Quiz by Nicole Saville, created more than 1 year ago

Quiz on Statics, created by Nicole Saville on 27/10/2014.

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	Created by Nicole Saville about 10 years ago

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Statics

Question 1 of 32

1

What is accuracy?

Select one of the following:

How close the measurement is to the accepted value
The degree to which you measure
The skill of the experimenter
The level of uncertainty

Explanation

Question 2 of 32

1

The smallest scale increment on a measuring device is the...

Select one of the following:

Precision
Accuracy
Reliablity
Uncertainty

Explanation

Question 3 of 32

1

What does the level of uncertainty depend on?

Select one or more of the following:

Accuracy
Precision
Number of repeats

Explanation

Question 4 of 32

1

All experiments are uncertain

Select one of the following:

True
False

Explanation

Question 5 of 32

1

Which of these are systematic errors?

Select one or more of the following:

experimental set up
Human error
faulty equipment
inconsistent parallax error
reaction time
Zero errors on meters

Explanation

Question 6 of 32

1

Which of the following does not apply to random errors?

Select one of the following:

They reduce the accuracy
The reduce the precision
They can never be fully eliminated

Explanation

Question 7 of 32

1

Systematic errors can be totally eliminated

Select one of the following:

True
False

Explanation

Question 8 of 32

1

When adding or subtracting measured quantities, how do we find the uncertainty?

Select one of the following:

Add the absolute uncertainty of each
Add the percentage uncertainty of each
Multiply the percentage uncertainties together
Use the biggest absolute uncertainty

Explanation

Question 9 of 32

1

When multiplying or dividing quantities, how do we find the uncertainty?

Select one of the following:

Add the percentage uncertainty
Multiply the percentage uncertainties
Add the absolute uncertainties
Double the uncertainty

Explanation

Question 10 of 32

1

What is a scalar quantity?

Select one of the following:

A quantity with magnitude only
A quantity with magnitude and direction

Explanation

Question 11 of 32

1

Which of these are scalar quantities?

Select one or more of the following:

Distance
Speed
Velocity
Current
Acceleration
Mass
Density

Explanation

Question 12 of 32

1

How do you combine scalar quantities?

Select one of the following:

Add them
Multiply them
Resolve them

Explanation

Question 13 of 32

1

Momentum is a vector

Select one of the following:

True
False

Explanation

Question 14 of 32

1

Force is a scalar

Select one of the following:

True
False

Explanation

Question 15 of 32

1

How do you combine parallel vectors?

Select one of the following:

Add/subtract them
Multiply/divide them
Make them into a triangle and use pythagoras

Explanation

Question 16 of 32

1

How do you combine vectors that are at random angles relative to each other?

Select one or more of the following:

Add their magnitude and their angles
Resolve them
Use the parallelogram rule

Explanation

Question 17 of 32

1

Upthrust is...

Select one of the following:

The force on an object due to the difference in pressure when immersed in a fluid.
The contact force of water
The opposite of gravity

Explanation

Question 18 of 32

1

Weight is...

Select one of the following:

The force on an object due to gravity
Gravity
The mass of an object

Explanation

Question 19 of 32

1

What is the pulling force exerted by a string, chain, cable or similar object?

Select one of the following:

Tension
Normal reaction force
Weight
Upthrust

Explanation

Question 20 of 32

1

What is friction

Select one of the following:

A force resisting the parallel movement of two surfaces in contact
A force that slows down objects
A force which prevents objects from sliding

Explanation

Question 21 of 32

1

Which of these are fundamental forces?

Select one or more of the following:

Strong Nuclear
Weak Nuclear
Gravitational
Electromagnetic

Explanation

Question 22 of 32

1

In which direction does weight act?

Select one of the following:

Vertically downwards
Perpendicularly downwards to the object
Parallel to the surface

Explanation

Question 23 of 32

1

In which direction does the normal reaction force act?

Select one of the following:

Vertically upwards
Perpendicular to the surface producing it
Perpendicular to the object
Parallel to the object

Explanation

Question 24 of 32

1

If an object is in equilibrium it is static

Select one of the following:

True
False

Explanation

Question 25 of 32

1

What does equilibrium mean?

Select one of the following:

There are no forces acting on a body
There is no resultant force
A body is completely still
A body is balanced

Explanation

Question 26 of 32

1

What is a moment?

Select one or more of the following:

The turning effect of a single force
force x distance
force x perpendicular distance
weight x distance
force/distance
A pair of forces that are equal and opposite
The forces on an object

Explanation

Question 27 of 32

1

What is the principle of moments?

Select one of the following:

The sum of the clockwise moments of an object = the sum of the anticlockwise moments of an object
If an object is in equilibrium: the sum of clockwise moments = the sum of anticlockwise moments
The sum of anticlockwise moments on an object can never fully equal the sum of clockwise moments on an object

Explanation

Question 28 of 32

1

A couple of forces is two forces that are equal and opposite and acting in the same line

Select one of the following:

True
False

Explanation

Question 29 of 32

1

What is torque?

Select one or more of the following:

The moment of a couple
Fd
Fd/2
The resultant of two perpendicular forces
The distance of forces from the pivot

Explanation

Question 30 of 32

1

What is pressure measured in?

Select one or more of the following:

Nm^-2
Nm^2
N/m
Pa

Explanation

Question 31 of 32

1

Pressure = perpendicular force/area

Select one of the following:

True
False

Explanation

Question 32 of 32

1

Pressure = density x height x gravity

Select one of the following:

True
False

Explanation