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Greeley [361]
2 years ago
13

Help me its just true or false​

Physics
2 answers:
snow_lady [41]2 years ago
6 0
False
False
True
False
False
Aneli [31]2 years ago
6 0

Answer:

11-false

12-false

13-false

14-false

15-false

Explanation:

11- Magnets only attract metal

12- They will repel not pull together

13- The magnet on the horseshoe is only magnetic to the hoof

14-Two opposites on a magnet will attract  eachother

15-NOOO

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Which type of wave moves both energy and the particles in the same direction as the medium?
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Longitudinal waves

Explanation:

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You walk 53 m to the north, then you turn 60° to your right and walk another 45 m. Determine the direction of your displacement
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3 years ago
Mercury has a mass of 3.3 e 23 kg and a radius of 2.44 e 6 m. Find Mercury's
valentina_108 [34]

Answer:

11.) g = 3.695 m/s^2

12.) g = 8.879 m/s^2

13.) E = 8127 N/C

Explanation:

11.) Given that the

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g = GM/r^2

Substitutes all the parameters into the formula

g = (6.67408 × 10^-11 × 3.3 × 10^23)/(2.44×10^6)^2

g = 2.2×10^13/5.954×10^12

g = 3.695 m/s^2

12.) Given that the

Venus mass M = 4.87×10^24kg

Radius r = 6.05 × 10^6 m

Using the same formula for gravitational field strength g

g = GM/R2

Substitute all the parameters into the formula

g = (6.67408 × 10^-11 × 4.87×10^24)/(6.05×10^6)^2

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g = 8.879 m/s^2

13.) Given that the

Charge = 2.26 nC = 2.26×10^-9

Distance d = 0.05m

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E = Kq/d^2

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K = electrostatic constant 8.99 × 10^9 Nm2/C2

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E = (8.99 × 10^9 × 2.26×10^-9)/0.05^2

E = 20.3174/2.5×10^-3

E = 8126.96 N/C

7 0
4 years ago
This engineer invented the iron wire to replace hemp rope.
IceJOKER [234]
The answer is A John Roebling.
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4 years ago
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