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An electron is moving in a plane with a long straight current carrying wire. The electron is heading at a 45 angle directly toward the wire when it is 50cm away; the electron reaches only as close as 1.0 cm, before being repelled away, always moving in the same plane. If the electron has an initail speed of 3.4 x 10^6 m/s, determine
(a) the current in the wire?
(b) the speed of the electron at its point of closest approach?
A small marble is dropped from a height of 12 m and comes to rest after penetrating2.3 cm into sand. A) Determine the marble's impact speed at the sand's surface. B) Determine the marble's deceleration while impacting with the sand.
A light bulb radiates most strongly at a wavelength of about 3000 nm. What is the temperature of its filament
Insects do not have lungs as we do, nor do they breathe through their mouths. Instead, they have a system of tiny tubes, called tracheae, through which oxygen diffuses into their bodies. find the oxygen concentration at the interior end of the tube
A 75 kg horizintal plank is suppirted at each end. a 126kg giant panda is resting a quarter of tge way from the left end. what is the verticle force being exerted on the left support?
A wire has a length of 6.20 10-2 m and is used to make a circular coil of one turn. compute the maximum torque that this coil can experience
It takes a minimum distance of 48.96 m to stop a car moving at 12.0 m/s by applying the brakes (without locking the wheels). find the minimum stopping distance
A rocket is fired straight up and accelerates upward at 20 m/s2 for 12 seconds. What is the rocket's maximum altitude
A 57 gram tennis ball is served at 45 meters per second. If the ball started from rest what impulse was applied to the ball by the racket
What is an average velocity of the train throughout run
An airplane with a speed of 74.9 m/s is climbing upward at an angle of 38.3 ° with respect to the horizontal. When the plane's altitude is 631 m, Calculate the distance along the ground
A football is kicked off at a speed of 24 m/s at 30 degree about the horizontal and lands on the field. What is the horizontal distance from the starting point
A compund microscope has an objectibe lens with a 2.2 cm focal length and an eyepiece with a 5.4 cm focal length. what magnification does the microscope produce
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