Suppose you have a 8.2 cm diameter fire hose with a 3.2 cm diameter nozzle. calculate the pressure drop due to the bernoulli effect as water enters the nozzle from the hose at the rate of 40.0 l/s. take 1.00 × 10^3 kg/m^3 for the density of the water.

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

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.

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?