Matter can be defined as anything that ______________ ______________ and ______________ ______________
Fill in the blank(s) with correct word
has mass; occupies space
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A simple pendulum, 2.0 m in length, is released from rest when the support string is at an angle of 25° from the vertical. What is the speed of the suspended mass at the bottom of the swing?
Initially, an inductor with no resistance carries a constant current. Then the current is brought to a new constant value twice as large. After this change, when the current is constant at its higher value, what has happened to the emf in the inductor?
1.It is larger than before the change by a factor of 4. 2.It is larger by a factor of 2. 3.It has the same nonzero value. 4.It continues to be zero. 5.It has decreased.
Intensity: The intensity of the waves from a point source at a distance d from the source is I. What is the intensity at a distance 2d from the source?
A. 4I
B. 2I
C. I/2
D. I/4
E. I/
A 60-kg man is one fourth of the way up a 10-m ladder that is resting against a smooth, frictionless wall. If the ladder has a mass of 25 kg and it makes an angle of 60° with the ground, find the force of friction of the ground on the foot of the ladder
a. 1.4E+1 N b. 1.6E+2 N c. 2.4E+2 N d. 2.7E+2 N e. 4.2E+3 N