Which of the following is not a presumed cause of ice ages?
A) The arrangement of continents around the globe.
B) The amount of sunlight being reflected back into space.
C) The geometry of Earth's rotation on its axis and revolution around the Sun.
D) Volcanic eruptions blocking the sunlight with clouds.
Answer: D
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As an artillery shell travels from the gun to the target, the projectile's vertical speed changes, but its horizontal speed stays constant
a. True b. False Indicate whether the statement is true or false
A rubber ball and a lump of putty have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The putty sticks to the wall
Which objects experiences the greater momentum change? A) the ball B) the putty C) Both experience the same non-zero momentum change. D) Both experience zero momentum change. E) Cannot be determined from the information given.
Earthquake waves are classified as P waves and S waves. Which of the following statements is true about these waves?
a. The P wave is transverse as is the S wave. b. The P wave is longitudinal as is the S wave. c. The P wave is transverse and the S wave is longitudinal. d. The P wave is longitudinal and the S wave is transverse. e. Both the P and S waves are mixtures of longitudinal and transverse waves.
You want to store 1,000 J of energy in an ideal spring when it is compressed by only 2.5 cm. What should be the force constant (spring constant) of this spring?
What will be an ideal response?