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Alexeev081 [22]
3 years ago
7

Which two statements best determine whether an engineering design is

Physics
1 answer:
pshichka [43]3 years ago
7 0

Answer: A and B

Explanation:

just took the apex test

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B answr is right there
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Which of the following best describes gravitational force?
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An attraction between two objects that have mass :)

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musickatia [10]

The water. Take the specific heat of steel, estimate the volume of the nail, you know the volume of the water, which has a specific heat of one. Or be obvious. If you dropped a red hot nail into a liter of cold water, what would happen?

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A teacher points to a microscope sitting on the desk. Which conclusion best explains
Blababa [14]

Answer:

The object is sitting

Explanation:

Therefore the object cannot be in current motion as no force has been acted upon it (exept gravitational force)

8 0
3 years ago
(a) and (b) ??Thanks <br>HELP <br>d8 =1​
garri49 [273]

Explanation:

(a) You can solve this using kinematics or energy.

Using kinematics:

a = F/m = 90 N / 4 kg = 22.5 m/s²

v₀ = 0 m/s

Δx = 5 m

Find: v

v² = v₀² + 2aΔx

v² = (0 m/s)² + 2 (22.5 m/s²) (5 m)

v = 15 m/s

Using energy:

W = ΔKE

Fd = ½ mv²

(90 N) (5 m) = ½ (4 kg) v²

v = 15 m/s

(b) ΔU = mg Δh

ΔU = (4 kg) (9.8 m/s) (12 m sin 40° − 15 m)

ΔU = -290 J

W = ΔU = -290 J

7 0
2 years ago
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