Infer why gases such as the oxygen used at hospitals are compressed. why must compressed gases be shielded from high temperatures? what must happen to compressed oxygen before it can be inhaled?

You cannot get more work out of any machine than what you put into it. 1) True 2) False

A supersonic aircraft consumes 5320 imperial gallons of kerosene per hour of flight and flies an average of 14 hours per day. it takes roughly seven tons of crude oil to produce one ton of kerosene. the density of kerosene is 0 965 g/cm.

A certain aircraft has a mass of 300,000 kg. At a certain instant during its landing, its speed is 27.0 m/s. If the braking force is a constant 445,000 N, what is the speed of the airplane 10.0 s later?

A car is moving with an initial relocity of 20 mls. If the car has an acceleration of lombs the velocity after 5 seconds. , find

Two runners ran side by side each holding one end of a horizontal pole. What would most likely happen if one of the runners began jogging in knee-deep water?

A bungee cord is 30.0 m long and, when stretched a distance x, it exerts a restoring force of magnitude kx. Your father-in-law (mass 99.0 kg) stands on a platform 45.

According to Newton's third law, what is likely to happen if you attempt to jump horizontally from a small boat to the dock before the boat is securely tied up? A. The boat will sink from being pushed down. B.

Describe a situation in which different units of measure could cause confusion.

Which of the following lists the stars in order from least density to greatest density? A. white dwarf, neutron star, main sequence star, giant B. giant, main sequence star, white dwarf, neutron star C.

When Dr. Hewitt immerses an object in water the second time and catches the water that is displaced by the object, how does the weight lost by the object compare to the weight of the water displaced?