All categories

3 years ago

TRUE OR FALSE : Boyle’s law states that, as the pressure of a gas increases, the volume decreases.

2 answers:

6 0

True, but only if the temperature of the gas doesn't change ...
which is pretty hard to manage when you're compressing it.

I think Boyle's law actually says something like

(pressure) x (volume) / (temperature) = constant.

So you can see that if you want to say anything about two of the
quantities, you always have to stipulate that the statement is true
as long as the third one doesn't change.

NemiM [27]3 years ago

3 0

It's true, but the temperature of gas can NOT change.

You might be interested in

Why does the area around the equator stay about the same temperature year round?

Verdich [7]

Axial Tilt and Sun Energy

This axial tilt means that during the Earth's journey around the sun the poles receive varying amounts of sunlight. The equator, however, receives relatively consistent sunlight all year. The consistency of energy means the equator's temperature stays relatively constant all year.

3 0

4 years ago

A magnetic field directed along the x-axis changes with time according to B (0.06t2+2.25) T, where t is in seconds. The field is

Gemiola [76]

Answer:

$E = 2 \times 10^{-3} V$

Explanation:

As we know that rate of change in flux will induce EMF

So here we can

$EMF = \frac{d\phi}{dt}$

now we have

$EMF = \pi r^2\frac{dB}{dt}$

now we also know that induced EMF is given by

$\int E. dL = \pi r^2\frac{dB}[dt}$

$E (2\pi r) = \pi r^2\frac{dB}{dt}$

$E = \frac{r}{2}(\frac{dB}{dt})$

now plug in all values in it

$E = \frac{0.0133}{2}(0.12 t)$

$E = 8 \times 10^{-4} (2.50) = 2 \times 10^{-3} V/m$

5 0

4 years ago

Which one of the following statements regarding strength training workouts is most accurate

AnnZ [28]

Answer:

Explanation:

3 0

4 years ago

A cable with mass 0.5 kilograms per meter (kg/m) is used to lift 150 kg of coal up a mine shaft 50 meters deep. Set up the integ

zalisa [80]

Answer:

$W=-\int_{0}^{50}[150-0.5y]dy$

Explanation:

the integral for the work is:

$W=\int\vec{F}\cdot d\vec{l}=\int(-M(y)g)dy$

the work is against the gravitational force. While the coal is going up, M(y) is changing due to the length of the cable is lower. We can describe this by using the following formula

$M(y)=150kg-0.5\frac{kg}{m}y$

Thus , the integral for the work is:

$W=-\int_{0}^{50}[150-0.5y]dy$

hope this helps!!

6 0

4 years ago

A bus has velocity of 20 m/s towards east and another bus has velocity of 15 m/s in west direction . if they start to move from

Snezhnost [94]

Answer:

3.8 km

Explanation:

Eastern Side Bus

Velocity = 20m/s

Covers distance in 2 min (120sec) = 20×120 = 2400m = 2 km

Western Side Bus

Velocity = 15m/s

Covers distance in 2 min (120sec) = 15×120 = 1800m = 1.8 km

Separation Distance = 2+1.8 = 3.8 km

7 0

3 years ago