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A boat observed by an observer on the shore moves at right angle to the motion of a stream at 4m/s. If the stream is moving at 3 m/s, what is the speed of the boat with respect to the water?
A solid cylinder with a mass of 1.5 Kg initially at rest rolls down from a height of 2.00 m. What will be its speed when it reaches the bottom
An electrical point charge of 4.50 mC is located on the x-axis at x = 8.00 cm. A second point charge is located on the y-axis at y = 5.70 cm. What is the distance between the two charges
The electric output of a power plant is 790MW. Cooling water flows through the power plant at the rate 0.600*10^8 L/hr. What is the power plant's thermal efficiency
A car travels north at 28.9 m/s for 14.3 min. It then travels south at 40.1 m/s for 28.5 min. a) What is the total distance the car travels? b) What is the displacement of the car?
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
A pilot having mass M(kg) flies a plane in a vertical loop with a radius of 800m at a constant speed of 500 km/h. Determine the force exerted on the pilot by the seat at both the top and bottom of the loop
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.0 N. What is the volume of the object
An X-ray photon with a wavelength of 0.260 nm scatters from a free electron at rest. Find the final momentum of the photon
Male mosquitoes in the mood for mating find female mosquitoes of their own species by listening for the characteristic "buzzing" frequency of the female's wing beats. How many wing beats occur in one minute
The top of the pool table is 0.810 m from the floor. The placement of the tape is such that 0 m aligns to the edge of the table, At what speed did his pool ball hit the ground
A Carnot refrigerator operating between -10.0 ?Cand + 10.0 ?C extracts heat from the cold reservoir at the rate 100J/s. What is the rate at which heat is exhausted to the hot side
Find the speed an alpha particle requires to come within 4.0x10-14 m of a uranium nucleus. Find the energy of the alpha particle
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