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Problem: The motor of a ski boat generates an average power of 7.20 x 104 W when the boat is moving at a constant speed of 11 m/s. When the boat is pulling a skier at the same speed, the engine must generate an average power of 8.00 x 104 W.
Part A: What is the tension in the tow rope that is pulling the skier?
I want help to determine the tension in the tow rope that is pulling the skier.
A 715 kg car moving at 28 m/s brakes to a stop. The brakes contain about 17 kg of iron that absorb the energy. What is the increase in temperature of the brakes
A 65-? loudspeaker, a 8.0-? loudspeaker, and a 2.1-? loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers
a stick of mass m and length l spins with frequency w around an axis the stick makes an angle theta with the axis. one
A speeder is pulling directly away and increasing his distance from a police car that is moving at 23.0 m/s with respect to the ground. Calculate the speeder's speed with respect to the ground.
Bacillus thuringiensis is a bacterium that produces a crystalline poison that is deadly to certain insects. What is the name of the gene that codes for the protein
Consider two adjacent fields. One is an irrigated cropped field, the other is a fallow field. Which of the fields will have the highest Bowen ratio
A bullet of mass 6.3 g is fired horizontally into a 1.2 kg woodenblock at rest on a horizontal surface. The coefficient of kineticfriction between block and surface is 0.25. The bullet stops in theblock, which slides straight ahead for 2.7 m
A planar loop consisting of four turns of wire, each of which encloses 200 cm2, is oriented vertically to a magnetic field that increases uniformly in magnitude from 10 mT to25 mT in a time of 5.0 ms. what is the resulting induced current in the coil..
Suppose the end of your finger is charged. (a) Estimate the breakdown voltage in air for your finger. (b) About what surfacecharge density would have to be on your finger at this voltage?
a bullet 2.00 cm long is fired straight through a board 10 cm thick. the bullet strikes the board at speed of 420ms and
A point charge q = -2.4 nC is initially at rest adjacent to the negative plate of a capacitor, What is the kinetic energy of the point charge just before it hits the positive plate
Estimate mean and maximum velocities for a liquid
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