If 500 thousand btus of energy are available to raise the temperature of a water boiler from 20â°f to 100â°f, how many gallons of water can be added to the boiler?

A3.9 g aluminum foil ball with a charge of +4.1×10−9 c is suspended on a string in a uniform horizontal e⃗ field. the string deviates to the right and makes an angle of 30∘ with the vertical. part a part complete what information about the e⃗ field can you determine for this situation? what information about the field can you determine for this situation? only the magnitude of e⃗ only the direction of e⃗ both the magnitude and the direction of e⃗ none of the above previous answers correct part b determine the magnitude of the electric field. express your answer with the appropriate units. e e = nothing nothing request answer part c determine the direction of the electric field. determine the direction of the electric field. to the right to the left away from you toward you

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Heterogeneous mixture with larger particles that never settle is