Other Physics Answers

What is the moment of inertial of a 3kg uniform rod with length 2 meters and radius

20cm, if the axis of rotation is located at (a) one end of the rod, (b) at the center of the

rod and (c) through the center?

How long (means time) must a 400 W electrical engine work in order to produce 300 kJ of work?

A 3 kg block moving to the right on a frictionless table at 4 m/s makes a head on collision with another 3 kg block moving 5 m/s to the left.

Determine the precision of these two approximate values

a) 32000ft

b) 1.20×10(--5)ms

Y=0.3sin(0.5x-50t). what is the maximum displacement of the particles from the equilibrium portion

Cody’s car accelerates from 0m/s to 45 m/s northward in 15 seconds. What is

the acceleration of the car?

What is the speed of sound in a helium gas at a pressure of 15000pa

How much potential energy will you have staying at the 4rth floor of the

engineering building?

Note; use your own weight (38 kg), assume that every floor has 8ft distance and 1N = 5.23kg.

Answers must be in terms of “Joules.”

Determine the precision of these two approximate values

a) 32000.Tons

b) 1.20×10(--5)ms

How many S.D are indicated by each of these approximate values?

a) 32000.tons

b) 1.20×10(--5)ms