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Module 2 Physics
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1.
2 points
As an object slides down a slope, its,
kinetic energy increases and its potential energy increases.
kinetic energy increases and its potential energy decreases
kinetic energy decreases and its potential energy increase
2.
2 points
What is the atomic number of an element?.
The number of electrons in the atom.
The number of protons in the atom.
The number of neutrons in the atom.
3.
2 points
1 Pascal equals.
105 N/m2
1 N/m2
1 bar
4.
2 points
Select the correct statement from the following.
Temperature is the only factor which can affect the state in which matter exists
Matter can only exist in one of three states.
As temperature rises a solid will always become a liquid and then a gas
5.
2 points
is an outward force apparent,
inertia force
centrifugal force
centripetal force
6.
2 points
The heat required to change a liquid to a gas at constant temperature is the heat of.
fusion
vaporisation
condensation
7.
2 points
What is the mass number of an element?.
Number of neutrons and protons.
Number of electrons and protons.
Number of electrons and neutrons.
8.
2 points
When a twisting force is applied to a bolt, what stress is exerted on to the head?
Shear
Compressive
Torsion.
9.
2 points
Power is the rate of doing work. It is measured in.
Joules/Seconds
Watts/Seconds.
Joules * Seconds.
10.
2 points
Change from solid to gas state is called.
sublimation.
state leap.
transformation.
11.
2 points
Which of the following has no units?
Elasticity
Stress
Strain
12.
2 points
The SI unit of acceleration is,
metre per second squared (m/s2)
metre per second (m/s)
square metre (m2)
13.
2 points
The SI unit of mass is the.
kilogram (kg)
pound (lb)
A. metre (m).
14.
2 points
The SI unit for work is the.
Joule
Watt
horsepower
15.
2 points
What is atomic mass?
Number of neutrons.
Number of protons with the number of neutrons.
Number of protons.
16.
2 points
in its state of motion including changes to its speed and direction or the state of rest.
inertia force.
centrifugal force
centripedal force
17.
2 points
Surface molecular attraction between two different molecules is.
gravitational
Cohesive
Adhesive
18.
2 points
Two couples with magnitude F act against each other. The resultant will be. . .
-2F
2F
0
19.
2 points
F = ma is an equation which expresses?
Newton’s 1st law
Newton’s 2nd law
Newton’s 3rd law
20.
2 points
An isotope of an element has.
the same atomic number but a different mass number.
the same mass number but a different atomic number.
a different mass and atomic number.
21.
2 points
There are solids, liquids and gases present in the universe and every unit of theirs occupy some space. This is called.
compound
matter.
mass
22.
2 points
The SI unit of force is the...
Newton (N)
Metre (m)
Pascal (Pa)
23.
2 points
The SI unit of Power is the.
Volt
Pascal
Watt
24.
2 points
The smallest part of an element is.
an atom.
a compound.
a molecule.
25.
2 points
A valance electron is an electron.
in the innermost shell.
in the outermost shell.
which is not within an atom.
26.
2 points
The nucleus of an atom contains.
electrons and neutrons.
protons and neutrons.
protons and electrons.
27.
2 points
What is acceleration?
Rate of change of velocity.
Rate of change of movement.
Rate of change of position.
28.
2 points
For every action there is an equal and opposite reaction.' This is known as.
Newtons first law
Newtons second law
Newtons third law
29.
2 points
What is the rate of gravity?
12.7 m/s2
0.981 m/s2
9.81 m/s2
30.
2 points
Non-metals form
metallic bonds
covalent bonds
ionic bond.
31.
2 points
A quantity which has size and direction is called
Vectorial
Scalar.
Moment.
32.
2 points
1 Watt,
1kg/h
1 Joule/s
1 HP.
33.
2 points
What form of heat is used to turn a solid into a liquid?
Fusion.
coefficient of heat.
specific heat.
34.
2 points
The SI unit of velocity is the
metre per second (m/s)
metre (m)
metre per second squared (m/s2)
35.
2 points
Water is a/an...
compound.
mixture
element
36.
2 points
A positive ion exist of...
has missing electrons.
is a gain electrons
has extra electrons.
37.
2 points
What is the ratio of load to effort called?
Mechanical advantage
Velocity ratio
Mechanical ratio
38.
2 points
A compound such as water can exist in how many states?
2
1
3
39.
2 points
towards a point as to a centre,
centrifugal force
inertia force
centripetal force
40.
2 points
The formula for calculating stress is.
load multiplied by cross sectional area.
area divided by load.
load divided by cross sectional area.
41.
2 points
Productivity is,
Output/Input
Input/Output
Input*Output
42.
2 points
1 Newton is equal to.
1 kilogram meter per second per second
1 joule per second.
1 kilogram of force.
43.
2 points
A millilitre is equal to.
One million litres.
One millionth of a litre
One thousandth of a litre
44.
2 points
The stress created when a material is pulled
compression
tension
shear
45.
2 points
A Scalar quantity has.
magnitude only.
sense and direction.
sense, magnitude and direction.
46.
2 points
Two or more elements that are chemically bonded together and have an even mass distribution form a.
mixture.
substance.
chemical compound.
47.
2 points
Molecules of the same compound are...
cohesive forces.
gravitational forces.
adhesive forces.
48.
2 points
If a square has an area of 9m2, one side is.
3m
1m
9m
49.
2 points
The SI unit of energy is the
Watt (W)
Pascal (Pa)
Joule (J)
50.
2 points
Young's modulus (E) is.
stress x strain
strain / stress
stress / strain.
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