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tresset_1 [31]
4 years ago
14

Please Help! When a metal is heated, the free electrons gain _____________.

Physics
2 answers:
lakkis [162]4 years ago
7 0
It’s B potential energy
skelet666 [1.2K]4 years ago
6 0

Answer:

When a metal is heated, the free electrons gain

c. kinetic energy

Explanation:

Kinetic energy is an energy possessed  by an object  due to its movement.

Metals contain free electrons  which are called delocalised electrons, they move freely, when a metal is heated they vibrate and  move more quickly - this electrons gain kinetic energy from the excess vibrating ions. They move around thereby transferring some of their energy to the nearby particles

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Answer:

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Explanation:

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3 years ago
A 50.0 kg object is moving at 18.2 m/s when a 200 N force is applied opposite the direction of the objects motion, causing it to
Gekata [30.6K]

Answer:

t = 1.4[s]

Explanation:

To solve this problem we must use the principle of conservation of linear momentum, which tells us that momentum is conserved before and after applying a force to a body. We must remember that the impulse can be calculated by means of the following equation.

P=m*v\\or\\P=F*t

where:

P = impulse or lineal momentum [kg*m/s]

m = mass = 50 [kg]

v = velocity [m/s]

F = force = 200[N]

t = time = [s]

Now we must be clear that the final linear momentum must be equal to the original linear momentum plus the applied momentum. In this way we can deduce the following equation.

(m_{1}*v_{1})-F*t=(m_{1}*v_{2})

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m₁ = mass of the object = 50 [kg]

v₁ = velocity of the object before the impulse = 18.2 [m/s]

v₂ = velocity of the object after the impulse = 12.6 [m/s]

(50*18.2)-200*t=50*12.6\\910-200*t=630\\200*t=910-630\\200*t=280\\t=1.4[s]

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