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A horizontal pipe contains water at a pressure of 140kPa flowing with a speed of 1.2m/s . The pipe narrows to one-half its original diameter.
a. What is the speed of the water?
b. What is the pressure of the water?
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, What emf and current are induced in the square coil
A supply plane needs to drop a package of food to scientists working on a glacier in Greenland. How far short of the target should it drop the package
The electromagnetic wave used in a microwave oven have a wavelength of about 12.228 cm. What is the frequency of the radiation
At the top of a cliff 100m high, Raoul throws a rock at a 30 degree angle with velocity 15.0 m/s. how far away from the bottom of the cliff should the first rock land
A cannon tilted upward at = 33 fires the cannonball with a speed of 99. At that instant, what is the component of the cannonball's velocity parallel to the ground.
The intensity of the light that reaches Earth from the star is 3.94 x 10-21 W/m2. At what rate does the star radiate EM energy
You exert a force of 21 N on the head of a thumbtack. The head of the thumbtack has a radius of 5 mm. What is the pressure on your thumb
A well-insulated electric water heater warms119kg of water from 20.0° C to47.0° C in33.0min. Find the resistance of its heating element
A solar cell generates a potential difference of 0.95 V when a 380 ? external resistance is connected across it, What is the internal resistance of the solar cell
Estimate mean and maximum velocities for a liquid
The super ball is not replaced by a clay ball the same size and mass. The ball is dropped from the same height and it sticks to the table. Calcluate the impulse exerted on the clay ball
A planet of total mass M and radius R has a non-uniform density such that p(r) = po (1-r/R), Determine the gravitational field g(r) at a point r ? R inside the planet
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