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postnew [5]
3 years ago
12

I understand what makes a kettle so efficient, but what are some improvements you can make to a kettle to increase it’s energy e

fficiency?
Physics
1 answer:
shusha [124]3 years ago
3 0

Answer:

Reheat the cold cup of tea or coffee in the microwave. ...

Make iced tea or coffee with what's left. ...

Use a thermos for either tea or coffee.

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A circuit is constructed with six resistors and two batteries as shown. the battery voltages are v1 = 18 v and v2 = 12 v. the po
VladimirAG [237]

Answer:

V4=9.197v

Explanation:

Given:

V1= 18v ,V2= 12v ,r1=r5=58ohms ,r2=r6=124ohms , r3=47ohms ,r4= 125ohms

V4= I4R4 = V2/(R4 + R5)×R4

V4= 12×125 /(125 + 58)

V4=1500/183 =9.197v

5 0
3 years ago
True or false. when objects collide , some momentum is lost
ycow [4]

Answer:

It is neither false nor true. When they collide some of one of the objects goes to the other object.

Explanation:

5 0
2 years ago
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Which image illustrates why dark clothing helps to keep you warm on a cool, sunny day?
xeze [42]

Answer:

Explanation:

I suppose it has to do with the way the diagram is drawn. The heat does not reflect which makes both A and B incorrect.

C would have nothing to do with either reflection or refraction.

That only leaves D which is the answer.

7 0
3 years ago
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Give three examples of how gravity is at work in our solar system.
musickatia [10]
Well.....
Gravity from the sun pulls the planets torward it while inertia pulls it outward....but I guess that would be why it orbits sorry if this doesn't help but uh
6 0
3 years ago
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A brick is lying on a table in a state of static equilibrium. If the mass of the brick is 7.52 kilograms, what is the normal for
frez [133]
In mechanics, the normal force<span> is the component, perpendicular to the surface (surface being a plane) of contact, of the contact </span>force<span> exerted on an object . We calculate as follows:

</span>∑F along x = 0 = F - Fn
<span>
Fn = F = mg = 7.52(9.81) = 73.77 N <------OPTION B</span>
5 0
3 years ago
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