I am only a HS Freshman so I might be wrong
Answer:
3. Its potential energy and the formula for PE = mgh so you would use the weight given (Weight = mg) and mg is in the (Potential Energy) forumula so we multiply 3 by 30 and get 90 Joules
4. We would do the same thing with this: PE = mgh; PE = 10*3 = 30 Joules
Once again I am only a Freshman and I have taken Private AP Physics classes so just maybe wait for someone who is more confident.
This is just what I would answer
btw, for problem 5, the fromula for kinetic energy is 1/2*m*v^2
Answer:
7. 1.56
8. A curved line that slopes upward
Explanation:
7. The curve for quartz at the left side of the graph (400 nm) is just above the middle of the distance between 1.5 and 1.6, so is best approximated by 1.56.
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8. The graph shows n vs. wavelength. The question asks about n vs. frequency. Frequency is inversely proportional to wavelengh, which means you need to describe the curve from right to left, rather than left to right. From right to left, the curve rises, so can be called "a curved line that slopes upward."
Answer:
continuous change in position with respect to time
Explanation:
Velocity is defined as the rate of change of the position of an object with respect to its time.
It's the vector quantity of speed as it has both magnitude and direction.
Hope this helps :)
Answer:
It's called empathy
Explanation:
All you gotta do is think about it for a minute
Answer:
175.96 g
Explanation:
Potential energy required for the man to climb 7.07 km = m g h.
= 64 x 9.8 x 7070
= 4.434 x 10⁶ J
= 4.434 X 10⁶ / 4.2 cals
= 1.0557 x 10⁶ cals
= 1.0557 x 10⁶ / 6000 g of butter
= 175.96 g of butter.
