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Q 1/50
Score 0
Which of the following is equivalent to 2.5 x 10^3 in standard notation?
30
25
0.0025
2500
0.00025
Q 2/50
Score 0
Convert 3.75 x 10^6 seconds to minutes.
30
62500
375
37.5
6250
50 questions
Q.
Which of the following is equivalent to 2.5 x 10^3 in standard notation?
1
30 sec
Q.
Convert 3.75 x 10^6 seconds to minutes.
2
30 sec
Q.
A scientist conducted an experiment to determine the boiling point of a substance. In three trials, the boiling point was measured as 99.5°C, 99.7°C, and 99.6°C. What can be said about the accuracy and precision of the measurements?
3
30 sec
Q.
Two students measure the length of a wooden stick. Student A obtains a measurement of 50.3 cm, while student B obtains a measurement of 48.9 cm. Which statement is accurate about their measurements?
4
30 sec
Q.
A digital scale is used to measure the mass of an object. The scale displays a value of 15.7 grams. Which statement is accurate about the accuracy and precision of the measurement?
5
30 sec
Q.
Which type of error occurs consistently in all measurements of a certain experiment?
6
30 sec
Q.
In an experiment, a scientist measures the temperature of a liquid using a thermometer. However, the thermometer is slightly damaged and consistently reads 2 degrees higher than the actual temperature. What type of error is this?
7
30 sec
Q.
A student is conducting an experiment to measure the time it takes for a pendulum to complete one full swing. However, due to the student's inconsistent pushing of the pendulum at different intervals, the time measurements vary significantly. What type of error is this?
8
30 sec
Q.
A scientist is conducting an experiment to measure the volume of liquid in a graduated cylinder. However, the scientist accidentally reads the measurement from the wrong marking on the graduated cylinder, resulting in consistently inaccurate readings. What type of error is this?
9
30 sec
Q.
A student measured the length of a pencil as 15.5 centimeters, but the actual length is 14.2 centimeters. What is the percent error in their measurement?
10
30 sec
Q.
Which of the following quantities is a scalar?
11
30 sec
Q.
Which of the following statements is true about scalars?
12
30 sec
Q.
Vector addition is the process of combining two or more vectors to form a single vector. Which of the following statements about vector addition is correct?
13
30 sec
Q.
Two vectors have magnitudes 7 and 5. The angle between them is 60 degrees. What is the magnitude of their resultant vector?
14
30 sec
Q.
In vector addition, which of the following is true when adding vectors of opposite directions?
15
30 sec
Q.
Vector A has a magnitude of 8 units and is oriented at an angle of 45 degrees with the positive x-axis. Vector B has a magnitude of 10 units and is oriented at an angle of 120 degrees with the positive x-axis. What is the magnitude of the resultant vector when vector A and vector B are added together?
16
30 sec
Q.
What is the vector in component form for the vector with an x-component of 4 and a y-component of -2?
17
30 sec
Q.
Given a vector with an x-component of -2 and a y-component of 5, what is the magnitude of the vector?
18
30 sec
Q.
A car is traveling at a constant speed of 60 km/h. How long does it take for the car to travel a distance of 120 kilometers?
19
30 sec
Q.
A cyclist covers a distance of 50 kilometers in 2 hours. What is the average speed of the cyclist during this time?
20
30 sec
Q.
An object is thrown vertically upwards with an initial velocity of 20 m/s. How long does it take for the object to reach its highest point?
21
30 sec
Q.
Which graph represents constant velocity?
22
30 sec
Q.
What is the definition of inertial frames of reference?
23
30 sec
Q.
Which of the following statements accurately describes velocity?
24
30 sec
Q.
Which of the following factors can affect the stopping distance of a vehicle?
25
30 sec
Q.
An object is moving with a constant velocity of 20 m/s. What does this mean?
26
30 sec
Q.
According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its:
27
30 sec
Q.
A soccer ball is kicked with a force of 20 Newtons. According to Newton's second law of motion, what will happen to the acceleration of the ball if the force is doubled?
28
30 sec
Q.
When a soccer player kicks a ball, which law of motion explains why the player's foot experiences a backward force?
29
30 sec
Q.
An object with a mass of 5 kg experiences a net force of 10 N. According to Newton's second law of motion, what is the resulting acceleration of the object?
30
30 sec
Q.
Given two vectors A = [2, -1, 4] and B = [-3, 0, 5], what is the dot scalar product of A and B?
31
30 sec
Q.
Given two vectors A = [3, -2, 5] and B = [4, 1, -2], what is the dot scalar product of A and B?
32
30 sec
Q.
Which of the following factors does not affect the magnitude of kinetic friction?
33
30 sec
Q.
Which type of friction is responsible for the heat generated when rubbing your hands together?
34
30 sec
Q.
Which of the following statements is true about static friction?
35
30 sec
Q.
Which of the following factors affects the momentum of an object?
36
30 sec
Q.
A bowling ball and a tennis ball are rolling towards each other. They collide and then stick together. Which of the following statements accurately describes the momentum of the system before and after the collision?
37
30 sec
Q.
A car with a mass of 1500 kg accelerates from rest to a velocity of 20 m/s in 10 seconds. What is the magnitude of the impulse experienced by the car?
38
30 sec
Q.
Which of the following quantities is a measure of the inertia of an object?
39
30 sec
Q.
Which of the following factors affects the impulse experienced by an object?
40
30 sec
Q.
How is the center of mass determined for an irregularly shaped object?
41
30 sec
Q.
Which of the following factors does NOT affect the position of the center of mass of an object?
42
30 sec
Q.
What happens to the position of the center of mass of an object when its mass distribution is not symmetrical?
43
30 sec
Q.
A ball is thrown horizontally with an initial velocity of 20 m/s from a height of 10 meters. How long will it take for the ball to hit the ground?
44
30 sec
Q.
A stone is thrown vertically upward with an initial velocity of 15 m/s. What is its final velocity when it reaches its highest point?
45
30 sec
Q.
What is the relationship between centripetal force and circular motion?
46
30 sec
Q.
What is the centripetal force required for an object in circular motion dependent on?
47
30 sec
Q.
Which of the following is an example of a non-contact force?
48
30 sec
Q.
Which of the following can change the state of motion of an object?
49
30 sec
Q.
Which of the following is an example of a contact force?
