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A charge of -2.9 µC is fixed in place. From a horizontal distance of 0.0275 m, a particle of mass 4.25 10-3 kg and charge -1.5 µC is fired with an initial speed of 85.0 m/s directly toward the fixed charge. How far does the particle travel before its speed is zero?
A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24 degrees below horizontal. Find the length of time the car is in the air
The Sun is a low mass star and so would never have the core fusion reactions of massive stars. Yet, the Sun has iron in its atmosphere, as well as gold, silver and other elements much heavier than iron and why?
A man slides along a long water slide and then being launched into the air to land in a water pool. Find the magnitude of the velocity at landing
A ray of light in air makes an angle of incidence of 30.2 as it enters an unknown liquid. the refracted ray in the fluid meassured to be 22.5. compute the index of refraction of the unknown liquid
A machine in the factory operates from 12 V. To operate from a 240 V line, What would the voltage output be if the transformer were connected backward
A current with sinusoidal time-dependence, whose peak value is 6.55 A and frequency is 879 cycles per second, Calculate the average power dissipated by the loop
A hydrogen atom in the n= 2 state absorbs a photon with wavelength 486nm. Find the change in the orbiting electron's kinetic energy
a man sitting in a bosun's chair that dangles from a massless rope, which runs over a massless frictionless pulley, In each of the four cases, what is the force exerted on the ceiling by the pulley system
A record turntable rotates through 5.0 rad in 2.8 s as it is accelerated uniformly from rest. What is the angular velocity at the end of that time
Blue light of wavelength 446nm passes through a diffraction grating with a slit spacing of 1.5×10 ?3mm and makes a diffraction pattern on the wall. How many bright fringes will be seen
When the Sun is directly overhead, a hawk dives toward the ground with a constant velocity of 5.70 m/s at 55.0° below the horizontal
A block of mass 250 kg is pushed 2.20m along a frictionless horizontal table by a constant 16 Nforce directed 25.0 below the horizontal. estimate the work done by net force on block
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