Hurricanes are especially destructive because of the abrupt decrease in air pressure that they bring with the winds. consider a house which is airtight, and has a pressure of 1.02 atm when a hurricane hits. outside, external air pressure quickly falls to 0.91. what net force (directed outwards) is exerted on a 1.63 m by 1.63 m window on the house? (answer should be in si units, rounded off to nearest whole number).

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

Antireflective coatings on solar cells are often made by applying a thin film of silicon nitride (sinx), which has an index of refractive of 1.2, on the top of the silicon solar cell, which has a refractive index of about 3.5. however, the sun emits radiation of various wavelengths which the solar cell absorbs, and the antireflective coating can only absolutely minimize the reflection of one of these wavelengths. the coating thickness is chosen to reduce the reflection of green/yellow light (e = 2.2 ev), which is the most intense color in the solar spectrum (shown below). which of the following coatings would minimize reflection of green/yellow light? the answer is 820 nm how? what is the angular width of the central maximum of an electron traveling at 2 x 108 m/s going through a single slit of width 1 mm.

Find the mass by adding the numbers from the three sliders