A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

Tamika inflates and ties off a balloon in her classroom and then takes it outside on a cold, winter day. Immediately, she notices that the balloon has gotten a little bit smaller. Why does this occur?

A transfer of charge is actually a gross movement of

Julio hit a baseball. What caused the ball to change direction at the time of impact? a. the force of gravity b. the speed of the ball c. the force of his swing d. the weight of the air

Through which does light travel best? a. matter b. empty space c. equally well through matter and empty space

If a 60.1 kg person jumps onto a seesaw at an angle of 22 degrees at a distance of 6.9 m from the fulcrum. How much force will their friend feel if they are sitting 6.6 m on the opposite side of the seesaw?

you can produce a sound by plucking a string or by blowing in a pipe. how are these two ways different?

There are four springs stretched by the same mass. Spring A: 25 cm Spring B: 10 cm Spring C: 100 cm Spring D: 1 cm Which spring is the strongest? A B C D

Consider a rough asphalt roadway with 17 cm curbs and one 3.75 m lane in each direction and a 1.45 m shoulder on each side. The road has a longitudinal slope of 0.75% and is crowned in the center with a transverse slope of 2.25%.

An example of an opinion would be which of the following? bob s burgers is the best show on television. cake is appropriate for many occasions. earth is 238,900 miles from the moon. none of these

Which is a concern about mining for uranium? -Heated water could be released into the environment. -Dust released in the air could be radioactive. -Supplies could become low during a drought.