Which of the following statements is supported by the picture shown above?

A. The Earth has a magnetic field that can be detected with a compass.

B. The Earth is orbited by one moon.

C. Three-fourths of the Earth's surface is covered by a thin layer of water.

D.
The Earth is made mostly of rock.

Aphysical change is a change in the size, shape,, or stafe of matter true or false

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.