7. the grid in a triode is kept negatively charged to prevent a. electrons from escaping from the tube containing the triode. b. electrons being repelled back to the cathode. c. the electrons from being attracted to the grid instead of the anode. d. the variations in voltage from getting too large.

Select each correct answer. more than one answer may be correct. which of the following is a characteristic of unicellular organisms? they can possess tissues and organs. all of their functions are performed by a single cell. they are usually microscopic. each of their cells is specialized to perform a specific function.

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n