Assume that air consists of the diatomic gases o2 and n2. how much must we increase the thermal energy of 1.0 kg of air in order to increase its temperature by 1.0°c?

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

May someone explain how to do this question?

(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?