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You are with 21 other people on a boat at rest in frictionless water. The group's total mass is 1638 kg , and the boat's mass is 1.2×104 kg. The entire party walks the 6.9 m distance from bow to stern. How far does the boat move? (d=?cm) Express your answer using two significant figures.
a detector of a fixed size measures the intensity of light emitted from two different sources. one emits spherical
For tests using a ballistocardiograph, a patient lies on a horizontal platform that is supported on jets of air. determine the recoil velocity
An inventor claims to have devised a cyclic engine which exchanges heat with reservoirs at 300 K and 540 K, and which can produce 450 J of work per 1000 J of heat extracted from the hot reservoir. Is his claim feasible.
Estimate the speed in mph with which water comes out of a garden hose using your past observations of water coming out of garden hoses and your knowledge of projectile motion.
A sled weighs 10.0 kg. It is held in place on a frictionless 20.0-degree slope by a rope attached to a stake at the top of the slope. Find the tension in the rope if it is parallel to the slope
A 1.3-kg block of ice is initially at a temperature of -6.0%u2218C. If 3.0*10^5 J of heat are added, what is the final temperature
Three polarizing filters are stacked with the polarizing axes of the second and third at 30 and 75.0, find the intensity of light emerging from each filter
two narrow slits are illuminated by a laser with a wavelength of 545 nm. the interference pattern on a screen located x
A block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. It has a mass of 213 g. When placed in water, the block sinks. What volume of water did it displace.
A 0.0330-m 3 container is initially evacuated. Then, 6.30g of water is placed in the container, and, after some time, all of the water evaporates. If the temperature of the water vapor is 386 K, what is its pressure?
A baseball pitcher can throw a ball with a speed of 40. He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a lazy 30. What is the speed of truck.
A spaceship travels at a constant speed from earth to a planet orbiting another star. How far away is the planet, according to observers on earth
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