A uniform rod (mass = 2.0 kg, length = 0.60 m) is free to rotate about a frictionless pivot at one end. The rod is released from rest in the horizontal position. What is the magnitude of the angular acceleration of the rod at the instant it is 60° below the horizontal?
a. 15 rad/s2
b. 12 rad/s2
c. 18 rad/s2
d. 29 rad/s2
e. 23 rad/s2
b
Physics & Space Science
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A racecar goes around a 200 m radius curve at a constant speed of 40 m/s. Its acceleration is
a. 0. b. 0.2 m/s2. c. 4 m/s2. d. 8 m/s2. e. 16 m/s2.
Physics & Space Science
Which of the following strengthening processes in metals does not require the addition of foreign atoms or compounds to a pure metal?
(a) Grain boundary (b) Dispersion (c) Precipitation (d) Solid solution
Physics & Space Science
The magnetic field unlike the electric field is continuous
Indicate whether the statement is true or false
Physics & Space Science
The type of EM wave having the highest frequency is __________
Fill in the blank(s) with correct word
Physics & Space Science