Astar with an original mass of 8 to 25 solar masses will ultimately become a ? a) red giant b)white dwarf c) neutron star d)main sequence star

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

What are two different ways you could find the value of a? explain these methods.

More solar radiation is absorbed by earth’s surface than by