Air at 27 ºC and 5 atm is throttled by a valve to 1 atm. If the valve is adiabatic and the change in kinetic energy is negligible, what is the exit temperature of the air?

Name and classify Si and Sb. A) Sarium and siobium are metals. B) Silicon and antimony are metalloids. C) Silinium and sirbonium are non-metals. D) Silver and seaborgium are transition metals.

Who was the last astronaut to walk on the moon? Neil Armstrong Alan Shepard Ken Mattingly Eugene Cernan

Mendeleev noticed that if he organized the elements by atomic weight certain patterns emerged. for instance, elements in the same group (family) appeared to have the same

You get up in the morning, get dressed, eat breakfast, walk to the bus stop, and ride to school. List three different energy transformations that have taken place.

60m27Co → 6027Co Predict the type of radioactive emission produced from the decay of metastable cobalt-60 to cobalt-60. Describe this type of emission and its reaction to an electric field.

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...