How does the energy compare when the skateboarder is on the bottom of the ramp versus when the skateboarder is in the air performing a trick?
Use the following information about a half-pipe and your knowledge of science to answer questions 22 and
23
The diagram shows a type of ramp called a halfpipe that skateboarders and snowboarders use to perform
high jumps and tricks in the air
ОА
The skateboarder has less gravitational energy on the bottom and more kinetic energy
in the air
Up in
the air
Half-Pipe / Vert Ramp
Profile View
Up in
the air
O
The skateboarder has more gravitational energy on the bottom and less in the air.
o
с
The skateboarder has more kinetic energy on the bottom and more gravitational energy
in the air
Flat bottom
Oo
The skateboarder has less kinetic energy on the bottom and more kinetic energy in the
air
(Image source: https://commons Wikimedia. org/wiki/File Hall Pipe_vert_Ramp sva)
021 Illuminate Education, Inc.

Nanotechnology, the field of trying to build ultrasmall structures one atom at a time, has progressed in recent years. one potential application of nanotechnology is the construction of artificial cells. the simplest cells would probably mimic red blood cells, the body's oxygen transporters. for example, nanocontainers, perhaps constructed of carbon, could be pumped full of oxygen and injected into a person's bloodstream. if the person needed additional oxygen-due to a heart attack perhaps, or for the purpose of space travel-these containers could slowly release oxygen into the blood, allowing tissues that would otherwise die to remain alive. suppose that the nanocontainers were cubic and had an edge length of 24 nanometers. part a part complete what is the volume of one nanocontainer? (ignore the thickness of the nanocontainer's wall.) express your answer using two significant figures. v v = 1.4ă—10â’20 l previous answers correct significant figures feedback: your answer 1.3824â‹…10â’20 = 1.382ă—10â’20 l was either rounded differently or used a different number of significant figures than required for this part. if you need this result for any later calculation in this item, keep all the digits and round as the final step before submitting your answer. part b suppose that each nanocontainer could contain pure oxygen pressurized to a density of 81 g/l . how many grams of oxygen could be contained by each nanocontainer?