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A swimmer, capable of swimming at a speed of 1.0 m/s in still water (i.e., the swimmer can swim with a speed of 1.0 m/s relative to the water), starts to swim directly across a 2.1-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?
________s
(b) How far downstream will the swimmer be upon reaching the other side of the river?
______m
A 5 uF capacitor is initially charged to a potential of 16 V. It is then connected in series with a 3.75 mH inductor.
a house is heated by 24 kq electric furnace using resistance heating if 9 J are used. How long was the furnace running in an acerage Jan day
The angular momentum of Earth is constant
A 7.5cm diameter circular loop of wire is in a 0.76T magnetic field. The loop is removed from the field in 0.21s, What is the average induced emf
A ball is kicked with initial velocity of 14.9 m/s in the horizontal direction and 15.7 in the vertical direction. At what speed does the ball hit the ground
A C=35 pF parallel plate cApacitor has plates of area A=402cm^2. What is the electric field between its plates when it is connected across a potential difference of V=14.5 Volts
It's nighttime, and you've dropped your goggles into a 2.8m deep swimming pool. If you hold a laser pointer 0.90m above the edge of the pool, How far are the goggles from the edge of the pool
A fly sits on a potter's wheel .30 m from its axle. The wheel's rotational speed decreases from 4.0 rad/s to 2.0 rad/s in 5.0 s. Determine the wheel's average rotational acceleration
A projectile is launched with a launch angle of 65° with respect to the horizontal direction and with initial speed 14 m/s. what launch angle produces the longest time of flight
A uniform meter stick with a mass of 135 g rotates about an axis perpendicular to the stick passing through the center of the stick with an angular speed of 3.50 rad/s2
define the speed with which the cart reaches positions 3, 2, and 1 (in that order). Neglect friction. Let g = 9.81 m/s2.
The magnitude of each force is 271 N, the force on the right is applied at an angle 20? and the mass of the block is 13 kg. what is the magnitude of the resulting acceleration
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