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By what height must a long jumper raise his centre of mass when making a jump of 9m, if his horizontal velocity on take-off is 8ms-1?
You are driving just behind a second car and both of you are moving at a speed 68. If you are very tired after a long night, or you are texting, or you are alcohol impaired, your reaction time can be twice your standard reaction time. What is the m..
Three identical very dense masses of 5300kg each are placed on the x axis. One mass is at x1 = -120cm, one is at the origin, and one is at x2 = 310cm. What is the magnitude of the net gravitational force
What is the smallest thickness of a soap film (n = 1.33) that would appear black if illuminated with 450 -nm light? suppose there is air on both sides of the soap film.
A yo-yo has a rotational inertia of 977 g•cm2 and a mass of 117 g. How long does the yo-yo take to reach the end of the string
Spaceman notices that his landing gear have compressed 8.7centimeter on earth when his rocket ship is at rest. Find the period of that pendulum in this planet
A heat engine operating between a pair of hot and cold reservoirs with respective temperatures of 500 °K and 300 °K will have , what is the output energy
A projectile is fired straight upward at 166 m/s. Determine how fast is it moving at the instant it reaches the top of its trajectory
an object can be hung from a string with a linear mass density of 0.00200 kg/m that passes over a light pulley. What is the frequency of the vibrator
A vacuum cleaner is plugged into a 120.0-V socket and uses 3.1 A of current in normal operation when the back emf generated with the electric motor is 77.0 V. Discover the coil resistance of the motor.
In an L-R-C series circuit, L = 0.398H , R = 300 ohm, and C = 6.08 x 10-8 F. Determine the voltage amplitude of the source
What capacitance is required to store an energy of 11 kW•h at a potential difference of 900 V
A 565 N mountain climber moves across a rope strung across a canyon. When she is more than halfway across, What are the tensions in the rope in front and behind her
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