Một bể chứa dầu dưới áp suất 5at. Khi tháo ra ngoài 40 lit dầu, áp suất trong bể giảm xuống chỉ còn 1at. Xác định dung tích bể chứa cho biết hệ số co thể tích của dầu w=7,55.10-10 m2/N

Unpolarized light whose intensity is 1.19 w/ is incident on a polarizer. (a) what is the intensity of the light leaving the polarizer? (b) if the analyzer is set at an angle of = 41.0∘ with respect to the polarizer, what is the intensity of the light that reaches the photocell?

Which of the following is the largest disadvantage of about half of the electricity in the united states comes from burning

Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.