Suppose that a large, very dense asteroid with mass one hundredth (1/100) of that of the earth collides with our planet. assume that the asteroid hits the equator with a speed of 1000 km/s, that it comes in on a purely radial path, and that it stays near the surface of the earth after the collision. how long is an earth-day after the collision? (you can assume that earth has mass m = 6 × 1024 kg and radius r = 6400 km and has the shape of a perfect sphere).

The consumption of fossil fuels could be

What is the momentum of a 2 kg object moving at 15 meters per second

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?