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Sever21 [200]
3 years ago
14

The atom in the diagram has neutral charge. How many protons does it have

Physics
1 answer:
Pepsi [2]3 years ago
3 0

Answer:6

Explanation:

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Air conditioners sold in the United States are given a seasonal energy-efficiency ratio (SEER) rating that consumers can use to
amid [387]

Answer:

112.58

Explanation:

The Coefficient of Performance of any system is denoted by COP=Q/W, where Q is the useful heat supplied or removed and W is the work required by the system. According to the first law of thermoddynamics Qh= Qc + W, where Qh is the heat transfered to the hot reservoir and Qc is the heat collected from the cold reservoir. Substituting the values for W and apllying the limitation for maximum theoretical efficiency we end up with the eqution shown below.

The Coefficient of Performance of air conditioner or COP is denoted by

COP(cool) = Tc/(Th- Tc)

where Tc: the lowest temperature

           Th: the highest temperature

converting the values to Kelvin and adding them in the above equation

COP(cool) = (25+273)/((34+273)-(25+273))

                 = 298/(307-298)

                 = 298/9 = 33.11

From the question, it is stated that COP=SEER/3.4

hence, SEER= COP * 3.4

SEER= 33.11 * 3.4 = 112.58

7 0
3 years ago
Alcohol poisoning affects what part of our body, which can lead to death?
Vladimir79 [104]

Answer:

the answer is A: voluntary reflexes

Explanation:

because Alcohol poisoning can effect the brain which voluntary is something in the brain

7 0
3 years ago
A​ right-circular cylindrical tank of height 8 ft and radius 4 ft is laying horizontally and is full of fuel weighing 52 ​lb/ft3
tresset_1 [31]

Given:

Height of tank = 8 ft

and we need to pump fuel weighing 52 lb/ ft^{3} to a height of 13 ft above the tank top

Solution:

Total height = 8+13 =21 ft

pumping dist = 21 - y

Area of cross-section = \pi r^{2} =  \pi 4^{2} =16\pi ft^{2}

Now,

Work done required = \int_{0}^{8} 52\times 16\pi (21 - y)dy

                                  = 832\pi \int_{0}^{8} (21 - y)dy

                                  = 832\pi([ 21y ]_{0}^{8} - [\frac{y^{2}}{2}]_{0}^{8}\\)

                                  = 113152\pi = 355477 ft-lb

Therefore work required to pump the fuel is 355477 ft-lb

7 0
3 years ago
Which of the following is NOT an example of a girl on a bike who is accelerating?
Serggg [28]

Answer:

the bike would not be moving

Explanation:

7 0
3 years ago
A car is driven 225 km west and then 98 km southwest (45).
slava [35]
Sum the vector components: Dx = 225* Cos(180)+ 78*Cos(225)= -280.154 km Dy = 225* Sin(180)+ 78*Sin(225) = -55.154 km displacement: Sqrt(Dx^2+Dy^2) = 285.532 km Arctan(Dy/Dx) = 191.137degrees CCW OR: 11.137 degrees South of West
4 0
3 years ago
Read 2 more answers
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