What might a shadow look like from a pole placed 400 km north of Syene at noon on June 21?

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments