Một lượng khí oxy khối lượng 160g được nung nóng từ nhiệt độ 50ºC đến 60ºC. Tìm nhiệt lượng mà khi nhận được và độ biến thiên nội năng của khối khí trong hai quá trình: a. Đẳng tích
b. Đẳng áp

Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies.

You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?

This punnett square shows the cross between two pants. one parent has round seeds (rr). and the other parent has wrinkled seeds (rr) which best describes their offspring as shown in this cross?