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What is the escape speed of an electron launched from the surface of a 1.5-cm-diameter glass sphere that has been charged to 8.0 nC ? (v=?)
Express your answer to two significant figures and include the appropriate units.
when landing from jumping up, a person should bend hisknees to avoid injury. A 75kg man just before contact withthe ground has a speed if 6.4m./s, what is the average force that actson him during this time
At a college homecoming 18 students lifted a sports car. Each student exerted 400N of upward force on the car. What is the mass of the car in kg? What is its weight in lbs?
a vertical cylinder of cross-sectional area 0.06 m2 is fitted with a tight-fitting friction- less piston of mass 5.4
Find the tension in the chains and the period of the motion - equations and formulas and correct units
A step-down transformer is used for recharging the batteries of portable devices. Find the power delivered to the CD player
Compute the electric field needed to cause that acceleration, and the amount of charge that the Van de Graaff had accumulated. Note: Van de Graaff has a radius of 0.150 m.
The solar panels on the roof of a house measure 4.0 meter by 6.7 meter. Find what average power do the panels supply when the incident intensity is 0.80 kW/m2 and the light is incident at an angle of 56 degree from the normal
Calculate the hang time of a person who moves horizontally 3 m during a 1.25-m high jump. What is the hang time when moving 6 m horizontally during this jump
A 70 kilogram person is walking up a 15 % grade hill. Plot the fuel consumption of the person in watts vs. speed from 1 to 7 kilometers per hour in steps of 1. What is the efficiency of the person converting fuel power
A car of 1200 kg mass enters an unbanked, curved roadbed of radius 70 m. find the maximum speed with which the car can take the turn
a student standing on a train staiton observes that the pitch (frequency) of the train decreases from 888.8 Hz to 862.8 Hz, What is the speed of the train
The scale of a spring balance reading from zero to 180 N is7.00 cm long. A fish suspended from thebalance is observed to oscillate vertically at 2.50 Hz. What is the mass of the fish? Neglect themass of the spring.
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