Answer the following statement(s) true (T) or false (F)
1. The x, y, and z directions of a reference frame point up, west, and north, respectively. Such a coordinate system is right-handed.
2. The x and y axes of a reference frame point forward and to your right, respectively. The frame is right-handed if the z axis points up.
3. We can describe a vector’s magnitude and direction without a reference frame
4. The components of a displacement vector 
between two position vectors 
and 
depend on one’s choice of reference frame origin.
5. 
for all vectors 
and 
1. TRUE
2. FALSE
3. TRUE
4. FALSE
5. TRUE
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Which of the following statements comparing the jovian interiors is not thought to be true?
A) They all have cores of roughly the same mass. B) They all have cores that contain at least some rock and metal. C) They all have the same exact set of internal layers, though these layers differ in size. D) Deep inside them, they all have pressures far higher than that found on the bottom of the ocean on Earth.
On what basis did Herschel think he had found a comet?
A) The object appeared as a small greenish disk in his telescope. B) It appeared to be moving slightly night by night. C) No star appeared in that position on his charts. D) It was not a point of light, like a star should appear. E) All of the above are correct.
A person looks horizontally at the edge of a swimming pool. If its length is 5 m, and the pool is filled to the surface, to what depth (in m) could the observer see? (n for water is 1.33)
a. 3.2 b. 4.4 c. 2.1 d. 1.0 e. 0.3
Momentum: What is the momentum of a proton when it is moving with a speed of 0.60c? (mproton = 1.67 × 10-27 kg)
A. 1.2 × 10-19 kg? m/s B. 1.5 × 10-19 kg ? m/s C. 3.0 × 10-19 kg ? m/s D. 3.8 × 10-19 kg ? m/s