It's kind of funny really. The guy who invented the idea in the first place had actually been made fun of because the thought of that happening was improbable in their mind. Also, Wegener ( the guy who invented the idea) was not even a geologist but a meteorologist. But later it had been backed up due to earthquakes being record consecutively in one area, and the graphs turning out differently.
Answer:
From question (a) and (b) the pendulum motion is perpendicular to the force so the normal force will do no work and the tension in the string of the pendulum will not work
And 
so
c
An example will be a where a stone is attached to the end of a string and is made to move in a circular motion while keeping the other end of the string in a fixed position
d
A dog walking along a surface which has friction, here the frictional force would acting in the direction of the motion and this would do positive work
Explanation:
Mainly it belongs in the deciduous forest biome. The U.S also includes the desert, tundra, and coniferous forest biomes.
Put this under 'Geography' next time.
Hope this helps!
~GeeksandNerds
Issac Newton
In the 17th century, Isaac Newton discovered that prisms could disassemble and reassemble white light, and described the phenomenon in his book Opticks. He was the first to use the word spectrum (Latin for "appearance" or "apparition") in this sense in print in 1671 in describing his experiments in optics.
Answer:if you know the history, you know the best dig site in a way where you know your roots and where the best place is.
Explanation:let’s say that if someone was going on a trip to a foreign country, they would do a little research to know what they were expecting. Similarly, if you were picking a Destiination for your dig site, you would have to do a little research for example, like the earths history to know where the greatest treasures you could find and make the most discoveries while in your dig site.
