A rogue planet approaches a star from far away. As it approaches the star surface, which of the following is true?
Ignoring the retarding effects of friction, in which of the following cases is the total mechanical energy conserved.
You want to lift a heavy block through a height by attaching a string of negligible mass to it and pulling so that it moves at a constant velocity. You have the choice of lifting it either by pulling the string vertically upward or along a frictionless inclined plane (see the image below). Which one of the following statements is true?
A 7 kg bowling ball is rolled into a stationary 1 kg pin as shown in the diagram below.
After the collision:
A person driving a car has an accident. The airbag is activated to cushion the person's head. Which of the following is correct?
Name the structure in the picture labeled number 4.
Name the epithelium labeled in the picture bellow as number 1.
Name the structure in the picture labeled number 3.