Tính mô men quán tính của một đĩa đặc đồng chất, khối lượng 2kg, bán kính 25cm quanh trục quay là một cái đinh trên vành
đĩa như trong hình bên dưới

Andra has a family history of osteoporosis. her doctor advises her to eat foods rich in calcium. which foods should she add to her diet? a. fruits, especially grapes and berries b. unsaturated fats like olive and soybean oil c. beet greens, broccoli, and cheese

Which of the following supports the argument that viruses are nonliving? a) they are not cellular. b) their dna does not encode proteins. c) they have rna rather than dna. d) they do not evolve.

Control center is it involved in homeostasis