How many states in the world are there?

Which statement is true of a convex lens? A. It is thicker at the edges and thinner at the center. B. It is thinner at the edges and thicker at the center. C. It is uniformly thick. D. It is uniformly thin.

A flat (unbanked) curve on a highway that has a radius of 50 m. A car rounds the curve. The car has mass 4,907 kg. The static coefficient of friction between the curve and the car is 0.35. What is the maximum speed of the car to prevent sliding?

the water in the buffalo river flows at an average speed of 5 km/hr. if you and a friend decide to canoe down the river a distance of 16 kilometers, how many hours and minutes will it take? need the hr and the min

Which is an idea that Einstein introduced to his theories of relativity

I can't hear what a character on a television show said. Therefore what must I change on sound wave that exists the television

Hannah has information about an object in circular orbit around Earth. mEarth = 6.0 * 1024 kg G = 6.67 * 10-11 What additional information does Hannah need in order to calculate the tangential speed of the orbiting object?

All objects are attracted to each other by the force of

Samantha wants to study circus performance when she gets to college. She has mastered many physical skills already, but she keeps falling short on her jumps.

Is this Conduction, Convection, or Radiation: The top floor of a building is the warmest.

The law that states the volume of gas is directly proportional to its temperature in kelvins if the pressure and the number of particles is constant is * a. Boyle's Law b. Gay-Lussac's Law c. Einstein's law. d. Charles's law.