Find the difference of the initial and the final masses for the 4n -3 n + n. the atomic mass of 4n is 14.003074 u, the atomic mass of 13n is 13.005739 u

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

Which of the following are guidelines to follow for obtaining accurate observations

(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?