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A rogue planet approaches a star from far away. As it approaches the star surface, which of the following is true?

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Ignoring the retarding effects of friction, in which of the following cases is the total mechanical energy conserved.

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A car is initially stationary at point , and then moves towards point . Which of the following is true?

Car at point X on top of a hill of height h, with point Y at the bottom of the hill. A further height of H to base.

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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?

i. block with arrow reaching height h, ii. block being draged up incline to height h

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Using a rope of negligible mass, you pull a box along a horizontal surface with a constant horizontal force ​. The box moves at a constant velocity from position to position . The force of friction  cannot be neglected. Which one of the following statements concerning the motion of the box from to is true?Left: block at point A, with back arrow Fk and forward arrow FA. Right: block at point B, with back arrow Fk and forward FA
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A 7 kg bowling ball is rolled into a stationary 1 kg pin as shown in the diagram below.

A bowling ball labelled m=7kg, arrow shows forward direction to bowling pin, labelled m=1kg

After the collision: 

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A person driving a car has an accident. The airbag is activated to cushion the person's head. Which of the following is correct?

Person in a car seat, airbag extends from steering wheel into the person's face and chest

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Name the structure in the picture labeled number 4.

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Name the epithelium labeled in the picture bellow as number 1.

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Name the structure in the picture labeled number 3.

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