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Zach, whose mass is 64kg , is in an elevator descending at 10m/s. The elevator takes 5.0s to brake to a stop at the first floor.
What is Zach's apparent weight while the elevator is braking?
What is the magnitude of the vertical component of its velocity as it strikes the ground.
For each of the currents listed in table 2, and using the inductance of the coil found by experiment, determine the total stored energies in the coil
A 6.0 m long, 12 kg ladder rests against a smooth vertical wall with bottom of the ladder 3.0 m from the wall. What is the force the wall exerts on the ladder
Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge, Find the magnitude of the electric force on the bee in the electric field just above Earth's surface, 130N/C directed vertically downward
A 1.5 kg crate falls from a height of 2.0 m onto a spring scale where the spring constant is 1.5 ´ 105 N/m. when you calculate the gravitational potential energy
A jet airplane is in level flight. The mass of the airplane is m=8850 kg. at what angle is the airplane banked
One end of a spring is attached to a wall. A 28N pull on the other end causes the spring to stretch by 2.8cm, What is the spring constant
When jumping, a flea reaches a takeoff speed of 1.2 m/s over a distance of 0.46mm, What is the flea's acceleration during the jump phase and How long does the acceleration phase last
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = 38.8 cm. Precisely 35.7 cm behind this lens is a concave lens with the focal length f2 = -10.3 cm. The object to be photographed is 3.97 m in front o..
Use work and energy to calculate the stopping force on an egg ( we will model it as an spherical object) that is dropped form a height of 2m
An LRC series circuit with R= 150 ohms, L= 25 mH and C= 2 mF is powered by an AC voltage source of peak voltage Vo= 340 V, Determine the peak current that flows in this circuit
A 440-loop circular armature coil with a diameter of8.0cm rotates at 120rev/s in a uniform magnetic field of strength 0.30T, What is the rms voltage output of the generator
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