What is a controlled experiment? none of the variables are changed all variables are kept constant two variables are changed at a time one variable is changed at a time

Which types of galaxies tend to be made up of very old stars and contain very little gas and dust matter?

Which has more inertia? A bowling ball or a whiffle ball? Why?

A gasoline engine transform approximately 34 percent of the fuel's chemical energy into mechanical energy. if energy is conserved what happenes to the other 66 percent?

True or false that humans emit light?

Which of the following is an inclined plane? - Stairs - Wheelchair ramp - Sloping driveway - Road going up a mountain

You are given miles = 50 miles, time = 1 hour initial given velocity = 0 miles/hour (your standing still) and final velocity = 50 miles/hour. you travel a total of 100 miles. How long did it take you (time) ?

The centripetal force acting on a satellite in orbit A. acts as an unbalanced force on the satellite. B. changes the direction of the satellite. C. is a center-directed force. D. all of the above

Compare your answer to the previous question with your observations in conducting this experiment. Discuss whether energy was conserved in your experiment. Was friction negligible

What is a controlled experiment? none of the variables are changed all variables are kept constant two variables are changed at a time one variable is changed at a time

At what phase would you expect to find extremely high and low tides?