The gravitational acceleration is 9:8m=s2. Ignore effects of the spin of the earth.
Question2
Helicopter is ascending vertically with a speed of 5.35. At a height of 116 above Earth, a package is dropped from a window. How much time does it take for the package to reach the ground?
Three point charges are located on the positive x-axis of a coordinate system. Charge q1 = 2.0 nCis 2.0 cm from the origin, What is the net force
A 1.82-cm high object is placed 22.0 cm in front of a concave mirror with a 3.55-cm focal length. What is the position of the image
A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. What is the work done on the jet by the catapult
An 8m, 200 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.55, and ladder makes a 50.0° angle with the ground. How far up the ladder can an 800 N person climb before the ladde..
Find out the recoil velocity that the raft. At what height above the cannon should the net be placed in order to catch the daredevil.
What is the electric field at 9.4 cm from the central axis. What is the overall magnification of microscope.
How many excess electrons must be added to an isolated spherical conductor of diameter 38.0cm to produce an electric field of 1105N/C just outside the surface
A 1560kg car is travelling with a speed of 14.20 m/s. What is the magnitude of the horizontal net force that is required to bring car to a halt in a distance of 52.10 m.
The magnetic flux through a loop of wire is ?B = 5.7 T · m2. what is the smallest possible value for the area of the loop
In diving to a depth of 983 m, an elephant seal also moves 693 m due east of his starting point. What is the magnitude of the seal's displacement
A bullet leaves a standard 45-caliber pistol (5.0-in. barrel) at a speed of 262 m/s. If it takes 1 ms to traverse the barrel, determine the average acceleration experienced by the 16.2-g bullet within the gun and after that compute average force e..
What is magnitude of the electric field
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