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A river flows due east at 1.34 m/s. A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 9.8 m/s due north relative to the water.
(a) What is the velocity of the boat as viewed by an observer on the shore?
(b) If the river is 352 m wide, how far downstream is the boat when it reaches the north shore?
During Charlie's golf drive, the angular velocity of his club is zero at the top of the backswing and 20 rad/s, What is the linear velocity of the club head just before impact with the ball
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 62° above the horizontal. How high above the ground is the highest point that the skateboarder reaches
A grating has exactly 7800 lines uniformly spaced over 2.63 cm, What is the expected angle for the third-order maximum of the green line
You have a compound microscope with a barrel of length 157 mm. Find the total angular magnification of the microscope for a person whose near point is 25.0 cm away
Two blocks hang from either end of a massless rope that runs over a pulley, treated as a thin solid disk, (An Atwood's Machine), Find the unknown mass of the block
What is the angular separation of two spectral lines of wavelengths 439 nm and 395 nm formed in order m=2 with a 367 line/mm grating
A rescue helicopter lifts a 85 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the person's weight
A hypodermic needle is attached to a syringe with a plunger of diameter 1.6 cm. What is the minimum force must be applied to the plunger
An ion with charge q is distance r from a molecule with polarizability (alpha). Find an expression for the magnitude force F
A partly-full paint can has 0.55 U.S. gallons of paint left in it. (a) What is the volume of the paint, how thick is the layer of wet paint
A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 80.6 m/s at ground level. For what time interval is the rocket in motion above the ground
An aircraft weighing 803 N is accelerated at 10 m/s2 for 9 seconds, at which time the aircraft launches. How much work was done on the aircraft
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