Author Question: An electron in a cathode ray tube is accelerated through a potential difference of 10 kV. What ... (Read 27 times)

panfilo · **on:** Jul 28, 2018

An electron in a cathode ray tube is accelerated through a potential difference of 10 kV. What kinetic energy does the electron gain in the process? (e = 1.6 10-19 C)
a. 8.0 10-16 J
c. 8.0 1022 J
b. 1.6 10-15 J
d. 1.6 10-16 J

Question 2

During a snowball fight, two balls with masses of 0.4 and 0.6 kg, respectively, are thrown in such a manner that they meet head-on and combine to form a single mass. The magnitude of initial velocity for each is 20 m/s. What is the speed of the 1.0-kg mass immediately after collision?
a. zero
c. 4 m/s
b. 3 m/s
d. 5 m/s