Có 6,5g khí H2 ở 270C được đun nóng đẳng áp để thể tích tăng gấp đôi. Công do khí thực hiện:

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Rohit is trying to tune an instrument

Aclarinetist, setting out for a performance, grabs his 3.350 kg clarinet case (including the clarinet) from the top of the piano and carries it through the air with an upward force of 24.65 n. find the case's vertical acceleration. indicate an upward acceleration as positive and a downward one as negative.