Earth receives light and heat energy from the sun. Every now and then Ohio has a
blue, sunny day. When the sun is shining, Ms. Welch can feel the heat of the sun on
her face.
How does light and heat energy from the sun reach Earth?
By mechanical waves that transfer heat and light energy
By radio waves that transfer heat and light energy
By electromagnetic waves that transfer heat and light energy
By sound waves that transfer heat and light energy
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(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?

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

The substances that are necessary for producing of certain hormones and that store and transport vitamins