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alexdok [17]
3 years ago
5

Grade 8 crossword puzzle

Advanced Placement (AP)
1 answer:
Ksju [112]3 years ago
7 0
Pic of the puzzle plz LEL XD
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Helicopter blades withstand tremendous stresses. In addition to supporting the weight of a helicopter, they are spun at rapid ra
Radda [10]
NOTE: Check your formula sheet if you have one these are often there.

Ac = \frac{V^{2} }{r} = rω^2

We know r = 4.00m

but what is ω?

ω = \frac{2π}{T} = 2π*f

f is our frequency. we want it in seconds so we can divide by 60.

300/60 = 5rev/s

Ac = rω^2 = (4)(5)^2 = 100m/s

(b) Linear speed or v is equal to v = ω = (5)(4) = 20m/s
      340 / 20 = 17

      The speed of sound is 17 times faster.

NOTE: finished physics so i might be rusty and use an equation wrong. Tell me if something doesnt make sense. Im still new to this myself.


7 0
3 years ago
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Can anyone help please!! worth 20 points!!!
Slav-nsk [51]
Your first choice is right
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3 years ago
What is the list of Thurstone’s primary mental abilities
inysia [295]
The seven primary mental abilities in Thrustone's model were verbal comprehension, word fluency, number facility, spatial visualization, associative memory, perpetual speed,and reasoning.
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3 years ago
A cart of mass m is pulled along a level dynamics track as shown above. A force sensor is attached to the cart with a string and
mart [117]

Answer:

  • <u>See the picture attached with the drawing of the forces.</u>

Explanation:

Find the figures with the question and the answer attached.

The answer shows the free body diagram with four arrows starting on, and pointing way from, the dot.

The red vertical upward arrow, labeled F_N, represents the normal force, which is the force exerted by the ground on the cart.

The red vertical downward arrow, labeled F_g, represents the gravity force (weight), which is the pull that the Earth exerts of the cart.

Both vertical arrows are of the same side because the normal force and the weight are balanced (since there is not vertical acceleration).

The blue horizontal arrow pointing to the right, labeled F_h, represents the horizontal pulling force exerted by the hand.

The blue horizontal arrow pointing to the left, labeled F_f, represents the frictional force which is not neglicible.

Since the cart is accelerating in the positive direction, toward the right,

F_h>F_f and the arrow to the right is larger than the arrow to the left.

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3 years ago
Follow me please:) I will give you points.3​
Gwar [14]

Answer: ok bet

Explanation:

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3 years ago
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