Which of of the following is a physical change ice melting into a puddle of water, Leaves changing color in fall, Or baking a cake

A 13 g rubber stopper is swung in a horizontal circle with a radius of 0.85 m with a period of 0.65 s.

A tank containing liquid butane and one containing liquid propaneare sitting adjacent to one another. Each tank is equipped with a regulator with a pressure gauge. Classify these statements as true or false.

A car is traveling in a straight path due east with a velocity of 8 meters per second. In a 10 second interval, how many meters will the car travel? A).80 m B) 2 m C) 18 m D) 80 m

Supercells are updrafts that may cause which of the following? A hurricanes b blizzards c thunderstorms d tornadoes i think its Thunderstorms or tornadoes

At a given instant in time, a 18-kg rock is observed to be falling with an acceleration of 7.75 m/s2. What is the magnitude and direction of the gravitational force on the rock?

Suppose the initial kinetic energy and final potential energy in an experiment are both zero. What can you conclude?

Which of of the following is a physical change ice melting into a puddle of water, Leaves changing color in fall, Or baking a cake

An oxidation reaction requires which of the following for most common fires?

Change in sound vibration into electromagnetic waves is

Which componet of a loudspeaker produces soundwaves?