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Question: The velocity of the wind relative to the water is crucial to sailboats. Suppose a sailboat is in an ocean current that has a velocity of 2.3 m/s in a direction 31 degrees east of north relative to the Earth. It encounters a wind that has a velocity of 4.1 m/s in a direction of 53 degrees south of west relative to the Earth. What is the magnitude of the velocity of the wind relative to the water in m/s? What is the angle of the velocity of the wind relative to the water degrees S of W?
Suppose a portable electric heater can be modeled by an Ohmic resistor. If the heater requires 600 Watts to operate, calculate the voltage drop across the heater
A coffee filter of mass 1.4 grams dropped from a height of 3 m reaches ground with a speed of 0.7 m/s. How much kinetic energy Kair did the air molecules gain from the falling coffee filter.
A mass attached to a spring oscillates with a period of 1.23•s and an amplitude of 20•cm. What is the initial phase
Plastic Packaging. Hsiao, Linse, and McKay investigated the production of some plastic bags, specifically hole positions on the bags.
A closed bottle with a value of 2.10 L contains ethane gas at a temperature of 305 K and atmospheric pressure 1.013 x 105 Pa. Find the number of moles of ethane gas in the closed bottle
a suitcase mass m 15 kg is resting on the floor of an elevator. the part of the suitcase in contact with the floor
A cat dozes on a stationary merry-go-round, at a radius of 5.4 m from the center of the ride. Then the operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 6.2 s
A proton moves through a region of space where there is a magnetic field B =(0.49i+0.30j)T and an electric field E =(2.9i+4.5j)×103 V/m. Find the components of the total force on the proton
A flat go-kart track consists of two straightways 100 m long with semicircular ends which have a radius of 25.0 m. Determine the magnitude of the total acceleration
A 120 ohm resistor is connected to an AC source with a maximum voltage of 210 V. What is the average power dissipated in the resistor
Which determines whether a projectile electron strikes another electron or passes by the nucleus? Where in the atom do x-rays originate?
An 8.40 gram bullet has a speed of 1.13 km/s. Determine what is its kinetic energy in joules
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