In the SI system of units, power has the same units as
A) Js/m.
B) Jm/s.
C) Nm/s.
D) W/m.
E) W/s.
C
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The three fundamental quantities studied in Chapter 1 are length, mass, and ______________
Fill in the blank(s) with correct word
A 1.6-kg ball is attached to the end of a 0.40-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point of its swing, when it is moving horizontally, the ball collides with a 0.80-kg block initially at rest on a horizontal frictionless surface. The speed of the block just after the collision is 3.0 m/s. What is the speed of the ball just
after the collision? a. 1.7 m/s b. 1.1 m/s c. 1.5 m/s d. 1.3 m/s e. 2.1 m/s
Nearly every aspect of astronomy is related in some way to the existence of gravity and to the motions which are responsible for a balance against gravity. How does this balance play a role for the miscellaneous objects of the solar system (i.e
, the asteroids and comets)? How can some aspect of this be used as a tool to determine masses in the solar system?
The solar winds blow outward from:
A) sunspots. B) flares. C) the entire photosphere. D) coronal holes. E) the Sun's poles only.