Room temperature is about 20 degrees on the:
A. Kelvin scale
B. Celsius scale
C. Fahrenheit scale
D. absolute scale
E. C major scale
Answer: B. Celsius scale
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The period-luminosity relationship is primarily used for main-sequence stars
a. True b. False Indicate whether the statement is true or false
The ________ that is affecting the motion of the Local Group is believed to be a yet unseen ________.
A. Great Attractor; cluster of superclusters B. Great Attractor; super massive black hole C. Great Wall; super massive black hole D. Great Wall; Great Attractor
At a location where g = 9.80 m/s2, a projectile returns to its original height after 4.08 seconds, during which time it travels 76.2 meters horizontally. If air resistance can be neglected, what was the projectile's initial speed?
What will be an ideal response?
When you walk forward on a scooter that was previously at rest, how do you calculate the total momentum of you and the scooter?
a. You don't have to calculate it; you already know that it is zero. b. You measure how far you move forward and how far the scooter moves backward, and average the two. c. You measure how far you move forward and how far the scooter moves forward, and add the two. d. You calculate the forces on the scooter in newtons by adding mass and acceleration. e. You calculate the forces on the scooter in newtons by multiplying mass and acceleration.