You connected the 5 Ω, 10 Ω, 15 Ω resistors in series with a 90 V battery. What is the current?​

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

What is the speed of an object at a given moment?

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value