Norma releases a bowling ball from rest; it rolls down a ramp with constant acceleration. After half a second it has traveled 0.40 m. How far has it traveled after two seconds?
a. 3.2 m
c. 9.0 m
b. 6.4 m
d. 16 m
B
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A runner maintains constant acceleration after starting from rest as she runs a distance of 60.0 m. The runner's speed at the end of the 60.0 m is 9.00 m/s. How much time did it take the runner to complete the 60.0 m distance?
A) 6.67 s B) 15.0 s C) 9.80 s D) 10.2 s E) 13.3 s
You press a stick that has a varying cross-sectional area horizontally between the palms of your hands. The area of the stick pushing against your left palm is twice the area of the stick pushing against your right palm.The force on your left palm is twice than the force on your right palm
a. True b. False Indicate whether the statement is true or false
Which alcohol is used as an antifreeze?
a. 2-Hydroxypropane b. Ethylene glycol c. Ethanol d. Methanol
Imagine that you could put three electrons into isolation in a box. Initially, electrons A and B have kinetic energy E0 and electron C has kinetic energy 2E0. After isolation from observation for a short time, you examine the electrons again and find that one electron has energy 2E0 and two electrons have energy E0
Assume for this problem's sake that the electrons can transfer energy to one another but only in increments of E0. Assume also that all electrons are exactly the same. What is the probability that the higher energy electron is electron C?