Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
62.6cm hg
72.5cm hg
79.5cm hg
85.9cm hg
Correct answer is D
No explanation has been provided for this answer.
Greatest in X
Greatest in Y
Greatest in Z
Same in each one
Correct answer is B
Gravity is always directed in a vertical fashion at X (i.e. 90 degrees which is where tension will be minimum).
The more horizontally aligned the cable is, the more it will pull horizontally. This increased horizontal pull will increase the tension in the cable.
graph 2 corresponds to the highest velocity
graph 1 corresponds to zero velocity
graph 3 corresponds to a particle moving in the negative x direction
graph 2 corresponds to a particle moving in the positive x direction
Correct answer is B
At constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path thus, a constant velocity means motion in a straight line at a constant speed.
both M and N have acquired negative charges
both M and N have acquired positive charges
M has acquired negative charge and N positive charge
N has acquired negative charge and M positive charge
Correct answer is D
No explanation has been provided for this answer.
V/8
V/4
V/3
V/2
Correct answer is C
Using the voltage- divider method which states that the output voltage is directly proportional to the input voltage and the ratio of R1 and R2, given by:
\(V_{a}\) = \(\frac{R_{a}}{R_{T}}\times V_{T}\)
\(R_{T}\) = \(1 + \frac{4\times4}{4+4}\)
⇒ \(R_{T}\) = \(3\Omega\)
\(V_{1}\) = \(\frac{1}{3}V\)