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1. A block is suspended from a string connected to a balance. While in air, the scale reads 350 N. When the block is immersed in water the scale reads 280 N. When the block is immersed in oil, the reading becomes 300 N.
a. What is the mass of the object (in kilograms)?
b. What is the buoyancy force on the object when immersed in water?
c. What is the density of the object?
d. Calculate the density of the oil.
e. What is the specific gravity of the oil?
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Velocity and time for the moving particle.
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n a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.6 ? 10-17 N during the first 1.9 cm of the tube's length, Find the speed of the electrons when they hit the screen
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 10.9 m/s due north relative to the water. If the river is 362 m wide, explain how far downstream is the boat when it reaches the north shore?
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