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WorksheetsHooke's law, Friction, and Heat Transfer Ch. 5-3, 5-4 and 24
Total questions: 32
Worksheet time: 58mins
The coefficient of kinetic friction between a floor and a box made of wood is
μ =.12 . How far does the box slide if it has an initial speed of Vi= 5.0 m/s?43 m
12 m
11 m
19 m
32 m
Andrew determines that he needs to apply a minimum of 18 N of force to make his heaviest textbook slide on a wooden table. If the book weights 6.0 kg, what is the coefficient of static friction between these two objects?
0.31
0.15
0.67
0.33
0.10
A 24 N wooden box is on the floor. How much force does it take to make the box slide if the coefficient of static friction
μ =0.14 ?3.4 N
0.0 N
24 N
86 N
170 N
If a boat sails north, in what direction will the friction force be?
south
west
east
down
north
What type of friction describes the tendency for objects to stick together until a certain force is applied?
static friction
sliding friction
viscous friction
kinetic friction
rolling friction
a 2.9 kg box is moving at 9.5 m/s on a frictionless plane. When will it stop?
12 s
28 s
0.31 s
never
3.3 s
What is the force of sliding friction between a block and the ground if the coefficient of kinetic friction is
μ =0.11 . and the block weights 16N?28 N
150 N
0.19 N
1.8 N
16 N
What is the other name for sliding friction?
static friction
kinetic friction
rolling friction
air resistance
Which of the following types of friction will have the smallest coefficients?
static friction
kinetic friction
rolling friction
air resistance
In rolling friction, larger wheels produce _______ friction than smaller wheels if you have the same coefficient.
less
more
Convection
involves electromagnetic radiation.
decreases when the contact area increases.
is the movement of heat through the motion of matter.
cannot be forced.
You have two identical containers, each holding 400 mL of water at 12 degrees celcius. You also have two identical rocks, except that Rock A is at 59 degrees celsius and Rock B is at 89 degrees Celsius. (The rocks have the same masses, compositions, sizes, and shapes.) You put one rock into each of the water cups at the same time. Which one of the following statements is true?
Rock B will lose thermal energy faster than Rock A.
Rock A will gain thermal energy faster than Rock B.
Rock A will lose thermal energy faster than Rock B.
Rock B will cause the water to boil, but Rock A will not.
Rock B will gain thermal energy faster than Rock A.
What is the defining characteristic of a perfect blackbody?
It reflects all radiation incident on it.
It absorbs all radiation incident on it.
It has a surface temperature of absolute zero.
It has a surface that reflects 50% of light evenly across all frequencies.
It looks black in ordinary white light.
Which of the following processes requires a physical medium (a solid, liquid, or gas) to transfer thermal energy from one object to another?
I. Conduction
II. Convection
III. Ratiation
I and III only
I, II, and III
I and II only
I only
II and III only
Two objects in thermal contact with each other can be said to be in thermal equilibrium if
they have identical temperatures.
they have identical specific heats.
they have identical masses.
they contain identical amounts of thermal energy.
It depends on the exact identities of the objects.
A 160 g rock at 10 degrees Celsius is completely immersed in 930 g of water at 60 degrees Celsius. Which one of the following statements is true right after the rock goes in?
The rock and the water give each other thermal energy, but the rock gives more than it gets.
The rock and the water give each other thermal energy, but the water gives more than it gets.
The water gives the rock thermal energy and gets no thermal energy in return.
The rock and water do not give each other any thermal energy.
The rock gives the water thermal energy and gets no thermal energy in return.
Think back to our heat transfer lab. In the conductivity section we looked at different materials to see how well they conducted heat. Which of the following materials was the best conductor.
plastic
copper
aluminum
zinc
Think back to our heat transfer lab. We had two stations on convection. A hotter fluid will ______ because it is _____ dense , a colder fluid will ______ because it is _______ dense. It is these differences in density that will cause convection currents.
sink, less, rise, more
rise, more, sink, less
rise, less, sink, more
sink, more, rise, less
A(n) __________ is a material that transfer heat well. A(n )__________ is a material that does allow heat to transfer easily.
insulation, conductivity
conductivity, insulation
insulator, conductor
conductor, insulator
Think back to the radiation station of our lab. Why did the black sand get hotter than the white sand?
The black sand reflects more wavelengths of electromagnetic radiation, thus making it hotter.
The black sand absorbs more wavelengths of electromagnetic radiation, thus making it hotter.
The white sand absorbs more wavelengths of electromagnetic radiation, thus making it cooler.
There is more than one form of heat transfer. Choose all that apply. ( On a test you will have to list them.)
radiation
conduction
convection
Think back to our lab. In the station on convection currents in a gas, the hot air was _______________ and the cold air in the current was _______________.
deoxygenated, oxygenated
oxygenated, deoxygenated
What force should be applied to compress a spring by 0.013 m if its spring constant is k = 1900 N/m?
1880 N
24.7 N
1900 N
19.5 N
