Physics, 26.06.2019 15:30 nancye2008

Arectangular block of copper metal has a mass of 1896g. the dimensions of the block is 213cm3 . what is the density of copper?

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Answer from: michelle5642b

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So remember that Density = mass/volume . In this case, the mass is 1896 g and the volume is 213 cm³. With this information, divide as such:

$D=\frac{1896g}{213cm^3}\\\\D\approx 8.90\ g/cm^3$

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In short, the density of the copper is (rounded to the hundredths) 8.90 g/cm³

Answer from: Quest

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

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.

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Arectangular block of copper metal has a mass of 1896g. the dimensions of the block is 213cm3 . what...

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