Calculate the amount of energy transferred when a 40w light bulb is left on for 30 minutes.

What is the working principle of lever

An object has a kinetic energy of 275 j and a momentum of magnitude 25.0 kg · m/s. find the (a) speed and (b) mass of the object.

A load of 500 N is placed 8 N from the pivot what is the turning moment of the load

Which of these is a source for particulate matter in the air? a. automobiles b. dust c. fires d. all of the above

How does the earth's tilt in the summer contrast with its tilt in the winter?

Sarah added sugar to her iced tea, but it is not dissolving very quickly. Which can Sarah do to make the sugar dissolve faster? Add more sugar. Heat the tea. Add more ice.

Positively-charged particles consisting of two protons and two neutrons emitted by radioactive materials. True or False

A package of aluminum foil is 59.3 yd long, 13 in. wide, and 0.00040 in. thick. If aluminum has a density of 2.70 g/cm3, what is the mass, in grams, of the foil?

A teacher pushed a 10-kg desk across a floor for a distance of 5 m she exerted a horizontal force of 20 N how much work is done

Carbon and oxygen, both nonmetals, bond to form a compound. What is the name of the carbon compound with one carbon and two oxygens? A) carbon oxide B) carbon dioxide C) carbon dioxygen D) monocarbon dioxide