The speed of water waves decreases as the water becomes shallower. Suppose waves travel across the surface of a lake with a speed of 2.3 m/s and a wavelength of 1.8 m . When these waves move into a shallower part of the lake, their speed decreases to 1.9 m/s , though their frequency remains the same.

Study the diagram showing the range of temperature in the earth’s layers. which temperature most likely corresponds to the asthenosphere? 1,613°c 2,521°c 3,628°c 6,217°c

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?