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Water is pumped steadily out of a flooded basement at a speed of 4.6 m/s through a uniform hose of radius 1.4 cm. The hose passes out through a window 3.2 m above the waterline. What is the power of the pump?
A step-down transformer has 16,000 turns on the primary and 95 turns on the secondary. If the rms emf across the secondary coil is 120 V, Elucidate the maximum emf across the primary coil?
q1. an airplane has a mass of 20000 kg and takes off under the control of a constant net force of 30000 n. what is the
Two people carry a heavy electric motor by placing it on a light board 2.70m long. One person lifts at one end with a force of 380N, Where is its center of gravity located
A stone is dropped from the top of a cliff at t=0. The splash it makes when striking the water below is heard 6 seconds after it is dropped (i.e. at t=6 sec). How high is the cliff? (i.e. find 'h') suppose that the speed of sound in air is 340m/s ..
Two small metal spheres with masses 2.0 {rm g} and 4.0 {rm g} are tied together by a 5.3-{rm cm}-long massless string and are at rest on a frictionless surface. Each is charged to +2.3 mu C. What is the energy.
q1. a coiled telephone cord forms a spiral with 56 turns a diameter of 1.30 cm and an unstretched length of 60.0 cm.
A charged line extends from y = 2.50 cm to y = -2.50 cm. The total charge distributed uniformly along the line is -8.50 nC. Find the magnitude of the electric field on the x-axis at x = 10.0 cm
The threshold of dark-adapted (scotopic) vision is 8.0 ? 10-11 W/m2 at a central wavelength of 450 nm. how many photons per second enter the eye
An unmarked police car travelling a constant 85 km/h is passed by a speeder travelling 145km/h. Precisely 1s after the speeder passes, police officer steps on the accelerator.
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +44.0 cm. How far behind the concave lens should the film be placed
A 5.6cm diameter horizontal pipe gradually narrows to 4.6cm . When water flows through this pipe at a certain rate, What is the volume rate of flow
A 0.400 kg soccer ball approaches a player horizontally with a speed of 11.0 m/s. What impulse was delivered to the ball by the player
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