OUR SOLAR SYSTEM Our Solar System
The size of a planet can be found from measurements of its angular size and its distance. How large the planet appears to be is its
angular size or angular diameter, the angle between two lines of sight along each side of the object. Yet, how large a planet appears
to us depends on it's

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

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

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?