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padilas [110]
3 years ago
12

Why is magnetic force a non contact force?

Physics
1 answer:
lianna [129]3 years ago
6 0
Bcoz when you place a magnet close enough the magnet attracts or repals without any other fore we dont touch the magnet so it is non contact
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A large aquarium of height 6 m is filled with fresh water to a depth of D = 1.50 m. One wall of the aquarium consists of thick p
Vesnalui [34]

Answer

given,

height of aquarium = 6 m

Depth of fresh water = D = 1.50 m

horizontal length of the aquarium(w) = 8.40 m

total force increased when liquid is filled to depth = 4.30 m

g = 9.81 m/s²

ρ = 998 Kg/m³

force in the aquarium.

dF = PdA

F = \int PdA

F = \int \rho\ g\ y\ (wdy)

F = \rho\ g\ w \int ydy

F = \rho\ g\ w\dfrac{y^2}{2}

F = \dfrac{\rho\ g\ w\ y^2}{2}

At D = 1.5 m

F = \dfrac{980\times 9.8\times 8.4\times 1.5^2}{2}

F = 9.08 x 10⁴ N

At D = 4.30 m

F = \dfrac{980\times 9.8\times 8.4\times 4.3^2}{2}

F = 7.46 x 10⁵ N

Total force on the wall increased by

ΔF  = 74.6 x 10⁴ - 9.08 x 10⁴

ΔF  = 65.52 x 10⁴ N

5 0
3 years ago
A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?
Artyom0805 [142]

Answer:

This is the answer that I got.

Explanation:

Just check over it once.

5 0
2 years ago
true or false. because the speed of an object can change from one instant to the next, dividing the distance covered by the time
scoundrel [369]

true. Because the speed of an object can change from one instant to the next, dividing the total distance covered by the time of travel gives. average speed.

3 0
3 years ago
Read 2 more answers
If you were to stir salt in water until the salt disappeared, which is the solute?
emmainna [20.7K]
Salt is the solute in that situation

6 0
3 years ago
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When you're 10 or 20 miles away from the origin of an earthquake, the P-waves get to you a little bit before the S-waves. Which
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Explanation:

P, Primary, or Compressional waves travel the fastest (~6 km/sec in the upper crust). They cause the matter to oscillate forward and backward, parallel to the motion of the seismic wavefront. P waves push (compress) and pull (dilate) the rock that they pass through.

yor answe is (B)

4 0
3 years ago
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