Life emerged on Earth within about a billion years after the solar system formed

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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Draw a schematic (not to scale) of the Milky Way Galaxy face on so that you see the spiral arms. Label the spiral arms. Now draw a schematic (not to scale) of the Milky Way Galaxy edge-on, and locate and label the disk

What will be an ideal response?

Physics & Space Science

Carnot Engine: One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 109 cal of fuel produces 1.4 × 1010 J of work in one hour. (1 cal = 4.186 J)(a) What is the actual efficiency of this engine?(b) What is the power output of this engine?(c) What would be the maximum possible efficiency for an engine using the same temperature extremes?

What will be an ideal response?

Physics & Space Science

An object of mass 4.0 kg starts at rest from the top of a rough inclined plane of height 10 m as shown in the figure

If the speed of the object at the bottom of the inclined plane is 10 m/s, how much work does friction do on this object as it slides down the incline? What will be an ideal response?

Physics & Space Science

A spaceship is observed from the Earth to be moving toward a star at a speed of 0.80 c. If the distance from the spaceship to the star is 1.6 ly as measured from earth, how much time passes on the space ship while traveling to the star?

A. 2.0 y B. 2.1 y C. 1.9 y D. 1.2 y E. 0.96 y

Physics & Space Science