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Susan is driving north at 60 mph, and Shawn, driving East at 45 mph, are simultaneously passing through an intersection. If they barely miss each other, find what was their velocity of approach to each other?
two point charges q and -3q are located a distance d apart with -3q to the right of q. find the location of all the
A light beam is incident on heavy flint glass (n=1.65) at the polarizing angle. Angle of refraction is 31.22 degrees. determine the change in the intensity
An object moves with constant acceleration 4.20 m/s2 and over a time interval reaches a final velocity of 11.0 m/s. What is the total distance it travels during the interval
a sinusoidal wave of amplitude a1 approaches a and travels through a region of thenbspstring in which the mass per unit
q1.a bat in a cave emits a sound pulse and receives an echo 0.22 second later. assuming that the speed of sound is 339
A cannon fires a cannonball from the top of a wall at a speed of 25.58 m/s and an angle of 17.44 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
solar cells are often coated with a transparent thin film of silicon monoxide sio n 1.45 to minimize re?ective losses
An electron orbiting a hydrogen atom has an initial energy of -0.544 eV. The atom emits a photon, then absorbs a photon, ending up with an energy of -3.4 eV. What was the wavelength of the emitted photon?
In a railroad switchyard, a 50 ton freight car is sent at 7.4 mi/h toward a 27 ton car that is moving in the same direction at 2.0 mi/h. What is the speed of the pair after they couple together
A three-step cycle is undergone by 3.4 mol of an ideal diatomicgas: (1) the temperature of the gas is increased from 200 K to 400 K at constanr volume;
Crossfire was a popular board game in which players attempted to propel a "puck" forward towards their opponet's side by shooting metal balls at it. What is the maximum speed a player can impart to the puck with a single shot
A 1.2-{\rm cm}-tall candle flame is 58{\rm cm} from a lens with a focal length of 22{\rm cm}, What is the height of the flame's image
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