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You are designing an elevator for a hospital. The force exerted on a passenger by the floor of the elevator is not to exceed 1.57 times the passenger's weight. The elevator accelerates upward with constant acceleration for a distance of 2.2m and then starts to slow down. What is the maximum speed of the elevator?
You are jumping down from a small ledge 0.7 m high onto a concrete floor. what is the force exerted onto your feet during the landing
Water flowing through a 2.0cm -diameter pipe can fill a 500L bathtub in 4.9min. What is the speed of the water in the pipe
A series RCL circuit driven at angular frequency w = 780 rad/s has a capacitive reactance XC = 920 ohms, What is the average power consumption of the circuit
A child, hunting for her favourite horse, is running on the ground around the edge of a stationary merry-go-round. The angular speed of the girl has a constant value of .250 rad/sec.
A 0.196-µF capacitor is connected to a 246-V rms ac source at 44.5 Hz. What is the rms current through the capacitor
If 100,000 MHz radar waves are incident on a plane coated with a polymer whose index of refraction is n = 1.50, how thick would you make the coating
The plates of a parallel-plate capacitor are charged to a potential difference of 12.0 V. If the capacitance is 15.0 µF, calculate the energy stored in the capacitor
State your answer in terms of and Use three significant figures in the numerical coefficient.
Illustrate what gravitational force do the two protons in the helium nucleus exert on each other? Their separation is approximately 1.0 fm
An electric motor turns a flywheel by a drive belt that joins a pulley on the motor and a pulley that is rigidly attached to the flywheel. The flywheel is a solid disk with a mass of 50.0kg and a diameter of 1.00m.
Calculate the minimum angle above the horizontal at which Hiawatha must aim in order to outrun the arrow.
Illustrate what is the magnitude of the apparent weight of a 78kg astronaut 5200km from the center of the Earth's moon in a space vehicle moving at constant velocity?
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