Nước ở25o C được chứa trong thùng chứa hình trụcó đường kính 100 mm, cao 50
cm. Hãy xác định chiều cao của mực nước và chiều cao của bềmặt thoáng khi biết
lượngnước chứa trong bình là 2 kg.

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

It is necessary to determine the specific heat of an unknown object. the mass of the object is 201.0g it is determined experimentally that it takes 15j to raise the temperature 10°c. what is the specific heat of the object? 3,020,000 j/kg ∙ k 1500 j/kg ∙ k 0.00130 j/kg ∙ k 7.46 j/kg ∙ k

The sr-71 blackbird jet has a mass of 30600 kg and a top speed of 981 m/s. what is it’s maximum kinetic energy