An electron is accelerated through 100 kV. By what factor has its mass increased with respect to its rest mass? A) 1.20
B) 1.55
C) 4.25
D) 8.00

The x-coordinate of a particle in curvilinear motion is given by x = 3.1t3 - 4.9t where x is in feet and t is in seconds. the y-component of acceleration in feet per second squared is given by ay = 2.3t. if the particle has y-components y = 0 and vy = 5.0 ft/sec when t = 0, find the magnitudes of the velocity v and acceleration a when t = 1.8 sec. sketch the path for the first 1.8 seconds of motion, and show the velocity and acceleration vectors for t = 1.8 sec. answers: v = ft/sec a = ft/sec2

In a system, when potential energy decreases, then entropy also decreases. true false

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is