Kỷ lục đẩy tạ cở Hà nội là 12,07m. Nếu tổ chức đẩy tạ ở Xanh Petecbua trong đièu kiện tương tự ( cùng vận tốc ban đầu và góc nghiêng) thì kỉ lục đẩy tạ sẽ là?
Cho gia tốc trọng trường ở Hà nội là g m s 1 = 9,727 / 2 , ở Xanh Petecbua là g m s 2 = 9,810 /

The de broglie relation λ=h/p can be rewritten in terms of the wave number k as p=kℏ. recall that wave number is defined by k=2π/λ. using the fact that λ=v/f, find the wave numbers k1 and k2 corresponding to frequencies f1 and f2. express your answer as two expressions

What is the most useful equation for electric power?

While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit