Agolf ball is launched with 15 m/s at 30. draw the forces acting on the ball and construct the net force in order to determine the direction of the acceleration while the ball is in the air in the case (a) all friction forces are negligible and there is no wind; and (n) ftriction forces are taken into account and there is wind with constant velocity

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Estimate of the number of stars in our galaxy

Calculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energycalculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energy