Which of the following best describes the difference between type a and type b

Answers

Answer 1

Answer: Is there supposed to be a picture? Next time try putting a picture

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Earth, the Sun, and billions of stars are contained within

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I think it is the Milky Way.

In the Milky Way galaxy

you lift a 30 N crate 2 meters onto a shelf. it takes you 5 seconds to accomplish this. how much gravitional potential energy does the crate gain

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Gravitational potential energy is equal to force times height. That's 30 x 2 = 60 Joules. It makes no difference how fast or how slow you do the lift.

Intro physics course is beginning to move into 2D kinematics, stuck on the first real question.A stone is thrown horizontally at 15m/s from the top of a cliff 44m high. What is the velocity of the rock after 2 seconds?
I tried 3(-9.8m/s2) and some other formula's but could never arrive at the correct answer of 24.7m/s. Could someone explain how to arrive at this answer and the reasoning behind it?

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-- You kick it horizontally, out off of the cliff, at 15 m/s. There's no horizontal
force on it, so its horizontal speed never changes.

-- As soon as it clears the edge of the cliff, gravity starts accelerating it
downward, 9.8 m/s faster every second. After 2 seconds, it has

   (2 x 9.8) = 19.6 m/s

of downward vertical speed.

At this point, its velocity points somewhere between horizontal and downward-
vertical. I gather from the wording of the question that you're not so much
concerned with the direction of the velocity as you are with its magnitude ...
that is, the stone's speed in whatever direction it's actually moving.

You have a vector with two components: 15 horizontal and 19.6 vertical.
Those components are perpendicular, so their resultant is just the hypotenuse
of the right triangle.

   (Speed)² = (15 m/s)² + (19.6 m/s)²

   = (225 m²/s²) + (384.16 m²/s²)

   = (609.16 m²/s²) .

   Speed = √(609.16 m²/s²) = 24.681 m/s

That's where the 24.7 m/s comes from. /\

(I just looked back at the question again. Notice that we don't care
how high the cliff is. That "44m" is in there only to distract those who
don't know what they're doing, and who think that they must use it
just because it's there.)

ok so the x velocity is 15 m/s with no acceleration
the y velocity is 19.62 after 2 seconds because of acceleration of 9.81 m/s x 2

the velocity can be found by making a diagram and solving through the pythagorean theorem

15 sq + 19.62 sq = velocity sq
225 + 384.9444 = velocity sq
velocity = sqrt 609.944
velocity = 24.7

Define the moment of a force

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The moment of a force can be described by a force applied to the end of an object whose other end is attached to a pivot or hinge, the force will tend to rotate the object about the pivot and the force have a turning effect.

Read the following dream interpretation and answer the question that follows."I suspect that the patient's dream of being chased originates from his unresolved feelings of guilt during childhood."
What perspective of dream interpretation is being offered?
A. Freudian
B. activation-synthesis
C. Jungian
D. motivation

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Answer:

Freudian

Explanation:

Answer:

Freudian

Explanation:

What allows us to stand upright and keeps us from falling through the ground?

Answers

while gravitational pull pulls us down the opposing force pusshes us upward and cancels each other out

Our spine and our muscles keep us standing up right, but the falling part I have no idea, I was wondering that myself.

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