Design and execute an experiment that demonstrates that the acceleration of a connected system of masses (the cart and any connected mass) is directly proportional to the system’s total mass. you will need to use the data generated by the experiment to produce a plot of the object’s acceleration versus its fnet, a vs. fnet, as well as an equation that best represents the data. the instructor may test your analysis by asking you to predict the acceleration of the object for a given system of masses.

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.

Write down two additional questions about earth's magnetic field that will make your presentation more informative.