Evaluate the following without the use of a calculator a) 2 sin 150 cos 15 °
b) cos? 15° - sin 15
c) cos? 15° +sin? 15°​

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.