Joe is holding a book over his head. Is he preforming work? why?

Jack is planning an experiment to see how temperature can affect the reproduction rate of a certain species of bacteria. Jack is listing some of the variables that could affect the outcome of the experiment.

When reading a buret, where is the initial and final volumes taken from? The top (where the zero is) or the bottom?. If the buret is completely full, is my initial volume 0?

As the wavelength of A wave in a uniform medium increases, its speed will what?

In which of the following scenarios is chemical energy being transformed into thermal energy? a A lion's temperature increases as it uses the energy it gets from its prey b A fish is able to swim using the energy it gets from eating plants c A

A ball is thrown straight upward. How does the sign of the work done by gravity while the ball is traveling upward compare with the sign of the work done by gravity while the ball is traveling downward? A.

A ball of mass 5.0kg is lifted off the floor a distance of 1.7m. 1. What is the change in the gravitational potential energy of the ball? 2. Now you release the ball from rest, and it falls to the floor.

What is the device to break a circuit called?

A 3 column table with 5 rows labeled table A. The first column is labeled voltage in volts with entries 1.0, 5.0, 10, 20, 50. The second column is labeled current: calculated in amps with no entries.

When you stack three flashlight batteries in the same direction, you get a voltage of 3*1.5 volts = 4.5 volts. What voltage do you get if one of the batteries is turned to face in the opposite direction? a) 0 volts b) 1.5 volts c) 3 volts d) - 4.

If an ant were scaled up to the size of an elephant, the ant would be