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Q1. If you have a bar 48cm long and pinned (an axis) at one end, and you have to exert a force of 9.7N upward in the middle to keep it in equilibrium, what is the essential mass hanging on the far end (assume the bar itself is weightless)? Include units (1 pt).
Q2. If it takes 3 golf balls to equal the mass of one tennis ball, what weight of tennis balls do you require equalling the number of golf balls in one kilogram of golf balls?
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
What are the total displacement and angle of displacement
What is the terminal speed for an 84.00 skier going down a 38.0 degree snow-covered slope on wooden skis = 0.06? Assume the skier is 1.70 m tall and 0.500 m wide.
Find the difference in decibel levels β1 & β2 of a sound source is related to the ratio of its distances r1 & r2 and find the average power generated by the horn.
A baseball is bunted down the third-base line leaving the bat from a height of 0.850m with an initial velocity of 4.00m/s at an angle of 37.87° above horizontal.
What value of capacitance will ensure that an output voltage stays within 3 percent of the rated 22v . find an electric field between them and surface charge density on the plate.
The basic concepts in optics.
What is closing equilibrium temperature of the tin-water
The valuable coefficient of kinetic friction
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.
With the battery disconnected the compass needle points to the right, in the plane of the coil. The apparatus is located near equator, where the Earth's magnetic field B Earth is horizontal, with a magnitude of 4×10-5 tesla. (Presume that B Earth ..
What is corresponding free energy change
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