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the velocity of a boat with respect to the water is 4.0 m/s at an angle of 30.0 degrees North of East. The velocity of the water with respect to the ground is 3.0 m/s at an angle of 90.0 degrees North of East. What is the velocity of the boat with respect to the ground?
The resistance of a silver wire is to be calibrated for low-temperature measurements. A silver wire with a resistance of 1.15, what is the expected resistance of the silver wire at -196 °C
A small helium-neon laser emits red visible light with a power of 3.2 mW in a beam with a diameter of 2.5 mm. what is the total energy contained in a 1.00 m length of the beam
A person lifts a 5kg cement block a vertical distance of 2.3m and after that aeries the block horizontally a distance of 6m. Determine the work completed by the person and by the force of gravity in this process.
A block is launched with speed up v0 a slope making an angle ? with the horizontal, Find an expression for the distance d the block travels along the slope
When blue light of wavelength 440 nm falls on a single slit, the first dark bands on either side of center are separated by 49.0 degrees. Determine the width of the slit
If the loop's diameter changes from 24.0cm to 5.8cm in 0.67s , what is the direction of the induced current, If the coil resistance is 2.6? , what is the average induced current
A 65 kg hiker has fallen down a hole. One rescuer attaches a rope to the injured hiker and then a second rescuer pulls the injured hiker straight up out of the hole at a steady rate. How much force would the second rescuer need to exert on the rope t..
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat
A cylinder with a moveable piston contains 178 mL of nitrogen gas at a pressure of 1.22 atm and the temperature of 298 K. What should the final volume be for the pressure of the gas to be 1.52 atm at a temperature of 335 K.
A ball is thrown horizontally from the top of a tower 30m high and lands 15m from its base. What is the ball's initial speed
A sled is pulled with a horizontal force of 20 N along a level trail, and the acceleration is found to be 0.35 m/s2. An extra mass m = 4.2 kg is placed on the sled. If the same force is just barely able to keep the sled moving, what is the coeffic..
define why a dielectric increases the maximum operating voltage of a capacitator even though the physical size of the capacitator doesn't change.
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