1) If the distance between two objects becomes 4 times larger, how will that affect the gravitational force between them?

a) it will be 1/4 as much

b) it will be 16 times greater

c) it will be 4 times greater

d) it will be 1/16 as much

2) A car is driving at an initial velocity of 12 m/s. it accelerates at a rate of 4 m/s2 for 7 seconds. How fast is the car going after it is done accelerating?

a) 40 m/s

b) 36 m/s

c) 21 m/s

d) 4 m/s

3) a projectile is launched off a meter high building. it's launch angle is 0". Assuming no air resistance, how long will it take the project to hit the ground? ay= -9.8 m/s2

a) 20 s

b) 10 s

c) 4.5 s

d) 6.2 s

4) if an object experiences a constant acceleration, then there is no net force acting on it. True or False

5) Pool Ball A is moving towards Pool ball B. Ball A has a mass of 0.4 kg and a velocity of 0.25 m/s. Ball B has the same mass but it is stationary. If the balls collide and stick together, what is their final velocity?

a) 0.15 m/s

b) 0.5 m/s

c) 0 m/s

d) 0.25 m/s

6) What is the fluid pressure at a depth of 60 m in the ocean? Mass density of ocean water: 1036 kg/m3

a) 169 N

b) 609,168 N

c) 36,681 N

d) 62, 160 N

7) Sitting under a heat lamp is a way to increase your internal energy by only doing work (Q=0) TRUE OR FALSE?

8) Suppose that you want to build a Carnot engine that is 100% efficient. The temperature of the hot reservoir be?

a) 500 K

b) 0 K

c) 1000 K

d) 1200 K

9) How many octaves are between 17 Hz and 1088 Hz

a) 6

b) 64

c) 8

d) 32

10) If a sounds intensity becomes 400 times greater, what is the change in intensity in decibels

a) 400 dB

b) 26 dB

c) 40 dB

d) 20 dB

11) Doubling the tension force on a string will_____ the speed of the wave on the string

a) none of these

b) quadruple

c) double

d) triple

12) What is the speed of a wave the travels 500 m in 6 minute? Answer in meters per second

a) 1.4 m/s

b) 180,000 m/s

c) 0.012 m/s

d) 3000 m/s

13) Adding more resistors in a parallel circuit will_____ the overall resistance

a) double

b) increase

c) decrease

d) not affect

14) you are working with a transformer that has an output of 1200 V and 500 turns in the primary. if there are 200 turns in the secondary what must the input voltage be?

a) 83.3 v

b) 3000 V

c) 1200 V

d) 4800 V

15) If the temperature of a blackbody doubles, the peak wavelength will be half as much TRUE OR FALSE

16) Suppose you have the following conditions with Snelll's Law:

01=47 02=29 n1= 1.66

what is n2?

a) 2.5

b) 0.98

c) 1.1

d) 2.7

17) Suppose you are viewing a diffraction pattern created by green laser light ( A= 450 nm). through double slits that are 0.09 mm apart. the displacement between the bright spots is 2cm. What is the distance between the laser and the projected pattern?

a) 4 m

b) 4000 cm

c) 20.3 mm

d) 0.0004 mm