Products must equal which in a chemical reaction?

Reactants

atoms

elements

molecules

Which of the following best describes "the ability to do work"? a. force b. mass c. energy d. volume

What was different about the fire Montag saw after leaving the river? A. It was giving warmth and comfort, not destroying things. B. It was only giving off low flames. C. Those started by the firemen usually leaped hundreds of feet into the air. D.

A car changes velocity at a constant acceleration of 2.5m/s to reach 43.7m/s in 2.7 s how fast was the car moving when it began to accelerate?

17. The radiometric dating of an igneous rock provides the date the rock was eroded the relative age of the rock the date of Earth's formation the date of the rock's formation

What is loudness? a) the frequency of a sound wave b) the rate at which a wave's energy flows through a given area c) the amplitude of a sound wave d) the physical response to the intensity of sound, modified by physical factors

Which of the following would change a boat's center of gravity? A. Change the material it is made from B. Put a small cabin directly over the current center of gravity C.

A boat leaves a dock at 7:00 pm and travels due south at a speed of 20 km/h. another boat has been heading due east at 15 km/h and reaches the same dock at 8:00 pm.

Two students are playing hockey with 0.4-N wad of paper. One student hits the wad and it slides across his desk, slowing down at a rate of 0.6 m/s/s. Find the coefficient of kinetic friction between the wad and the desk?

A uniform solid sphere rolls down an incline. (a) What must be the incline angle if the linear acceleration of the center of the sphere is to have a magnitude of 0.

Which one of these are non-contact forces friction gravity normal force pushing force