An AC generator has a maximum output emf of 4.20 x 102 V. What is the rms emf? (Remember ΔVrms = 0.707Vmax)

True or false scientific inquiry incorporates many scientific methods

What is siliceous ooze mostly composed of? a. minerals that crystallize quickly from ocean water through various chemical reactionsB) the shells of diatoms (single-celled algae) and radiolarians (single-celled animals) c.

What happens when heat is removed from a liquid and it cools? A. The energy content decreases, and the speed of its particles increases. B. The energy content decreases, and the speed of its particles decreases. C.

In whick changes of state do atoms lose energy? Check all that apply

If Sally is standing on a 200m tall cliff and throws a ball at 40m/s at a 30° angle to the horizontal: a. What is the ball's initial velocity in the y direction? b. What is the ball's velocity in the x direction? c.

You short-circuit a 9 volt battery by connecting a short wire from one end of the battery to the other end. if the current in the short circuit is measured to be 18 amperes, what is the internal resistance of the battery?

A student is trying to calculate the density of a ball. She already knows the mass, but she needs to determine the volume as well. Which of the following formulas can be used to calculate the volume of the ball?

Is there such a thing as real time weather radar? why not?

Luke and Carrie are driving down a straight section of the interstate at 70 mph in Luke's new convertible. Carrie is drinking a soda in the passenger seat.

A force produces power p by doing work w in a time t. what power will be produced by a force that does six times as much work in half as much time?