Question 4866:

The mechanical advantage (MA) of an inclined plane depends on ____________

A. Its length
B. Its height
C. The product of its length and height
D. The ratio of its length to its height

Question 4867:

The quality (timber) of sound depends

A. Amplitude
B. Frequency
C. Harmonies
D. Wavelength

Question 4868:

Which of the following consist entirely of scalar quantities:

A. Pressure, work and electric potential
B. Force, momentum and distance
C. Velocity, energy and impulse
D. Mass, time and temperature

Question 4869:

A car accelerates from \(3 ms ^{-1}\) to \(100 ms\) in \(35 s\). Calculate the acceleration of the car.

A. \(2 ms ^{2}\)
B. \(3 ms 2\)
C. \(4 ms ^{2}\)
D. \(5 ms ^{-2}\)

Question 4870:

A body bf mass \(2 kg\) moves round a circle of radius \(2 m\) with a constant speed of \(165 m / s\). Calculate the forceffovard the centre.

A. \(40 N\)
B. \(50 N\)
C. \(80 N\)
D. \(100 N\)