(4%) problem 17: the core of the sun has a temperature of 1.5 × 107 k, while the surface of the sun has a temperature of 4670 k (which varies over the surface, with the sunspots being cooler). treat the core of the sun and the surface of the sun as two large reservoirs connected by the solar interior. nuclear fusion processes in the core produce 3.8 × 1026 j every second. assume that 100% of this energy is transferred from the core to the surface. dho32@student. mtsac. edu

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

Name two kinds of practical electric pumps.