Suppose you wanted to break a meter stick over your knee. the cross section of a meter stick is rectangular. will it be easier to break with a.) the long side against your knee b.) the short side against your knee?

Select the word from the list that best fits the definition classification of most stars on the h-r diagram

Could someone . i have tried to solve myself but my calculation is off

(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?