A train passes a stationary observer. Which of

the following best describes how the amplitude

and the apparent frequency of the sound waves

heard by the observer change as the train moves

away?

The part of the mantle called the ___ is made out of soft rock that bends like plastic

What is it called when something dissolves into something else

Does the universe ever stop?

What is newtons law?

An engineer discovered that a TV set was receiving too much voltage to work properly. Which of the following circuit parts should the engineer add to make the TV set work properly? A. Switch B. Insulator C. Resistor D. Conductor

True or False: If the initial speed of an object is zero, then the initial position of the object must be the origin. Explain

que potencia se disipa en un aparato eléctrico que opera con un voltaje de 60V y una corriente eléctrica de 1.5 A

List three things you have done today that used kinetic energy.

Aerogenerators are used to produce electricity from

Explain why science is a continuous progression of study