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A person scuffing her fee on a dry day accumulates a net charge of -42 uC. How many excess electrons does she get, and by how much does her mass increase?
A physics teacher tells her class that their final project requires the students to measure a specific variable and determine the velocity of a car with no more than 2.5% error. Will Jennifer and Johnny pass their final project
A parallel-plate capacitor has a plate separation of 5.0 cm. If thepotential difference between the plates is 2000 V, with the top plate at the higher potential, what is the electric field between the plates?
An airplane is flying through a thundercloud at a height of 1600 m. what is the electric field vector E at the aircraft
question a tungsten filament used in a flashlight bulb operates at 0.20 a and 3.2 v. if its resistance at 20oc is 1.5?
A 5 kg block sits on a surface with a maximum static coefficient of friction of 0.60. A 10g bullet is fired into the block. How much kinetic energy is dissipated in the bullet/block collision
How much heat flows from 1.00 kg of water at 42.0°C when it is placed in contact with 1.00 kg of 16°C water in reaching equilibrium
1. given the energy range of a radiation source to be 0.5 ev. calculate the same energy range in joules. dont use the
An engraver uses a magnifying glass (f = 8.80 cm) to examine some work, as in the drawing. What is the distance between the work and the magnifying glass
A uniform line of charge that is 5.00cm long has a total charge of 6.00uC. An electron is at distance of 5.00cm from one end of the charge distribution, What is the electric field at the electron
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountain, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the easter..
A siren has a frequency of 875 Hz when it and an observer are both at rest. The observer then starts to move and finds that the frequency he hears is 1251 Hz. What is the speed of the observer
Three identical boxcars are coupled together and are moving at a constant speed of 28.0 on a level, frictionless track. What is the speed of the four cars
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