which of the following pairs of physical quantities comprises vectors?
capacitance and inductance
force ratio and velocity ratio
friction and momentum
energy and power
electric field potential and electric field intensity
Correct answer is C
Friction and Momentum both have magnitudes and directions.
Which of the following has the highest surface tension?
cold water
soapy water
warm water
oily water
salty water
Correct answer is A
No explanation has been provided for this answer.
The half-life of a radioactive substance is 2 seconds. Calculate the decay constant
0.035s-1
0.151s-1
0.347s-1
0.576s-1
1.386s-1
Correct answer is C
λ=0.693T12=0.6932
= 0.347s-1