A group of students are asked to design and build a device which will keep ice from melting. How could they best prevent heat from transferring to the ice by convection? A) Paint it black to absorb heat.

B) Paint it white to reflect radiation

C) Fill in all cracks to prevent hot air from entering

D) Use an insulator to prevent heat from entering

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

The magnitude of the magnetic field at a certain distance from a long, straight conductor is represented by b. what is the magnitude of the magnetic field at twice the distance from the conductor? a. at twice the distance, the magnitude of the field is 4b.b. at twice the distance, the magnitude of the field is 2b.c. at twice the distance, the magnitude of the field is b/2.d. at twice the distance, the magnitude of the field is b/4.e. at twice the distance, the magnitude of the field remains equal to b.