An object weighs 7.84 N when it is in air and 6.86 N when it is immersed in water of density 1000 kg/m3. What is the density of the object?
A) 6000 kg/m3
B) 7000 kg/m3
C) 8000 kg/m3
D) 9000 kg/m3
C
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Describe qualitatively how the formation of deuterium and its current abundance is related to the critical density of the universe
What will be an ideal response?
Like latitude on Earth, ________ in the sky is measured in degrees north and south of the equator
Fill in the blank(s) with correct word
A ball is thrown across the street. During its flight, the ball's speed is lowest at
A. the beginning of its flight. B. The speed is constant throughout the flight C. the highest point of its flight. D. the end of its flight.
The graph below plots the escape velocity of each planet along the vertical axis and its surface temperature along the horizontal. The lines plotted in the figure are the average speeds of gas particles as a function of temperature for various gases. Which of the planets or satellite plotted in this diagram is least able to hold an atmosphere?