Rachel carson's book silent spring, documenting the poisonous effects of the pesticide ddt, health officials worldwide who were proponents of the chemical's use.
a. improvised
b. refuted
c. reposed
d. speculated

The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.