Author Question: The volume coefficient of thermal expansion for gasoline is 950 10-6 K-1. By how many cubic ... (Read 35 times)

jake · **on:** Jul 29, 2018

The volume coefficient of thermal expansion for gasoline is 950 10-6 K-1. By how many cubic centimeters does the volume of 1.00 L of gasoline change when the temperature rises from 30C to 50C?

A) 6.0 cm3
B) 12 cm3
C) 19 cm3
D) 37 cm3

Question 2

A ball is projected upward at time t = 0 s, from a point on a flat roof 90 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground.

The initial velocity of the ball is Consider all quantities as positive in the upward direction. The vertical velocity of the ball when it is above the ground is closest to A) -81 m/s.
B) -64 m/s.
C) -48 m/s.
D) -32 m/s.
E) -97 m/s.