Estimate how many times farther away the Hercules cluster is than the Virgo Cluster. Show how you made your estimate. Be sure and measure at least five galaxies in each cluster. Avoid odd-looking galaxies. Virgo 1: ; Hercules 1:
Virgo 2: ; Hercules 2:
Virgo 3: ; Hercules 3:
Virgo 4: ; Hercules 4:
Virgo 5: ; Hercules 5:
Virgo average: ; Hercules average:

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

There are two-speed cameras, one in an are where the speed limit is 30 km/h and another where the speed limit is 50 km/h. in which will there be a smaller time interval between the photographs? explain your answer.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates