It takes 5.0 j of heat in increase the temp of a sample by 10 degrees celcius. if the mass is doubled, how much heat in joules will it take to increase the temp by 10.0 degrees. a. 50.0 jb. 5.0 jc. 10.0 jd. 15.0 j

c. 10.0 J

Explanation:

The heat (Q) needed to increase the temperature of a certain mass of a sample can be calculated using the following expression:

Q = c . m . ΔT

where,

c is the heat capacity

m is the mass

ΔT is the change in temperature

Let's call Q₁ (5.0 J) the heat to increase the temperature of the mass m₁ by ΔT = 10.0°C.

Q₁ = c . m₁ . ΔT

If the mass is doubled (m₂ = 2 m₁), the heat required is:

Q₂ = c . m₂ . ΔT = c . 2 . m₁ . ΔT = 2 . c . m₁ . ΔT = 2 . Q₁

Q₂ = 2 . Q₁ = 2 . 5.0 J = 10.0 J

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it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.