The atmosphere has many roles, including:

provides gases for respiration and photosynthesis

provides food for life

provides protection from UV radiation and meteorites

provides a surface to build and live on

stabilizes a habitable temperature

A star's transverse velocity depends on which two factors?

An arrow is shot from a height of 1.55 m toward a cliff of height H. It is shot with a velocity of 26 m/s at an angle of 60° above the horizontal. It lands on the top edge of the cliff 3.99 s later. (a) Draw a sketch of the given example.

Find the weight of a 100 N dog

The specific angular momentum of a spacecraft in circular Earth orbit is 48,000 km2 / s. Determine the period of the orbit.

We are usually not aware of the electric force acting between two everyday objects because

All parts of the electromagnetic spectrum share travel at the same speed through empty space. True False

What is the mechanical advantage of the frictionless plane shown below? Inclined plane A. 0.64 B. 1.31 C. 1.4 D. 1.56

What does ice become when it absorbs enough heat energy. C. Frost. D. Liquid

Steam enters an adiabatic turbine steadily at 3 mpa and 400°c and leaves at 50 kpa and 100°c. if the power output of the turbine is 2 mw, determine (a) the isentropic efficiency of the turbine and (b) the mass flow rate of the steam flowing through

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.