B) The resistivity of tungsten at the lamp's working temperature is 4 x 10-72m. The total length of the tungsten filament is 0.80 m. Estimate theradius of the filament.

Determine the critical height h of the water level that causes the concrete gravity dam to be on the verge of tipping over due to water pressure. the density of concrete is ρc = 2.40 mg/m3. suppose that hd = 38 m. hint: work the problem using a 1-m width of the dam.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

What component of earth’s atmosphere exists entirely as a result of photosynthesis?