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A pump is required to lift 20 kilogram of water per minute through a height of 4.00 meter. Find what output power rating in watts should the pump motor have?
A 0.5970-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. Later, you notice that the ice cube has completely melted into a puddle of water, calculate the final temperature of the puddle once it settled to equilibrium
A new record for running the stairs of the Empire State Building was set on February 3, 2003. If the height gain of each step was 0.20 m , and the mass of the runner was 72 kg, what was his average power output during the climb
A long, straight, copper wire with a circular cross-sectionalarea of 2.1mm2 carries a current of 16 A. Theresistivity of the material is 2.0 X 10-8 O m. What is the uniform electric field in the material
A generator connected to an RLC circuit has an rms voltage of 120V and an rms current of 34mA. what is the inductive reactance of the circuit
the membrane that surrounds a certain type of living cell has a surface area of 7.1 x 10-9 m2 and a thickness of 1.6 x
A pendulum bob of mass m is attached to a massless string of length L. If the bob is released from rest at a horizontal position, What is the tangential acceleration of the bob
A motorist inflates the tires of her car to a pressure of 170 kPa on a day when the temperature is -8.0°C. What is the temperature of the tires
Physics 1401 problems about rotational motion and angular displacement and angular velocity and angular acceleration about height problems.
A 7.7cm diameter horizontal pipe gradually narrows to 6.7cm . When water flows through this pipe at a certain rate, What is the volume rate of flow
A fuse in an electric circuit is a wire that is designed to melt,and thereby open the circuit, if the current exceeds apredetermined value. Suppose that the material to be used in a fusemelts when the current density rises to 470 A/cm2.
A transparent photographic slide is placed in front of a converging lens with a focal length of 2.33 cm. An image of the slide is formed 11.4 cm from the slide. How far is the lens from the slide if the image is real
the mutual force of gravitational attraction between two masses is 500 newtons.a if the masses are moved 5 times as far
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