What is the definition of luminosity

Drake travel 1000m south and then 1200m west

A ring of charge with uniform charge density is completely enclosed in a hollow donut shape. An exact copy of the ring is completely enclosed in a hollow sphere. A) What is the ratio of the flux out of the donut shape to that out of the sphere?

1. Should water be classified as renewable or nonrenewable? Explain your reasoning. 2. Describe the life cycle of a low mass star similar to our sun. 3. Identify the advantages and disadvantages of using coal for energy.

Which is a characteristics of a physical change? A. the chemical bonds i the substance are uncharged B. the change cannot be seen C. the molecules all move at the same speed D. the substance has reacted with another substance

A girl of mass 40 kg wearing high heel of radius 3mm. find the pressure exerted by her on the ground. [answer the question fast]

Calculate the speed for a car that went a distance of 125 miles in 2 hours time

A small 25 kilogram canoe is floating downriver at a speed of 4 m/s. What is the canoe's kinetic energy?

A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a tangential acceleration of 1.85 m/s2. The car makes it one quarter of the way around the circle before it skids off the track.

A train travels 120 km in 2 hours and 30 minutes what is the average speed

How many constellations are there?