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mihalych1998 [28]
3 years ago
9

Mr. Bennet's class completed an investigation on magnetism. They found that most metals were attracted to magnets and plastics w

ere not. What will happen if Mr.
Bennet's class repeats the investigation?

A most metails would be attracted to magnets and plastics would not.

B plastics would be attracted to magnets and metals would not.

C both metals and plastics would be attracted to magnets.

D neither metals nor plastics would be attracted to magnets.
Physics
1 answer:
Vinil7 [7]3 years ago
7 0

Answer:

A

Explanation:

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The fraction of its volume inside liquid  is increased .

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If 2000 kg cannon fires 2 kg projectile having muzzle velocity 200 m/s then the KINETIC ENERGY of the CANNON will be ("E4" means
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Answer:

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KE = 1/2 M V^2 = 2000 / 2 kg * (.2 m/s)^2  = 40 kg m^2/s^2 = 40 J

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One wire carries a current of I1= 2 Amps, and the other carries a parallel current (same direction, wires are side by side) of I
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Answer:F=3\times 10^{-5} N

Explanation:

Given

I_1=2 Amps

I_2=0.75 Amps

Length of each wires\left ( L\right )=5 m

Distance between wires \left ( r\right )=5 cm

Force per unit length =\frac{\mu_0I_1I_2}{2\pi r}

F'=\frac{2\times 10^{-7}\times 2\times 0.75}{2\pi \times 0.05}

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6 0
3 years ago
What is the heat capacity of an object at 25.5∘C that absorbs 45 kJ of heat and is heated to 28.2∘C?
sergey [27]

Answer:

16.6 kJ/°C

Explanation:

given,

Amount of heat absorbed = 45 kJ

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3 years ago
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