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4 years ago

Compared to water, most metals have low specific heats. true or false

2 answers:

8 0

Yes that's a true statement. That's why grandmother put a hot water bottle to warm up her bed, and not a hot bar of steel or lead.

Elena-2011 [213]4 years ago

8 0

True Because certain metals conduce more beat than others

You might be interested in

If a set of displacement vectors laid head to tail make a closed polygon, what is the resultant vector?

Papessa [141]

The resultant vector is zero.

Explanation:

When you add displacement vectors using the head to tail method, you follow this procedure:

- Draw the first vector

- Draw the second vector, with its tail starting from the head of the first vector

- Draw the third vector, with its tail starting from the head of the second vector

.. and so on.

The resultant of the all vectors will be the vector connecting the tail of the 1st vector to the head of the last vector.

In this problem, the vectors make a closed polygon: this means that the head of the last vector coincides with the tail of the first vector.

Therefore, this means that the length of the resultant vector is zero.

Learn more about vector addition:

brainly.com/question/11220787

brainly.com/question/2892784

#LearnwithBrainly

4 0

3 years ago

Which of the following best summarizes the quantum model of atoms?

Lelechka [254]

I believe it is A. Electrons reside in known positions in fixed orbits around the nucleus

6 0

3 years ago

A material through which electronics do NOT easily flow is

ziro4ka [17]

Resistor. The answer is a resistor. They do not transmit electricity.

6 0

3 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

There are 3600 in a full circle. a. How many arcminutes are in a full cycle? b. How many arcseconds are in a full cycle?

liberstina [14]

Answer:

21600

1296000

Explanation:

Full cycle consists of

$360^\{circ}$

1 hour = 3600 seconds

1 minute = 60 seconds

Converting to arcminutes

$360\times 60=21600\ arcseconds$

The arcminutes in a full cycle is 21600

Converting to arcseconds

$360\times 60\times 60=1296000\ arcseconds$

The arseconds in full cycle is 1296000

4 0

3 years ago