4 years ago

Which state of matter is best at conducting heat?

Physics

2 answers:

Black_prince [1.1K]4 years ago

7 0

<span>A state f matter best at conducting heat would be solids.</span>

jek_recluse [69]4 years ago

4 0

Solids are the best at conducting heat.

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When the current through an electromagnet ceases, what generally happens to the magnetic field?

kati45 [8]

When the current flow ceases, the magnetic flow also decreases

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3 years ago

A child sleds down a frictionless hill with vertical drop h. At the bottom is a level stretch where the coefficient of friction

andrew11 [14]

Answer:

Explanation:

Velocity at the bottom of height h

= √2gh

deceleration on rough horizontal surface

= μg , μ is coefficient of friction

= .27 x 9.8

= 2.646 m / s²

v² = u² - 2as

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3 years ago

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brilliants [131]

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3 years ago

A 25kg chair initially at rest on a horizontal floor requires 165 N force to set it in motion. Once the chair is in motion, a 12

bazaltina [42]

The coefficient of static friction between the chair and the floor is 0.67

Explanation:

Given:

Weight of the chair = 25kg

Force = 165 N (F_applied)

Force = 127 N (F_max)

To find: Coefficient of static friction

The “coefficient of static friction” between a chair and the floor is defined as the ration of maximum force to the normal force acting on the chair

μ_s= $F_{max}/F_{n}$

The F_n is equal to the weight multiplied by its gravity

∴ $F_{n}$ =mg

Thus the coefficient of static friction changes as

μ_s= $F_{max}/mg$

μ_{s} = $=165N/((25kg)\times(9.80 m/s^2 ) )$

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3 years ago