A rubber balloon has become negatively charged from being rubbed with a wool cloth, and the charge is measured as 1.00 * 10-14 C. According to this charge, the balloon contains an excess of how many electrons?

How many atoms are in 3.5 moles of sulfur

A race car makes three and half laps around a circular track in 4.5 min. What is the car's angular speed?

Tina has been dieting for a total of 13 weeks she lost 3 lb on the first week of her diet but gain the back of pound on the second week on each remaining week of her diet she lost 2 lb how many pounds has Tina lost in all a. 26 lb B. 22 lb C.

You have a small tank of water. Suppose you make waves in the tank, and measure their speed in different depths of water. Which is the independent variable, and which is the dependent variable?

Why do deer depend on plants to survive

In order to be considered scientific, evidence must be:

An unknown material has a mass of 5.61 kg, and its temperature increases by 0.124°C when 1320 J of heat are added. What is the specific heat of the material? (Unit = J / (kg*C))

What is the speed of a 1.0 * 103-kilogram car that has a momentum of 2.0 * 104 kilogram∙meters per second east?

4. How does an increase in orbital radius affect average orbital speed

What happens when a plastic lid sprinkled with iron filings is placed over a magnet?