Ared light bulb is rated for 10 w and emits light of wavelengt 50 nm. how many photons per second does this light bulb emit? the eye carn e a light source if more than 100 photons from the source per second enter e eye pupil of diameter 0.25 cm. how far from the light bulb can the light bul e "seen" by the human eye assuming the light bulb is a point source of light nd that it is the only light that can be seen (in other words, in deep space)?

Which notation is used to represent an alpha particle? a. b. c. d.

This is really important 1.which of the following prefixes represents the largest value? (2 points)gigahectorkilomilli2.which of the following types of graphs is best for plotting the mean, median, and mode of data? (2 points)bar graphbox-and-whiskercircle graphstem-and-leaf

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 2 options: the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the cold balloon expands and rises. the warm balloon shrinks and sinks. the warm balloon expands and rises. the cold balloon shrinks and sinks.