What do astronomers call a system that is composed of more than two stars

A projectile is shot from the edge of a cliff 160 m above ground with an initial speed of 55.0 m/s at an angle of 40° below the horizontal. How much time does it take the projectile to hit the ground?

Why can some electric appliances be immersed in water without damage? A. The thermostat and the timer are in a sealed compartment below the pan B. The heating element is sealed and the control is in the detachable probe C.

What is the year in which j. J. Thomson discovered the electron?

Find the volume of 20g of benzene - density is. 88 g/cm3

2. When an object moves in a circular path, it accelerates toward the center of the circle as a result of a. terminal velocity c. centripetal force b. momentum d. friction

Whitch tool could be used to mesure the mass of. a package being mailed

Most of an atom is empty space. a. True b. False

Two ice skaters, Skater X and Skater Y, are at rest on a horizontal surface made of ice. The friction between the ice and the skaters is negligible.

Hiker goes distance of 4km east start time 9:00am end time 9:45am. what was hike rs velocity

A hot saucepan is placed on a cold bench. Heat will flow from the saucepan to the bench until ... A. the bench is as hot as the saucepan was. B. the saucepan and bench are at the same temperature. C. the saucepan has lost all of its heat. D.