A0.80 kg block of aluminum is heated at atmospheric pressure so that its temperature increases from 22.0°c to 40.0°c. (a) find the work done on the aluminum mj (b) find the energy added to it by heat. kj (c) find the change in its internal energy kj

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Selma made a diagram to compare convection and radiation. which label belongs in the area marked x? must involve temperature differences between substances or objects only occurs when molecules are in direct contact involves the movement of fluids based on density differences can occur where there is little or no matter

Aboat radioed a distress call to a coast guard station. at the time of the call, a vector a from the station to the boat had a magnitude of 45.0 km and was directed 15.0° east of north. a vector from the station to the point where the boat was later found is = 30.0 km, 15.0° north of east. what are the components of the vector from the point where the distress call was made to point where the boat was found? in other words, what are the components of vector c = b - a?