A person who normally weighs 700 N is riding in a rather swift elevator that is moving at a constant speed of 9.8 m/s. If this person is standing on a bathroom scale inside the elevator, what would the scale read?
A) more than 700 N
B) less than 700 N
C) 700 N
D) It could be more or less than 700 N, depending on whether the elevator is going up or down.
C
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Pressure in a Liquid: The Tonga Trench in the Pacific Ocean is 36,000 feet deep. Assuming that sea water has an average density of 1.04 g/cm3, calculate the absolute (total) pressure at the bottom of the trench in atmospheres. (1.00 in = 2.54 cm, 1.00 atm = 1.01 × 105 Pa)
A. 1.1 × 103 atm B. 1.1 × 108 atm C. 1.1 × 105 atm D. 1.1 × 106 atm E. 2.1 atm
When cottonseed oil (a liquid) is hydrogenated, the solid fat called ______________ is obtained
Fill in the blank(s) with correct word
Newton showed that Kepler's laws are ________
A) seriously in error B) the key to proving that Earth orbits our Sun C) actually only three of seven distinct laws of planetary motion D) natural consequences of the law of universal gravitation
Suppose that, as you sit in your classroom, you see two balls fall to the floor and hit at exactly the same time
According to the theory of relativity, other people sitting in the classroom with you will not agree that the balls hit the floor at the same time. Indicate whether the statement is true or false