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Q1. A 260 wooden raft floats on a lake. When an 80 man stands on the raft, it sinks 5.0 deeper into the water. When he steps off, the raft vibrates for a while.
What is the frequency of vibration?
Q2. New York's 300 m high Citicorp® Tower oscillates in the wind with a period of 6.80 s. Compute its frequency of vibration.
What is the force between two balloons with a negative charge of 2.6 x 10-10C if the balloons are 10.0 cm apart?
A weather vane initially at rest has a moment of inertia of 0.116 kg · m2 about its axis of rotation. Find the angular velocity of the weather vane just after it is struck
The highest rotary speed ever attained was 2010 m/s (4500 mph). The rotating rod was 15.2 cm (6 in.) long. What is the period of rotation of the rod
A 0.150kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.710m/s, Find the magnitude of the final velocity of the 0.150 kg glider
A bicycle tire with a radius of 0.42 m has a linear velocity of 2.6 m/s and an tangential acceleration of - 1.0 m/s2. What is the angular velocity of the tire
a house is heated by 24 kq electric furnace using resistance heating if 9 J are used. How long was the furnace running in an acerage Jan day
How many atoms are there in a cubic centimeter of a solid and what is the velocity of the motorist relative to the police car and what is the velocity of the police car relative to the motorist?
Water moves through a constricted pipe in steady, ideal flow. At the lower point the pressure is 1.65 105 Pa and the pipe radius is 2.60 cm. Find the volume flow rate through the pipe
Changes in wind and tide made average speed on return trip 3 mph slower than the speed on the way out. If the total time of the trip took 9 hours find speed of both the going and the return trip.
A uniform plank of length 5.9 m and weight 212 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support .To what distance x can a person who weighs 443 N walk on overhanging part of the plank before it just begins ..
Three identical point charges each of charge q are located at the vertices of an equilateral triangle, Find a symbolic expression for the electric potential at the center of the triangle
You have a spring attached to the bottom of a container. The spring is aligned vertically. The container is filled with water (density 1.0 x 103 kg/m3). How much does the block compress the spring
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