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WorksheetsReview Quiz
Total questions: 25
Worksheet time: 55mins
Work is done when .....
a force is exerted on an object.
an object exerts force onto another object.
a force is exerted on an object causing the object to move.
an object does not move.
A boy uses this simple machine to lift a load. How does this machine help the boy to do work?
by changing the direction
by reducing total work
by decreasing distance
by reducing effort force
Which ramp will require the least amount of force?
A
B
C
D
A lever used to lift a heavy box has an input arm of 4 meters and an output arm of 0.8 meters. What is the mechanical advantage of the lever?
1
2.5
5
10
This 2000 N weight is raised 1 meter by pulling 4 meters of rope. What force was required to pull the rope?
Jeff is a landscaping contractor and lifts a rock weighing 600 Newtons by wedging a board under the rock. Jeff weighs 150 Newtons and puts all of his weight on the lever. How much mechanical advantage did the lever provide to Jeff in lifting the rock?
0
2
4
0.25
If two gear wheels are mounted on a common shaft then it's a ________ Gear Train.
Common
Compound
Complying
Shafting
True or False: Two meshed gears always rotate in opposite directions
True
False
When you have a system with a driving gear that is _______ than the driven gear you will increase torque and decrease speed.
smaller
bigger
same size
thicker
Specific Heat
the amount of energy it takes to raise one gram of a substance by one degree Celsius
The internal energy of an object
The measure of the kinetic energy of an object's molecules
The 1st law of Thermodynamics
Energy can not be created or destroyed. It just changes forms.
Energy can only be created by the sun
Some energy is lost to the environment.
Conductor
A material that thermal energy travels through easily
A material that energy does NOT transfer through easily
Energy that travels in the form of electromagnetic waves
Insulator
A material the energy does NOT transfer through easily
A material that thermal energy travels through easily
The measure of the kinetic energy of an object’s molecules
PETROL - Renewable / Non-renewable ?
Renewable
Non-renewable
What is the current in from a 12 V source if the resistance is 10 W?
120 Amps
12 Amps
0.83 Amps
1.2 Amps
A parallel circuit has 6 ohm, 10 ohm, 12 ohm and 15 ohm resistors and a voltage of 10V, what is the current?
answer given in nearest whole number
1.0
2.0
3.0
4.0
If a computer has 10.0A of current and 11Ω of resistance, what is its voltage? (LT2/DOK1)
0.9V
1.1V
55V
110V
