midterm physics 2

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1.
1 point
Enthalpy is a measure of randomness or disorder in a system.
2.
1 point
the faster a fluid is moving the less pressure it exerts.
3.
1 point
Newton's second law of motion has to something to do with
4.
1 point
states that any object that is partially or completely submerged in a fluid is buoyed up a force equal to the weight of the fluid that the object displaces
5.
1 point
The specific heat of water and aluminum is 4.186 and 0.900 kj/kg C. An 800 g aluminum teakettle contains 2.00 kg of water at 15.0 C. How much heat is required to raise the temperature of the water (and kettle) to the boiling point of pure water?
6.
1 point
how can some insects walk on water?
7.
1 point
An incompressible fluid, like water, flowing through a pipe will speed up if the pipe gets wider
8.
1 point
The only force acting on a projectile is
9.
1 point
Adhesion is the clinging together of molecules/atoms of two different substances
10.
1 point
It takes longer to cook food in boiling water at high altitudes
11.
1 point
A submarine is submerged in water, while a blimp is submerged in air. In each a pascal force must balance the weight of the vessel.
12.
1 point
Strong, naturally occurring winds can damage structures through
13.
1 point
Two guys have different masses. The guy with a bigger mass has greater weight than the guy with smaller mass in the presence of a gravitational field. This is an application of the __ law
14.
1 point
The absolute temperature scale is
15.
1 point
force per unit area
16.
1 point
Why do swimmers float better in the ocean than in a lake?
17.
1 point
Hot fluids rise and cool fluids sink in
18.
1 point
People need seatbelts to prevent injuries from the tendency of the body to surge forward because of collisions. This tendency follows the __ of motion
19.
1 point
A physical quantity that is proportional to the average kinetic energy of translation of particles in matter.
20.
1 point
2 atmospheres is equal to
21.
1 point
Steel can float if shaped like a boat, because in that shape it can displace as much water as its own weight.
22.
1 point
Ice is more dense that water since it is a solid
23.
1 point
When a material is hot, it has more thermal energy than when it is cold.
24.
1 point
Which process shows an increase in entropy?
25.
1 point
At what temperature reading are the Fahrenheit and Celsius scale the same?
26.
1 point
Pressure Depends on
27.
1 point
lower up the mountains than at sea level
28.
1 point
The lower the pressure on a liquid, the easier it is to make it boil
29.
1 point
Which of the following is a unit of pressure
30.
1 point
Which of the following is true about the x component of a projectile?
31.
1 point
The second law of thermodynamics has a lot to do with
32.
1 point
simply mass per unit volume
33.
1 point
A wood-burning fireplace has a chimney which allows the heated air to rise and escape the house. How then does a fireplace then heat the room?
34.
1 point
Example of Thermal Expansion
35.
1 point
You squeeze a tube of toothpaste. The pressure of the toothpaste does not just go up at the place where you are squeezing it. It goes up by the same amount everywhere in the tube. This is an application of
36.
1 point
Oil, for example, flows more easily than molasses. This is because molasses has a higher viscosity, which is a measure of resistance to fluid flow.
37.
1 point
Which of the following is NOT a unit of heat?
38.
1 point
The freezing point of a solution, such as salt water, is lower than the freezing point for the solvent by itself.
39.
1 point
In an airplane wing, air at the bottom must travel farther, so it moves faster, and the pressure there is lower, creating lift.
40.
1 point
refers to gases and liquids