Two 1kg masses are heated up on a hot plate for the same amount of time. One is made of copper, the other of iron. The copper one rises from 20° C to 30°C, but the iron one only goes from 20°C to 25°C. Explain why this happens.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

Asynthetic fiber used in manufacturing carpet has tensile strength that is normally distributed with mean 75.5 psi and standard deviation 3.5 psi. how is the standard deviation of the sample mean changed when the sample size is increased from n equals 8 to n equals 47

What is part of a line has one endpoint and continues in one direction?