If steam enters a turbine at 600K and is exhausted at 400K, calculate the efficiency of the engine.

Why does the band of stability curve upward at high atomic numbers? excess neutrons are required due to the repulsion between the protons. atoms with high atomic numbers have a large number of electrons orbiting the nucleus.

Which describes the relationship between the frequency wavelength, and speed of a wave as the wave travels through different media? e non hanne wavelength channes and francu romaine constant

What is another term for linear diameter? A) actual diameter B) angular diameter C) celestial diameter D) apparent diameter

A rock tied to the end of a string moves in a circle of radius 1.2m with a constant speed of 3.0 m/s. Calculate the centripetal acceleration of the rock.

Which of the following gases is the heaviest? H2S, NH3, CO, SO2

A 0.8kg object accelerate at a rate of4 m/s2. What is the net force acting on a object

Which of the following is the best definition of an isotope? A. elements of the same kind with different numbers of neutrons B. elements of the same kind that have lost electrons C. elements of the same kind that have different electrical charges

Two cars approach each other; both cars are moving westward, one at 85 km/h, the other at 54 km/h. what is the magnitude of the velocity of the first car relative to (in the frame of reference of) the second car? answer in units of km/h.

What usually causes high concentration of minerals to form

The courtroom role that possesses the most discretion is?