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A power boat of mass 500 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 765 N. The driver of the boat shuts off the engine, and the boat coasts to a halt. Assume -- contrary to fact -- that the resistive force due to the water is constant, independent of the boat's speed.
(a) How far does the boat coast? (b) How much time does it take for the boat to come to rest after the engine is turned off?
A large sculpture is lowered into place by a crane. The sculpture has a mass of 2225 kg. When the sculpture makes contact with the ground, the crane slowly releases the tension in
A charge of 2.00x 10 -6 C is moved against a constant electric field. If 4.50 x 10 -4 J of work is done on the charge. what is the potential difference between the initial an
What is the Directionality of LASER? Directionality: Laser emits light which is highly directional. Laser light is emitted like a relatively narrow beam in an exact direction.
Part A) Infra-Red (IR) Detectors: An IR detector has an impedance of Z= (400+j200) ? . . During design tests the detector current is measured as 4 µA. What is
If 10 joules of energy are required to move 5 coulombs of charge between two points, the potential difference between the two points is equal to how many volts? Ans: If 10 j
What is hologram? Holography When an entity is photographed by a camera a two dimensional image of three dimensional objects is obtained. A three dimensional image of
Marine Application:- Suitably designed one or double speed squirrel cage induction motors are used.
What is the angular acceleration of the Earth around the Sun? What equation is used to derive it?
A model to show the apparent path of the sun among the stars The signs of the zodiac are drawn in the correct order on a strip of paper about 60 cm long and 8 cm wide. The ends
In a Wheatstone bridge PQRS, a galvanometer is connected among Q and S and a voltage source between P and R. An unknown resistor Rx is connected among P and Q. When the bri
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