Um aluno pretende construir um aquecedor usando um enrolamento de fio. Experimenta e verifica que não proporciona o aquecimento suficiente. Indica, justificando, se para o conseguir, ligado à mesma tensão, deverá
aumentar ou diminuir o comprimento do fio usado.

Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

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

Which situation will produce the greatest change of momentum