8. Grass uses energy from the Sun
to grow. A cow eats grass so it
has energy to walk. You drink
milk from the cow so you have
energy to hit a ball. This makes
a loud sound and sends the ball
flying. In these steps, energy
keeps moving and changing.
What is this series of steps called?
® energy movement
® energy switching
© energy transfer
O energy conversion

Amodel rocket with a mass of 0.212 kg is launched into the air with an initial speed of 84 m/s. how much kinetic energy will the rocket have at a height of 214 m? assume there is no wind resistance. 634 j 303 j

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?