Num dado instante, uma espira circular de diâmetro 20 cm está sob a influência de um campo magnético uniforme de módulo 0,15 T, como mostra a figura. O valor do ângulo entre o plano da espira e a direção do campo magnético para o qual o fluxo do campo magnético é nulo, é de

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Suppose an objects initial velocity is 10m/s and it’s final velocity is 4 m/s. mass is constant. what can best be concluded about the object based in the work-energy theorem