The intensity rouching the surface of the earth from the sun is about 1.36kw m 2 aasuming be a sphere (of radius 6.96 x 10m) that radiates like a blackbody, estimate (a) the temperature at its surface and the wavelength of its strongest radiation (b) the total power radiated by the sun (the earth-sun distance is 1.5 x 10 m)

1. a camcorder has a power rating of 19 watts. if the output voltage from its battery is 7 volts, what current does it use?answer units 2. a 1.5m wire carries a 6 a current when a potential difference of 57 v is applied. what is the resistance of the wire? yourunits 3. a clothes dryer uses about 2 amps of current from a 240 volt line. how much power does it use? yourunits 4.

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?

Which type of reaction is shown in this energy diagram ?