the graph shows the temperature depends of resistance for two materials. how do the materials compare

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Figure 9 on page 362 shows various motions of balls. the curved path followed by the yellow ball in b in picture b is result of a) inertia b) centripetal motion c) gravity and horizontal velocity d) linear motion

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this