University:
University of Nebraska at Omaha
Course:
PHYS 1120 | General Physics
Academic year:

2022
Views:

445

Pages:

4
Author:

folclord7m

PHYSICS 1. Which of the following must be known in order to determine the power output of an automobile? a. Final velocity and height b. Mass and amount of work performed c. Force exerted and distance of motion d. Work performed and elapsed time of work Answer: D 2. One mole of an ideal monoatomic gas is mixed with 1 mole of an ideal diatomic gas. The molar specific heat of the mixture at constant volume is (in cal): A) 22 cal B) 4 cal C) 8 cal D) 12 cal Answer: B 3.A runner completes one circuit of a track in 10s. The radius of the track is 100 m. The velocity of the runner is ___ A) 10 m B) 10 m/s C) 0 m/s D) 100 m/s Answer: C 4. The location of a particle has changed. What can we say about the displacement and the distance covered by the particle? A. Neither can be zero B. One may be zero C. Both may be zero D. One is positive and other is negative. Answer: A 5. A particle moves for 20s with velocity 3m/s and then moves with velocity 4m/s for another 20s and finally moves with velocity 5m/s for next 20s what is the average velocity of the particle? (in m/s) A. 3 B. 5 C. 4 D. ze Answer: C 6. Which of the following sentences is an example of instantaneous velocity? Answer: B 7. Two trains each traveling at a speed of 20kmph approach each other on the same straight track. A bird that can fly at a speed of 40kmph flies off from one train when they are 40km apart and heads directly for the other train. On reaching the other train it flies directly back to the first train and so forth. Before the trains crash, the total distance traveled by the bird is22 A. 20km B. 40km C. 60km D. 80kmm Answer: B 8. Captain Ravi of a plane, wishes to proceed due west. The cruising speed of the plane is 251 m/s relative to the air. A weather report indicates that a 65 m/s wind is blowing from the south to the north. In what direction, measured to due west, should Ravi, head the plane relative to the air? A. 5° B. 10° C. 15° D. 20° Answer: C 6. The IUPAC nomenclature of the given compound is . a. methanal b. methanol c. methane Answer: A 7. In the following list of acids, separate strong acids from weak acids : [Hydrochloric acid, Citric acid, Acetic acid, Nitric acid, Formic acid, Sulphuric acid.] a. Weak acids → Acetic acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Hydrochloric acid b. Weak acids → Hydrochloric acid, Formic acid, Citric acid Strong acids → Nitric acid, Sulphuric acid, Acetic acid c. Weak acids → Hydrochloric acid, Nitric acid, Sulphuric acid Strong acids → Citric acid, Formic acid, Acetic acid d. Weak acids → Citric acid, Formic acid, Acetic acid Strong acids → Hydrochloric acid, Nitric acid, Sulphuric acida. 0.5 M b. 1.0 M c. 2.0 M d. 0.1 M Answer: What will be the molarity of a solution containing 5g of NaOH in 250 ml solution? 10. C A. 0.1 B. 1 C. 0.5 D. 2

Fundamental Concepts in Mechanics and Thermodynamics

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