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A swimmer heads directly across a river, swimming at2.80 m/s relative to still water. He arrives at a point 49.0 m downstream from the point directly across the river, which is 73.0m wide.
Discover:
1. What is the speed of the river current?
2. What is the swimmer's speed relative to the shore?
3. In what direction must the swimmer head so as to arrive at the point directly opposite his starting point? Express your answer in terms of the angle by respect to a line drawn directly across the river.
monochromatic light is normally incident on one face of a prism with a right triangle for a base. the light travels through the prism such that it strikes the hypotenuse of the triangle from inside.
An electric utility company supplies a customer's house from the main power lines (120 V) with two copper wires, For this load current, find the power delivered to the customer
An ultralight plane and pilot have a total mass of 194 kg. While executing a banked curve of radius 23 m at a speed of 12 m/s, what is the net force acting on the plane and pilot
You (mass 80 kilogram) and your friend (mass unknown) are in a rowboat (mass 60 kilogram) on a calm lake. Determine what is your friend mass
A 0.24 kg blob of clay is thrown at a wall with an initial velocity of 19 m/s. If the clay comes to a stop in 91 ms, what is the average force experienced by the clay
An 83 kg fullback moving east with a speed of 5.4 m/s is tackled by a 96 kg opponent running west at 3.8 m/s, find the velocity of the players immediately after the tackle
question the speed of light in a material is 0.77timesc. what is the critical angle in degrees of a light ray at the
Two equal conducting spheres are separated by a fixed center to center distance of 46.8 centimeter and have different charges. Find the initial charge that carried the positive charge
Develop an expression for the electric field anywhere inside thecylinder. To check your result, what is the magnitude of theelectric field at r = 5.90 cm, where R = 9.80 cmand ρ = 7.55 μC/m3?
how far from the woman will he be now. How various revolutions will the car have gone through when the magnitude of its total acceleration is 3.30 m/s^2.
A 0.900-V potential difference is maintained across a 1.50-m length of tungsten wire that has a cross-sectional area of 0.600 mm2. What is the current in the wire.
high-energy gamma rays can reach a radiation detector by compton scattering from the surroundings. this effect is known
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