Une Phys 1010 Midterm Review – Exam Questions And Correct Answers

UNE PHYS 1010 MIDTERM REVIEW – EXAM
QUESTIONS AND CORRECT ANSWERS
Question 1
What condition would increase the chance of a flow being turbulent?
• Velocity of the flow increases
• Radius of the tube/pipe decreases
• Viscosity of the fluid increases
• Gravity
Correct Answer
Velocity of the flow increases



Question 2
If the force applied to a lever arm is decreased in half, the torque is ___ by ____.
Correct Answer
decreased by a factor of two



Question 3
Dialysis is the transport of other materials from _____ to _____ water concentrations.
Correct Answer
high to low



Question 4
In inelastic collisions, objects will _____ ______upon collision
Correct Answer
stick together




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,Question 5
Why is mercury used in barometers rather than water?
Correct Answer
Mercury is denser than water



Question 6
True or False: The majority of energy consumed by the human body is used to
maintain the basal metabolic rate
Correct Answer
True



Question 7
Which property is NOT characteristic of Laminar Flow?
• Layers flow without mixing
• A tapered velocity profile in a tube or pipe
• Smooth flow
• Small eddies and mixing between layers
Correct Answer
Small eddies and mixing between layers



Question 8
For a larger viscosity fluid, the flow rate will (increase, decrease, or remain the same?
Correct Answer
Decrease



Question 9
True or False: Work is done on a locked door that remains closed while you try to pull
it open.

Correct Answer
False (no movement/distance)




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,Question 10
Osmosis is the transport of water molecules from _____ to _____ water concentrations.
Correct Answer
high to low



Question 11
What are the units of Angular Velocity?
(rotational quantity)
Correct Answer
Radians per Second



Question 12
If you double the radius, the angular velocity for a fixed tangenital velocity will ___ by
____
Correct Answer
decrease by half



Question 13
What are the units of Tengenital Velocity?
(rotational quantity)
Correct Answer
Meters per Second



Question 14
If the net work on a system is zero, and the mass is constant, the final velocity must
be ______ to the initial velocity.
Correct Answer
equal




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, Question 15
How can a small force impart the same momentum to an object as a large force?
Correct Answer
The small force must be applied over a longer period of time than the larger force



Question 16
The water pressure from a hose originating from a tower on a hill will be (greater, less
than, equal to ?) one originating in the valley due to an increase in pressure with
height

Correct Answer
greater



Question 17
True or False: Momentum is conserved in isolated systems
Correct Answer
True



Question 18
If you double the distance between two objects, their gravitational attraction will ___
by ____
Correct Answer
decrease by a factor of 1/4



Question 19
A box is pulled across a floor. If the magnitude of the force was increased but the
angle was kept constant, the work done by the force would (increase/decrease)
Correct Answer
Increase




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