In 1921, the Nobel Prize in physics was awarded to ________ for his work on the particle nature of light
Fill in the blank(s) with correct word
Albert Einstein
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Projectile Motion: A projectile is fired at an angle above the horizontal at a location where g = 9.8 m/s2. The initial x and y components of its velocity are 86.6 m/s and 50 m/s respectively. At what angle was the projectile fired above the horizontal?
A. 45° B. 60° C. 30° D. 90° E. 75°
Which property of the Solar nebula was the most influential in giving the planets their characteristics?
A. temperature B. volume C. mass D. pressure
If the distance between two point charges is doubled, the mutual force between them will be changed by what factor?
a. 4 b. 2 c. 1/2 d. 1/4 e. 1
Negative work can be done
a. by friction on the tires while a car is accelerating without skidding. b. by a spring at the bottom of an elevator shaft when it stops a falling elevator. c. by a hand catching a ball. d. by all of the above. e. only by (b) and (c) above.