A toy car starts accelerating down a ramp at a rate of 1.5 m/s, if the car's final speed is 25 m/s, how long did the toy car travel?

When a light bulb shines, it gives off light energy and energy. a. heat b. potential c. chemical d. electrical

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes with the propane (c3h8) to burn it completely. for every gram of propane that flows through the burner, what volume of air is needed to burn it completely? assume that the temperature of the burner is 195.0°c, the pressure is 1.05 atm, and the mole fraction of o2 in air is 0.210.