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A swimmer, capable of swimming at a speed of 0.8 m/s in still water (i.e., the swimmer can swimwith a speed of 0.8 m/s relative to thewater), starts to swim directly across a 3.0 km wide river. However, the current is 0.91 m/s,and it carries the swimmer downstream.
a) How long does it take the swimmer to cross the river?b) How far downstream will the swimmer be upon reaching the otherside of the river?A bullet is fired from a rifle that is held 2.3 m above the ground in a horizontal position. Theinitial speed of the bullet is 1110 m/s.
a) Find the time it takes for the bullet tostrike the ground.b) Find the horizontal distance traveled by the bullet.
Geologists measure conductive heat flow out of the earth by drilling holes (a few hundred meters deep) and measuring the temperature as a function of depth, what rate is the earth losing heat via conduction?
A large circus ride has a centripetal acceleration at 6.0 m/s2. If the circular ride has a radius of 11.0 m, what is its velocity at the edge
Water flows at 5.0;{rm L}/{rm s} through a horizontal pipe that narrows smoothly from 10 cm diameter to 5.0 cm diameter. A pressure gauge in the narrow section reads 50 kPa. What does the other pressure gauge read.
A transformer has the voltages 152 Vpri and 50 Vsec. A current 4.0 mA is flowing in the primary. What is the current flowing in the secondary
A solid spherical mass M2 = 30 kg and radius 20 cm is concentric with a spherical shell M1 = 60 kg, determine the gravitational force on mass m
In a ballistics test, a 22.0g bullet traveling horizontally at 1300m/s goes through a 30.0cm -thick 350kg stationary target and emerges with a speed of 900m/s, How long is the bullet in the target
A beam of red light whose frequency is 4.29x10^14, passes through a piece of dense flint glass (n=1.66) in 40x10^-12 seconds, Find the thickness of the glass
Largest Raindrops Atmospheric scientists studying clouds in the Marshall Islands have observed what they believe to be the world's largest raindrops, with a radius of 0.52 . How many molecules are in these monster drops?
Find the flux of Earth's magnetic field of magnitude 5.00 cross 10-5 T through a square loop of area 20.0 cm2
Assume that, as lying on a beach near the equator watching the Sun set over a calm ocean, you start a stopwatch just as the top of the Sun disappears. You after that stand, elevating your eyes by a height H = 1.90 m.
compute the distance x the spring was compressed.
Bowling balls are roughly the same size, but come in a variety of weights. Given its official circumference of roughly 27.4 inches, calculate the heaviest bowling ball
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