A heat engine has a cold reservoir of 250°C and a hot reservoir of 715°C. What is the efficienvy of the engine?

The saturnian moon io probably collided with

a circuit contains 2 ohm and 4 ohm resistors connected in parallel, find the total resistance & the amount of current in each resistor if it was connected to a 12 v battery

The sum of all the potential energy and kinetic energy is an object is equal to its A-thermal energy B-kinetic energy C-potential force D-force

Three long cables running north and south, are tightly enclosed in an insulating sheath. One of the cables carries a 23 A current southward and the other two carry currents of 17 A and 11 A northward.

Where is the independent variable usually located in a scientific table? First column Second column Third through fifth columns First and second columns

Which formula describes acceleration? m/s^2 m/s s/m m2

An arrow is shot upward on mars from ground level with a velocity of 60 meters per second. Its height (in meters) after t seconds is given by 2 s (t) = 60t - 1.9t^2.

Energy transformations in a bouncy house

Suppose gene A on the left chromosome is damaged and no longer functions. what form of the trait would show? Why?

What is the use of scientific knowledge and research for an action