If one were told the object's initial velocity then one could calculate the work done by using the equations for constant acceleration to find the distance traveled. When we say work is done against a force, we mean the force does
a. none of the work c. negative work
b. positive work d. zero work
C
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In a particle accelerator, a proton reaches an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.7 × 10-27 kg. What is the force on the proton?
What will be an ideal response?
How was the value of G first determined?
a. by Cavendish, using a torsion balance b. by Eötvös, using a torsion balance c. via a gedanken experiment d. by Newton, watching an apple fall e. none of the above
When the voltage across a steady resistance is doubled, the current
A) is half. B) remains the same. C) is doubled. D) is quadrupled.
What quantities are plotted on a blackbody radiation curve?
a. total radiated energy vs. temperature b. radiation intensity vs. wavelength c. wavelength of peak emission vs. temperature d. none of the above