Displacement: If, in the figure, you start from the Bakery, travel to the Cafe, and then to the Art Gallery(a) what distance you have traveled?(b) what is your displacement?
What will be an ideal response?
(a) 10.5 km (b) 2.50 km south
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Which of the following is true about low-mass stars compared to high-mass stars?
A) Low-mass stars are cooler and less luminous than high-mass stars. B) Low-mass stars are hotter and more luminous than high-mass stars. C) Low-mass stars are cooler but more luminous than high-mass stars. D) Low-mass stars are hotter but less luminous than high-mass stars. E) Low-mass stars have the same temperature and luminosity as high-mass stars.
The resultant force R (in newtons) for the force system shown in the figure is:
(A) 29.5i 1 36.4j – 81.4k
(B) 229.5i – 36.4j 1 78.3k
(C) 236.4i 1 29.5j 1 81.4k
(D) 239.3i 1 36.4j 1 122.2k
The half-life of carbon 14 is 5730 years. If a 1-gram sample of old carbon is 1/8 as radioactive as 1-gram of a current sample, then the age of the old sample is about
A) 716 years. B) 11,500 years. C) 17,200 years. D) 22,900 years. E) 46,000 years.
The location of a star in the H-R diagram indicates its temperature and intrinsic brightness
a. True b. False Indicate whether the statement is true or false