An electric current that is varied to represent information is a (n)

a. electronic signal

b. digital signal

c. integrated circuit

d. electromagnetic wave

You slide a coffee mug across the table. The mug slides to the east and slows down while sliding. Which of the following statements best describes the net force acting on it? O The net force is zero. O The net force is directed east.

Each of the following equations was given by a student during an examination. a) 1/2mv2=1/2mv2+m2 gh b) v=u+at2 c) ma=v2 Do the dimensional analysis of each equation and explain why the equations cannot be correct

An _ is a logical conclusion based on information or evidence

Astronomers are comparing two stars that are known to have the same luminosity. Star A is observed to be 4 times brighter than star B. How far away is Star A compared to Star B?

Which type of mountain is created when rock layers are pushed up by forces inside the Earth? a. Fault-block c. Folded b. Upwarped d. Volcanic

Given the diamond shape of a baseball field and the speed with which baseballs are hit, why is it harder for a hitter to hit a homerun to center field than to right or left field? (Consider the effect of air drag on fast moving projectiles.)

What is the arrangement of the forms of electromagnetic radiation according to their wavelengths?

A helium atom consists of two protons, two electrons, and two neutrons. In the helium atom, the strong force is a fundamental interaction between the (1) electrons, only (2) electrons and protons (3) neutrons and electrons (4) neutrons and protons

What is the term for water droplets that have accumulated in the air until they have become so heavy they have fallen back to earth?

What is resonance? How is the velocity of sound in air determined by resonance tube method?