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A horizontal force pulling on the upper corner of a uniform cube has caused it to tip up slightly where it snagged on a bump in the floor. What is the the magnitude F of the horizontal force as a multiple of the magnitude W of the weight of the cube?
question an ambulance has a siren of frequency 700 hz. if the ambulance is moving at a speed of 60 miles per hour what
The Stanford Linear Accelerator can accelerate electrons to ener- gies of 50 GeV. What is their de Broglie wavelength? Recalling that waves can only probe structure as small as their wavelength divided by 2, what fraction of a proton’s diameter (d = ..
The Doppler effect using ultrasonic waves of frequency 2.27×10^6hz is used to monitor the heartbeat of a fetus. calculate the maximum velocity of the surface of the beating heart
What is the magnitude of the force on an electron at a distance of 3.86 Angstrom from the thorium nucleus? What would the magnitude of the force be if the distance of the electron from thenucleus were doubled?
A 54kg sprinter, starting from rest, runs 60m in 7.0s at constant acceleration. What is the magnitude of the horizontal force acting on the sprinter? What is the sprinter's average power output during the final 2.5s
George is 36.0m from Paul, in a direction 37 degree south of east from Paul''s location How far is George from John? What is the direction of Georges location from that of John?
A 400-kg piano slides 3.6 m down a 28 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Determine the force exerted by the man
You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the empire state building. Before the state legislature votes on funding for the project.
Derive an equation of motion for the velocity v of a relativistic particle that is accelerated by a uniform time-independent electric field E.
A stream iron draws 6.0A from a 120-V line. (A) How many joules of internal energy are produced in 20 min? (B) How much does it cost, at $0.080/kWh to run the steam iron for 20 min?
A flat uniform circular disk (radius = 6.36 meter, mass = 220 kilogram) is initially stationary. Evaluate the resulting angular speed of the disk
A mass m = 4.3 kg is attached to a vertical spring with k = 220 N/m and is set into motion. What is the frequency of the oscillation
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