Calculate the efficiency of an engine with an input temperature of 755 K and exhaust temperature of 453 K.

When a charged particle moves at an angle of 11° with respect to a magnetic field, it experiences a magnetic force of magnitude f.

The hammer of an electric bell strikes 1440 times in a minute and does a work of 0.2 J per strike. what is the power of hammer in S. I. system?

One significant result of the Michelson experiment of 1880 was that it: measured man's reaction time accurately measured the speed of light in the air calculated the speed of light over a short distance.

10. Which of the following is an acceleration? a. 12 m/s2 down b. 5 m/s up c. 8N West

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the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.