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A battery of internal resistance r = 0.2 and emf E = 12.0 V. If the battery is connected to a device of resistance 6.0 (ohms) , what is the potential difference across the battery ? What is the current through the device ? What is the electric power output of the battery?
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
A bouncy ball is dropped from a heigh h above a floor. If every bounce robs the ball of 6.7% of its kinetic energy just before the bounce, how high will it reach before its eleventh bounce
The amount of internal enrgy needed to raise temperature of .25kg of water by .2 degreesCis 209.3J. How fast must a .25kg baseball travel in order for its kinetic energy to equal this internal energy.
You make five measurements of a particular wavelength, and you find you have some random noise. Your measurements are 244, 251, 248, 248, 246 nm. What is the mean value for your five measurements
A u-tube manometer is used to measure the pressure of a vessel under vacuum. Assume the manometer is open to atmospheric pressure (101.325 kPa) and the density of the fluid in the manometer is 12.0 g/cm3. When the vessel is under 11.5 psi of vacuu..
The accommodation limits for Nearsighted Nick's eyes are 20.0 cm and 82.0 cm. When he wears his glasses, At what minimum distance is he able to see objects clearly
A 19.8 kg block is dragged over a rough, hor- izontal surface by a constant force of 180 N acting at an angle of angle 32.8? above the horizontal. Find the work done by the normal force
Two cars are 1.24 miles apart both moving at 62.81 mi/h, How many miles will the trailing car travel before catching up to the lead car
A car is traveling at 66.2 mph. The driver applies the brakes and the car decelerates at 1.3 m/s2. What is the stopping distance
A block is placed at the end of the frictionless ramp and is pulled up the ramp through a solid ball on the end of a string that passes over a frictionless pulley that does not affect the motion of the block or ball. The ramp is 3.40 meters long and ..
Many people mistakenly believe that the astronauts orbiting the earth are "above gravity." Compute the acceleration because of gravity, g, for space shuttle territory, 245 kilometres above the earth's surface (dashed line in sketch). Earth's mass ..
An incompressible fluid is flowing through a horizontal pipe with a constriction. The velocity of the fluid in the wide section of the pipe is 5.00 m/s. What is the pressure in the narrow section of the pipe
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