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mario62 [17]
3 years ago
10

Mechanical energy is a term that is used to describe A. kinetic energy only. B. both potential and kinetic energy. C. potential

energy only. D. neither potential nor kinetic energy.
Physics
2 answers:
gayaneshka [121]3 years ago
7 0
B. both potential and kinetic energy

myrzilka [38]3 years ago
5 0

Answer: B. both potential and kinetic energy.

Explanation:

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Worth 15 points<br><br> Please answer which one matches for each conversion
FrozenT [24]

Answer:

distance - meters

speed - meters/seconds

time - seconds

velocity - meters/seconds

acceleration - meters/seconds²

5 0
2 years ago
Raindrops fall vertically at 7.5 m/s relative to the Earth. What does an observer in a car moving at 20.2 m/s in a straight line
Vilka [71]

Answer:

vDP = 21.7454 m/s

θ = 200.3693°

Explanation:

Given

vDE = 7.5 m/s

vPE = 20.2 m/s

Required:  vDP

Assume that

vDE to be in direction of - j

vPE to be in direction of i

According to relative motion concept the velocity vDP is given by

vDP = vDE - vPE     (I)

Substitute in (I) to get that

vDP = - 7.5 j - 20.2 i

The magnitude of vDP is given by

vDP = √((- 7.5)²+(- 20.2)²) m/s =  21.7454 m/s

θ = Arctan (- 7.5/- 20.2) = 20.3693°

θ is in 3rd quadrant so add 180°

θ = 20.3693° + 180° = 200.3693°

4 0
3 years ago
Although he did not present a mechanism, what were the key points of Alfred Wegener’s proposal for the concept of continental dr
valentinak56 [21]

Answer: Alfred Wegener provided some of the important points that supported the theory of continental drift. They are as follows-

  1. The continents were once all attached together, and this can be proved by studying the coastlines of some of the continents that perfectly matches with one another.
  2. The appearance of similar rock types and similar fossils (including both animals and plants) has also contributed much information that continents were once all together.
4 0
3 years ago
A bird flies north with a force of 11N, the air resistance is 2N. How do i do a diagram of this?
Novay_Z [31]
This is a diagram from above, the air resistance is oppose to movement, the bird is moving forward given its force is bigger.

7 0
3 years ago
The change in elevation from one contour line to the next is called the
Ad libitum [116K]
Yeah it’s counter interval
8 0
3 years ago
Read 2 more answers
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