Physics Pre-test

40 Questions | By Mmmaxwell | Last updated: Mar 22, 2022 | Total Attempts: 2541

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This is the Physics Pre-test.

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1.

100mL is equal to
- A.
  
  1kL
- B.
  
  10-6 µL
- C.
  
  0.1 L
- D.
  
  0.01 ML
2.

The linear momentum of a particle is the product of its mass and its velocity. Consequently, the SI units of linear momentum
- A.
  
  Kg/ (m/s)
- B.
  
  Kg · m · s
- C.
  
  kg · m/s
- D.
  
  None of these
3.

Newtow’s law of gravitation is an inverse-square law. When separated by a distance d, two unlike charges exert mutual attractive forces of magnitude F on each other. If the separation distance between these charges are doubled, how strong are the mutual forces now?
- A.
  
  F/4
- B.
  
  F/2
- C.
  
  2F
- D.
  
  4F
4.

An astronaut weighs 80N on earth where the acceleration due to gravity is approximately 10 m/s². The mass of the astronaut at a point in space where the acceleration due to gravity is 4 m/s² is roughly
- A.
  
  80 kg
- B.
  
  32 kg
- C.
  
  20 kg
- D.
  
  8 kg
5.

Copper is a better conductor than paper. Relative to the resistance of a sample of copper, the resistance of an identically shaped sample of paper is
- A.
  
  Larger
- B.
  
  The same
- C.
  
  Smaller
- D.
  
  None of these
6.

If an object has a constant velocity, then it:
- A.
  
  Moves with unchanging speed in a straight line.
- B.
  
  Moves with unchanging speed along a circle.
- C.
  
  Does not move at all.
- D.
  
  Either A or C.
7.

The SI prefix ‘milli’ means
- A.
  
  10^-6
- B.
  
  10^+3
- C.
  
  10^-3
- D.
  
  10^+6
8.

Which of the following is not an SI base quantity?
- A.
  
  Length
- B.
  
  Mass
- C.
  
  Weight
- D.
  
  Time
9.

The unit of mass in the SI system
- A.
  
  Pound
- B.
  
  Gram
- C.
  
  Kilogram
- D.
  
  None of these
10.

The metric prefix for 1/1000
- A.
  
  Centi
- B.
  
  Kilo
- C.
  
  Micro
- D.
  
  None of these
11.

One milliliter is equal to one
- A.
  
  Cubic decimeter
- B.
  
  Cubic centimeter
- C.
  
  Cubic meter
- D.
  
  None of these
12.

In terms of fundamental SI units, one newton is
- A.
  
  1 kg · m^2/s^2
- B.
  
  1 kg · m^2/s
- C.
  
  1 kg · m/s^2
- D.
  
  None of these
13.

Two charged particles attract each other with a force of 1.0 N. If the magnitude of each charge is doubled and the distance between them is unchanged, the force will be
- A.
  
  4.0 N
- B.
  
  0.5 N
- C.
  
  1.0 N
- D.
  
  0.25 N
14.

Which of the following bodies has the largest kinetic energy?
- A.
  
  Mass 2M with speed 3V
- B.
  
  Mass 3M with speed 2V
- C.
  
  Mass M with speed 4V
- D.
  
  Mass 3M with speed V
15.

When an object thrown vertically upwards reaches its maximum height, it has
- A.
  
  Zero acceleration and zero velocity
- B.
  
  Zero acceleration and negative velocity
- C.
  
  Negative acceleration and zero velocity
- D.
  
  Negative acceleration and negative velocity
16.

A battery of 3.0 V is placed across a wire of a 5.0 W lamp. The resulting current in the wire is
- A.
  
  0.60 A
- B.
  
  15 A
- C.
  
  60 A
- D.
  
  125 A
17.

An object attached to one end of a spring makes 20 vibrations in 10 seconds. The period of the object is
- A.
  
  2 Hz
- B.
  
  2 seconds
- C.
  
  0.5 seconds
- D.
  
  0.5 Hz
18.

How many nanometers are there in one meter?
- A.
  
  10^-9
- B.
  
  10^+3
- C.
  
  10^-3
- D.
  
  10^+9
19.

A kilowatt-hour is a unit of:
- A.
  
  Time
- B.
  
  Power
- C.
  
  Energy
- D.
  
  Voltage
20.

Which of the following has three significant figures?
- A.
  
  305.0 cm
- B.
  
  1.00081 kg
- C.
  
  0.0500 mm
- D.
  
  8.060 x 1011 m^2
21.

An apple falls from a tree. Compare its kinetic energy, K, to its potential energy, U.
- A.
  
  K decreases and U decreases
- B.
  
  K is constant and U increases
- C.
  
  K increases and U decreases
- D.
  
  K increases and U is constant
22.

The resistance of an object to changes in motion
- A.
  
  Acceleration
- B.
  
  Density
- C.
  
  Inertia
- D.
  
  None of these
23.

The amount of space an object takes up
- A.
  
  Density
- B.
  
  Speed
- C.
  
  Mass
- D.
  
  None of these
24.

Distance traveled in a period of time
- A.
  
  Motion
- B.
  
  Acceleration
- C.
  
  Speed
- D.
  
  None of these
25.

W hich of these is the independent variable in a distance-time graph
- A.
  
  Time
- B.
  
  Distance
- C.
  
  Speed
- D.
  
  None of these