A rifle is aimed horizontally toward the center of a target 0.10 km away, but the bullet strikes 10 cm below the center. Calculate the velocity of the bullet just as it emerges from the rifle


700 m/s

Physics & Space Science

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The coefficient of linear expansion for aluminum is 24. × 10-6K-1. What is the coefficient in units of C°-1?

What will be an ideal response?

Physics & Space Science

Which of the following devices make use of the photoelectric effect?

a. digital cameras b. photocopiers c. laser printers d. solar cells e. all of the above

Physics & Space Science

An ant crawls in a straight line at a constant speed of 0.24 m/s for a distance of 3.0 m, beginning in the corner of a square classroom. It then turns exactly 90 degrees to the right, and proceeds an additional 4.0 m with a constant speed of 0.44 m/s, reaching the other corner of the same wall from which it began. What was the average speed for the full trip from corner to corner?

A. 0.34 m/s B. 0.30 m/s C. 0.21 m/s D. 0.23 m/s E. 0.32 m/s

Physics & Space Science

A steel bracket ABC (EI 5 4.2 3 106 N # m2) with span length L 5 4.5 m and height H 5 2 m is subjected to load P 5 15 kN at C. The maximum rotation of joint B is approximately:


(A) 0.18
(B) 0.38
(C) 0.68
(D) 0.98

Physics & Space Science