In projectile motion, which of the following is not constant?
a. Vertical velocity
b. Horizontal velocity
c. Acceleration
d. None of these
a
Physics & Space Science
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Angular Quantities: At a certain instant, a compact disc is rotating at 210 rpm. What is its angular speed in rad/s?
A. 11 rad/s B. 22 rad/s C. 45 rad/s D. 69 rad/s E. 660 rad/s
Physics & Space Science
Let's say that you have one mole of hydrogen gas, one mole of helium gas, and one mole of oxygen gas. Which of these quantities of gas has the greater mass?
1.The hydrogen gas. 2.The helium gas. 3.The oxygen gas. 4.They all have the same mass.
Physics & Space Science
Newton's First law holds in all reference frames, including inertial reference frames
Indicate whether the statement is true or false
Physics & Space Science
What is the reactance of a 20-mH inductor at a frequency of 60 Hz?
A) 0.13 ? B) 1.2 ? C) 7.5 m? D) 1.2 m? E) 7.5 ?
Physics & Space Science