8 When a person stands on tiptoe (a strenuous position). The total gravitational
force on the body, F is supported by the force n exerted by the floor on the toes
of one foot. I is the force exerted by the Achilles tendon on the foot and R is the
force exerted by the tibia on the foot. Find the values of T, R, and when F=
n=700 N.

3. on your graph, the data points between the black squares are data for elements with atomic numbers 3 through 9. locate these elements on your periodic table. what term or description would you use to identify these elements with respect to the periodic table?

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.

If element x has 99 protons how many electrons does it have