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The tension at which a fishing line snaps is commonly called the line's "strength." Compute what minimum strength is needed for a line that is to stop a salmon of weight 85 Newton in 8.9 centimeter if the fish is initially drifting at 2.5 m/s? Suppose a constant deceleration and that the fishing line is horizontal.
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Suppose a single electron orbits about a nucleus containing two protons (+2e), find the magnitude of the electron's centripetal acceleration
A column of oil of height 70.0 cm supports a column of an unknown liquid. Determine the density of the unknown liquid
A river 98.2 m wide flows toward the south at 35.8 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. How far downstream does she travel
The United States and South Korean soccer teams are playing in the first round of the World Cup. find its velocity at the time of interception
A certain lightbulb has a tungsten filament with a resistance of 19.1 ? when at 20.0°C and 142 ? when hot. Find the temperature of the hot filament
An unknown substance has a mass of 0.125 kg and an initial temperature of 80.0°C. calculate the specific heat of the unknown substance
A hunter wishes to cross a river that is 2.10 km wide and that flows with a speed of 4.4 km/h. The hunter uses a small powerboat that moves at the maximum speed of 12.60 km/h with respect to the water.
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 23 to 61 dB
Two solid blocks of identical size are submerged in water. One block is aluminum and the other is lead. Upon find which is the buoyant force greater
At each corner of a cube of 25.41 cm on a side there is a point charge Q = 8.360e-6C. Take V to be zero at infinity, what is the potential at the center of the cube
A current of 5 A flows to the right along the x-axis through an infinitely long wire. A loop of wire with radius 25 cm is centered along the y-axis at y=1 meter. Draw the final arrangement of wires
Two converging lenses having focal lengths of f1 = 11.1 cm and f2 = 20.0 cm are placed d = 50.0 cm apart. The final image is to be located between the lenses, at the position x = 28.3 cm indicated. How far to the left of the first lens should the o..
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