Physics, 05.11.2019 13:31 EvoBruh3273

Which of the following is most closely related to the specific heat of a substance?
a. its temperature
b. its melting point
c. its amount of heat transferred
d. its rate of change in temperature

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Answer from: kaiya789

The following that is is most closely related to the specific heat of a substance is its rate of change in temperature. The answer is letter D. The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 Kelvin is called the specific heat. The answer is a. For example, water. Water has a specific heat of 4.18 Joules per kilogram per Kelvin. This means that in order for water to change from one state to the other at one kelvin, it needs 4.18 Joules of energy per one kilogram of water. But it does not apply to changes in phase, because the heat added or removed during a phase change does not change the temperature of a substance.

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Answer from: Quest

Ithink it’s 98 because jajajjajansmsmjs

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Which of the following is most closely related to the specific heat of a substance?
a. its te...

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