What formation does a shield volcano have?

What will be an ideal response?


Built from flowing lava which spreads

Physics & Space Science

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At the instant a 2.0-kg particle has a velocity of 4.0 m/s in the positive x direction, a 3.0-kg particle has a velocity of 5.0 m/s in the positive y direction. What is the speed of the center of mass of the two-particle system?

A. 3.8 m/s B. 3.4 m/s C. 5.0 m/s D. 4.4 m/s E. 4.6 m/s

Physics & Space Science

A 2.0-C charge moves with a velocity of () m/s and experiences a magnetic force of () N. The x component of the magnetic field is equal to zero. Determine the y component of the magnetic field.

A. ?3.0 T B. +3.0 T C. +5.0 T D. ?5.0 T E. +6.0 T

Physics & Space Science

High mass stars are typically found on the ________ of the main sequence

A) upper right B) lower left C) upper left D) lower right E) center

Physics & Space Science

Frank says that quantum mechanics does not apply to baseballs because they do not jump from quantum state to quantum state when being thrown. Francine agrees with him. She says that there is no uncertainty in a baseball's position or momentum. Are they correct, or not, and why?

a. They are correct because the first excited state of a baseball is at a higher energy that any baseball ever receives. Therefore we cannot determine whether or not there is uncertainty in its position or momentum. b. They are correct because the first excited state of a baseball is at a higher energy that any baseball ever receives. Therefore its position and momentum are completely uncertain until it is caught. c. They are wrong because the baseball goes through so many quantum states in being thrown that we cannot observe the transitions. The uncertainties in its position and momentum are too small to observe. d. They are wrong because the baseball goes through so many quantum states in being thrown that we cannot observe the transitions. Because of the number of transitions its position and momentum are completely uncertain until it is caught. e. Quantum mechanics states that they are correct as long as they do not make any observations, but wrong as soon as they begin to make observations.

Physics & Space Science