Other Physics Answers

What is the frequency of the following?

(a) Second hand of a clock

(b) Minute hand of a clock

(c) Hour hand of a clock

What happens to the wavelength of a wave when the frequency decreases?

What happens to the period of a wave when the frequency decreases?

What kind of motion should you impart to a stretched coiled spring (or Slinky) to provide a

(a) transverse wave?

(b) longitudinal wave?

All the waves shown have the same speed and amplitude in the same medium. Which wave has the

most

(a) wavelength,

(b) frequency, and

(c) period

A 20 kg box is pushed up a rough sloping ramp (30o relative to the incline) with a force of 300 N, parallel to the horizontal with constant speed. what is frictional force

A brass rod is 2m long at a certain temperature.what is its length for a temperature rise of 100kelvin if the expansivity of brass is 18 ×10^-6

The increase in the volume of 10cm of mercury when the temperature rises by 100celsius is 0.812cm.what is the cubic expansivity

the drawing, the weight of the block on the table is 422 N and that of the hanging block is 185 N. Ignoring all 

frictional effects and assuming the pulley to be massless, 

A marble was thrown upward at an angle of elevation of 30o

. It travelled 1.2s to reach the 

highest elevation. Find its initial velocity, Vo.