Mr. Bari drops a 3 kg ball from 1 feet above the glass. Find the velocity of the ballwhen it hits the glass. Use appropriate significant figures.

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

1) estimating temperature to the nearest tenth of a degree

2) estimating the mass of the sample to the nearest tenth of a gram

4) the position of the cups of sand and water under the heat lamp