While the car is moving forward, a gust of wind gives it a big push from the back. Because most of the friction on a car (at highway speeds) is from the air, the friction force is reduced from 2,000 N to 1,500 N. What is the net force on the car if the engine force remains at 2,000 N? Does it still move at constant velocity? ANYBODY KNOW THE ANSWER

What type of nuclear decay causes the atomic number of an element to increase by 1?

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

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.