Answer:
the sixth most abundant element in the earth's crust is sodium and it occupies 2.8%
Walt and Mary are my Customers at this point.
To construct proper client relationships you need to: greet clients and approach them in a way that is herbal and suits the character scenario. show customers that you recognize what their desires are. be given that a few humans may not want your merchandise and concentrate on constructing relationships with people who do.
Use the time period clients, with an apostrophe before the “s” to expose a possessive form for a single consumer. Use the time period clients', with an apostrophe after the “s” to show the possessive plural shape of a couple of patrons. Do now not use an apostrophe if there's no possessive indication needed.
The definition of a consumer is a person who buys services or products from a store, restaurant, or different retail vendor. An example of a patron is someone who is going to an electronics save and buys a tv. (Casual) a person, mainly one engaging in a few types of interaction with others.
Learn more about the Customers herehttps://brainly.com/question/24448358
#SPJ1
Answer:
(a) ![V=11.86\ V](https://tex.z-dn.net/?f=V%3D11.86%5C%20V)
(b) ![V=9.76\ V](https://tex.z-dn.net/?f=V%3D9.76%5C%20V)
Explanation:
<u>Electric Circuits</u>
Suppose we have a resistive-only electric circuit. The relation between the current I and the voltage V in a resistance R is given by the Ohm's law:
![V=R.I](https://tex.z-dn.net/?f=V%3DR.I)
(a) The electromagnetic force of the battery is
and its internal resistance is
. Knowing the equivalent resistance of the headlights is
, we can compute the current of the circuit by using the Kirchhoffs Voltage Law or KVL:
![\varepsilon=i.R_i+i.R_e=i.(R_i+R_e)](https://tex.z-dn.net/?f=%5Cvarepsilon%3Di.R_i%2Bi.R_e%3Di.%28R_i%2BR_e%29)
Solving for i
![\displaystyle i=\frac{\varepsilon}{ R_i+R_e}=\frac{12}{0.06+5.2}=2.28\ A](https://tex.z-dn.net/?f=%5Cdisplaystyle%20i%3D%5Cfrac%7B%5Cvarepsilon%7D%7B%20R_i%2BR_e%7D%3D%5Cfrac%7B12%7D%7B0.06%2B5.2%7D%3D2.28%5C%20A)
i=2.28\ A
The potential difference across the headlight bulbs is
![V=\varepsilon -i.R_i=12\ V-2.28\ A\cdot 0.06\ \Omega=11.86\ V](https://tex.z-dn.net/?f=V%3D%5Cvarepsilon%20%20-i.R_i%3D12%5C%20V-2.28%5C%20A%5Ccdot%200.06%5C%20%5COmega%3D11.86%5C%20V)
![V=11.86\ V](https://tex.z-dn.net/?f=V%3D11.86%5C%20V)
(b) If the starter motor is operated, taking an additional 35 Amp from the battery, then the total load current is 2.28 A + 35 A = 37.28 A. Thus the output voltage of the battery, that is the voltage that the bulbs have is
![V=\varepsilon -i.R_i=12\ V-37.28\ A\cdot 0.06\ \Omega=9.76\ V](https://tex.z-dn.net/?f=V%3D%5Cvarepsilon%20%20-i.R_i%3D12%5C%20V-37.28%5C%20A%5Ccdot%200.06%5C%20%5COmega%3D9.76%5C%20V)
1) The mass of the continent is ![2.13\cdot 10^{21} kg](https://tex.z-dn.net/?f=2.13%5Ccdot%2010%5E%7B21%7D%20kg)
2) The kinetic energy of the continent is 274.8 J
3) The speed of the jogger must be 2.76 m/s
Explanation:
1)
The continent is a slab of side 5900 km (so the surface is 5900 x 5900, assuming it is a square) and depth 26 km, therefore its volume is:
![V=(36)(4600)^2=7.62\cdot 10^8 km^3 = 7.62\cdot 10^{17} m^3](https://tex.z-dn.net/?f=V%3D%2836%29%284600%29%5E2%3D7.62%5Ccdot%2010%5E8%20km%5E3%20%3D%207.62%5Ccdot%2010%5E%7B17%7D%20m%5E3)
The mass of the continent is given by
![m=\rho V](https://tex.z-dn.net/?f=m%3D%5Crho%20V)
where:
is its density
is its volume
Substituting, we find the mass:
![m=(2790)(7.62\cdot 10^{17})=2.13\cdot 10^{21} kg](https://tex.z-dn.net/?f=m%3D%282790%29%287.62%5Ccdot%2010%5E%7B17%7D%29%3D2.13%5Ccdot%2010%5E%7B21%7D%20kg)
2)
To find the kinetic energy, we need to convert the speed of the continent into m/s first.
The speed is
v = 1.6 cm/year
And we have:
1.6 cm = 0.016 m
![1 year = (365)(24)(60)(60)=3.15\cdot 10^7 s](https://tex.z-dn.net/?f=1%20year%20%3D%20%28365%29%2824%29%2860%29%2860%29%3D3.15%5Ccdot%2010%5E7%20s)
So, the speed is
![v=\frac{0.016 m}{3.15 \cdot 10^7 s}=5.08\cdot 10^{-10}m/s](https://tex.z-dn.net/?f=v%3D%5Cfrac%7B0.016%20m%7D%7B3.15%20%5Ccdot%2010%5E7%20s%7D%3D5.08%5Ccdot%2010%5E%7B-10%7Dm%2Fs)
Now we can find the kinetic energy of the continent, which is given by
![K=\frac{1}{2}mv^2](https://tex.z-dn.net/?f=K%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
where
is the mass
is the speed
Substituting,
![K=\frac{1}{2}(2.13\cdot 10^{21})(5.08\cdot 10^{-10})^2=274.8 J](https://tex.z-dn.net/?f=K%3D%5Cfrac%7B1%7D%7B2%7D%282.13%5Ccdot%2010%5E%7B21%7D%29%285.08%5Ccdot%2010%5E%7B-10%7D%29%5E2%3D274.8%20J)
3)
The jogger in this part has the same kinetic energy of the continent, so
K = 274.8 J
And its mass is
m = 72 kg
We can write his kinetic energy as
![K=\frac{1}{2}mv^2](https://tex.z-dn.net/?f=K%3D%5Cfrac%7B1%7D%7B2%7Dmv%5E2)
where
v is the speed of the man
And solving the equation for v, we find his speed:
![v=\sqrt{\frac{2K}{m}}=\sqrt{\frac{2(274.8)}{72}}=2.76 m/s](https://tex.z-dn.net/?f=v%3D%5Csqrt%7B%5Cfrac%7B2K%7D%7Bm%7D%7D%3D%5Csqrt%7B%5Cfrac%7B2%28274.8%29%7D%7B72%7D%7D%3D2.76%20m%2Fs)
Learn more about kinetic energy:
brainly.com/question/6536722
#LearnwithBrainly