Density = mass / volume i. Mass as subject
ii. Volume as subject
iii. State the relationship between density and mass
iv. State the relationship between density and volume

Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain

Aresistor with an unknown resistance is connected in parallel to a 9 ω resistor. when both resistors are connected in parallel to an emf source of 21 v, the current through the unknown resistor is measured with an ammeter to be 4 a. what is the resistance of the unknown resistor? answer in units of ω.

The velocity of sound wave in air at 35°c is 353m/s, calculate the velocity of sound at 46°c