Huifen weighs herself on her bathroom scales. She says "My weight is 54 kg!"In Science, what Huifen said would be considered wrong. Explain why.

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?