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2 years ago

7

Which term could be used to explain why someone could safely sit on a hot wooden bench but not a hot metal bench? A. Radiation B

. Specific heat capacity C. Convection D. Kelvin

2 answers:

PilotLPTM [1.2K]2 years ago

5 0

B. specific heat capacity
hope this helps

Tasya [4]2 years ago

4 0

B. That’s the correct answer

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2 years ago

A sled of mass 2.12 kg has an initial speed of 5.49 m/s across a horizontal surface. The coefficient of kinetic friction between

Darya [45]

Answer:

The speed of the sled is 3.56 m/s

Explanation:

Given that,

Mass = 2.12 kg

Initial speed = 5.49 m/s

Coefficient of kinetic friction = 0.229

Distance = 3.89 m

We need to calculate the acceleration of sled

Using formula of acceleration

$a = \dfrac{F}{m}$

Where, F = frictional force

m = mass

Put the value into the formula

$a=\dfrac{\mu mg}{m}$

$a=\mu g$

$a=0.229\times9.8$

$a=2.244\ m/s^2$

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Using equation of motion

$v^2=u^2-2as$

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