Question 1 of 5
45 total questions
How far from a hill should a boy stand to hear the echo of his clap 1 .6s later? [Speed of sound in air is 340ms-1]
A186m
B272m
C544m
D1088m
E2000m
Which of the following conclusion(s) can be drawn from Newton’s second law of motion? Force is proportional to
I. the product of mass and acceleration
II. the product of mass and velocity
III. Impulse
AI only
BII only
CIII only
DII and III only
EI, II and III
A voltage supply of 12V r.m.s. and frequency 90Hz is connected to a 4 ω resistor. Calculate the peak value of the current
A48.8 A
B30.0 A
C27.5 A
D4.2 A
E3.0A
The general equation of a wave CANNOT be written as
Ay = A Sin [2 π (\(\frac{t}{T}\) ± Xλ)]
By = A Sin [wt ± kx]
Cy = A Sin [2 \(\frac{\pi}{\lambda}\) (vt ± x)]
Dy = A Sin [2π (ft ± \(\frac{X}{\lambda}\) )]
Ey = A Sin 2 π f(T ± \(\frac{X}{\lambda}\))]
Which of these expresses the relationship between the earth’s magnetic field FE, and the field’ FB due to a magnet at neutral points? FE is
Aequal and opposite to FB
Bequal to and in the same direction with FB
Cgreater than and in the same direction with FB
Dgreater than and opposite to FB
Eless than and opposite to FB
Question Navigator
Current
