A cyclist goes around a circular track once every 2 minutes. If the radius of the circular track is 110m, calculate the speed of the cyclist.

5.76 m/s

Explanation:

Applying,

S = d/t Equation 1

Where S = speed, d = distance, t = time.

For circular motion,

d = 2πr Equation 2

Where r = radius of the circular track, π = pie

Substitute equation 2 into equation 1

S = 2πr/t Equation 3

From the question,

Given: r = 110 m, t = 2 minutes = (2×60) = 120 s

Constant: π = 3.14

Substitute these values into equation 3

S = (2×3.14×110/120)

S = 690.8/120

S = 5.76 m/s

laticia draws the diagram below to show earth’s magnetic field.

answer

the arrows to the right of earth should point up.

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas