6. The drawing shows a boy with a bow and arrow. He is holding the arrow and
pulling it back.
string
bow
arrow
(a) Two horizontal forces act on the arrow. These are the force exerted by the
boy's hand and the force exerted by the string. The arrow is not moving.
The boy pulls the arrow with a force of 150 N. What is the size of the force
exerted by the string on the arrow?
N​

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.

An electron moves with a constant horizontal velocity of 3.0 × 106 m/s and no initial vertical velocity as it enters a deflector inside a tv tube. the electron strikes the screen after traveling 26 cm horizontally and 19 cm vertically upward with no horizontal acceleration. what is the constant vertical acceleration provided by the deflector? (the effects of gravity can be ignored.)

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.