O Sistema Internacional de Unidades é composto por sete grandezas básicas e as demais são grandezas derivadas.

Sobre as unidades de medidas no SI, analise as seguintes afirmativas:

I. A unidade de medida de intensidade luminosa é candela;

II. A unidade de medida do tempo é a hora;

III. A temperatura é dada em graus Celsius;

IV. A grandeza derivada “velocidade” é dada em metros por segundo;

V. Todas as grandezas citadas anteriormente são grandezas vetoriais.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

An ascending elevator, hanging from a cable, is coming to a stop. part a part complete identify all forces acting on the elevator from the list below. select all that apply. select all that apply. kinetic friction normal force tension weight static friction submitprevious answers correct part b draw a free-body diagram of the object. draw the vectors starting at the black dot. the location and orientation of the vectors will be graded. the exact length of your vectors will not be graded but the relative length of one to the other will be graded.

Which type of energy is transferred by convection currents?