A proton and antiproton each with total energy 800 GeV collide head-on. What is the total energy (particles + energy) released?
a. zero
c. 400 GeV
b. 800 GeV
d. 1600 GeV
D
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A 1000-kg car is driving toward the north along a straight road at a speed of 20.0 m/s. The driver applies the brakes and the car comes to a rest in a distance of 140 m. What is the constant force applied to the car to bring it to rest?
A) 1.43 N north B) 7.00 × 103 N south C) 1.43 × 103 N south D) 1.43 N south E) 143 N south
An electric toaster operating on 120 volts draws a current of 6 amperes. The resistance of the toaster is __________
Fill in the blank(s) with correct word
Which of the following is that form of energy associated with an object's motion?
a. potential b. thermal c. bio-chemical d. kinetic
How high a hill would a 75-kg hiker have to climb to increase her gravitational potential energy by 10,000 J?
What will be an ideal response?