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3 years ago

How do magnetic force field work?

Physics

1 answer:

astraxan [27]3 years ago

3 0

Source: https://sciencing.com/magnetic-fields-work-4682419.html

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Question: A net force of 16 N [40° W of N] is caused by two applied forces acting on the same object. These two forces are: A) 1

Kaylis [27]

The answer is C.......

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3 years ago

Many hot-water heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the w

Andre45 [30]

Answer:

$108.306\times 10^{-6}m^3$

Explanation:

According to volume thermal expansion the expansion in volume due to temperature is given by $\Delta V=V_0\beta \Delta T$ here $\beta$ is coefficient of volume expansion

The volume of copper pipe before expansion is $V_0=\pi r^2L=3.14\times (9.20\times 10^{-3})^2\times 59.7=0.0158m^3$

Now the increase of copper pipe due to increase in temperature = $\Delta V_c=V_0\beta _c\Delta T=0.0158\times 51\times 10^{-6}\times (64.5-20.5)=35.6\times 10^{-6}m^3$

As $\beta$ for copper is $51\times 10^{-6}$

Now the increase of water due to increase in temperature = $\Delta V_w=V_0\beta _c\Delta T=0.0158\times 207\times 10^{-6}\times (64.5-20.5)=143.906\times 10^{-6}m^3$

As $\beta$ for water is $207\times 10^{-6}$

So the minimum volume of reservoir tank to hold the overflow of water = $\Delta V=\Delta V_w-\Delta V_c=143.906\times 10^{-6}-35.6\times 106{-6}=108.306\times 10^{-6}m^3$

3 0

3 years ago

A car, initially traveling 28.0ft/s, steadily speeds up to 50.0ft/s in 7.40s. Determine all unknowns and answer the following qu

nataly862011 [7]

Explanation:

Given:

$v_0 = 28.0\:\text{ft/s}$

$v = 50.0\:\text{ft/s}$

$t = 7.40\:\text{s}$

First, we calculate the acceleration of the car during this time:

$v = v_0 + at \Rightarrow a = \dfrac{v - v_0}{t}$

Plugging in the given values, we get

$a = \dfrac{50.0\:\text{ft/s} - 28.0\:\text{ft/s}}{7.40\:\text{s}} = 2.97\:\text{ft/s}^2$

Now that we have the value for the acceleration, we can solve for the distance traveled during the time t:

$x = v_0t + \frac{1}{2}at^2$

$\:\:\:\:=(28.0\:\text{ft/s})(7.40\:\text{s})$

$\:\:\:\:\:\:\:\:\:\:\:\:+ \frac{1}{2}(2.97\:\text{ft/s}^2)(7.40\:\text{s})^2$

$\:\:\:\:= 289\:\text{ft}$

7 0

2 years ago

Someone, please help me!!!! <br> no stupid comments please!

natta225 [31]

Answer:

1) d 2) a 3)

Explanation:

4) B would be brighter and more useful than A because A is all bunched up together without any room for extra energy meanwhile B has plenty of room for more energy

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2 years ago

Sound is a mechanical wave; therefore, it __________.

avanturin [10]

A mechanical wave such as sound needs a medium to travel through. This is why they say that in space, no one can hear you scream (because space is a vacuum and no medium exists). On the contrary, light can exist in wave or particle form. This is why we have the ability to see beyond the realms of the Earth.

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3 years ago

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