According to newton's law of cooling, if a body with temperature upper t 1 is placed in surroundings with temperature upper t 0, different from that of upper t 1, the body will either cool or warm to temperature t(t) after t minutes, where t(t)equalsupper t 0plus(upper t 1minusupper t 0)e superscript negative kt. a cup of coffee with temperature 140degreesf is placed in a freezer with temperature 0degreesf. after 15 minutes, the temperature of the coffee is 41degreesf. use newton's law of cooling to find the coffee's temperature after 20 minutes.

Several mountains together form a mountain . a few of these combined form a mountain system. several systems combined form a mountain , which can stretch thousands of miles in length.

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

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.