Helium fusion is sometimes referred to as the _______________ because three helium nuclei are needed to make a carbon nucleus, and because the helium nucleus is called an alpha particle
Fill in the blank(s) with correct word
triple alpha process
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Although Neptune has no liquid metallic hydrogen in its interior, it does have a magnetic field
a. True b. False Indicate whether the statement is true or false
If the height of an object above a reference level is quadrupled its gravitational potential energy is multiplied by
A. 16 B. 4 C. 1/4 D. 1/16
To "spear" a blue fish with a red laser beam and compensate for refraction, aim your laser
A) directly at the sighted fish. B) above the sighted fish. C) below the sighted fish.
A 1.6-kg ball is attached to the end of a 0.40-m string to form a pendulum. This pendulum is released from rest with the string horizontal. At the lowest point of its swing, when it is moving horizontally, the ball collides with a 0.80-kg block initially at rest on a horizontal frictionless surface. The speed of the block just after the collision is 3.0 m/s. What is the speed of the ball just
after the collision? a. 1.7 m/s b. 1.1 m/s c. 1.5 m/s d. 1.3 m/s e. 2.1 m/s