Answer:
U=230 V
I=3.5 A
W=1932 kJ→ J=1932⋅ 1000 J=1932000 J
P=U⋅ I=230⋅ 3.5=805 W
W=Pt
t
1
=W/P=1932000/805=2400 s
t=t
1
→ min=t
1
/60 min=2400/60
min=40 min
Mrs. Pham has 8 apples. She wants to give 3/4 of the
apples to her students. How many apples will her
students get?
A system that captures incoming solar radiation, stores it, and distributes it throughout a building is called
active solar heating
photoelectric heating
cell heating
passive solar heating
Answer: Active solar heating
Explanation:
Active solar heating is a design which is used for the purpose of storage of solar heat for household purposes. The solar heat is used for heat up the liquid and the energy is transferred to the interior space of the house for later use. It distributes the heat throughout the building. Passive solar heating used for heating and cooling of the building but not reliable for storage purposes. Photoelectric heating convert the incident solar heat into electrical energy. Cell heating is a technology in which the thermal energy in a cell is converted into mechanical energy and it is used in machines.
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How can adding electricity to possible solutions of a problem help generate better outcomes?
i don't want to see any link
If i do you will be reported
Answer:
I hot u
Explanation:
it makes things function better and more fluently than a manual version of the certain object
Answer:
l m a o
Explanationl
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Which of the following are examples of energy sources
A. Water dam
B. Coal- fired generator
C. Solar panel array
D. Nuclear power reactor
E. Sea salt
F Gasoline
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Answer: A. Water dam
B. Coal- fired generator
C. Solar panel array
D. Nuclear power reactor
F. Gasoline
Explanation:
Water dam is a source of hydroelectrical energy as the energy produced by the high speed water currents can be used to generate electrical energy.
Coal fired generator is a source thermal energy.
Solar panel array converts the heat energy from the sun into electrical energy.
Nuclear power reactor converts the thermal energy from the radiations generated after the fusion and fission reactions of the heavy atoms in a nuclear reactor. The thermal energy is converted into electrical energy.
Gasoline is a source of thermal energy which is used to run the machine or vehicle. This way thermal energy is converted into mechanical energy.
Engineering uses scientific thinking to solve real-world problems.
True
False
100 POINTS! do sweedish people have yogurt do u think they have had yogurt and chimichangas do they have those
Answer:
yes, they have yogurt. i dont know anything about them having chimichangas.
Explanation:
Nonverbal communication has over ____ more impact on the message received than the actual words spoken. (1 point) A. 90% B. 50% C. None of the answer choices are correct D. 27%
Answer:
Option A, 90%
Explanation:
As per studies, Nonverbal communication impact is around 80-90% . It is so because, face to face communication strategies or Nonverbal communication involve study of following along with the words spoken by an individual while communicating with others -
Facial expressions
Eye contact
Body language
Tone of voice
Hence, option A is correct
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How can adding electricity to possible solutions of a problem help generate better outcomes?
i don't want to see any link
If i do you will be reported
Answer:
Explanation:
It will help because we can unlock new potential with electric and can help us with things we can’t do
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Distinguish how requirements contribute to the design process.
Answer:
If someone requires you to do something, like no blue, you have to change the blue to another color.
state four reasons why public participation is important in ensuring sustainable provision of services to the community
In this exercise we have to analyze the four reasons for public participation in the court is:
promote transparency, encourage openness in government build ownership of development decisions as well as programmes and projects. What makes up a Court?
The Jury Court is composed of a presiding judge and twenty-five jurors, of which seven will be drawn to compose the sentencing council and who will have the task of affirming or denying the existence of the criminal act attributed to a person. Jurors decide on the matter of fact and whether the accused should be acquitted.
It is a way of promoting knowledge of society in a court and demonstrating that it is a correct court of indifferent.
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A 25mm square cross-section bar of length 300mm carries an axial compressive
load of 50kN. Determine the stress set up in the bar and its change of length when the
load is applied. For the bar material E = 200 GN/m
^2
Answer:
The correct answer is "299.88 mm".
Explanation:
The given values are:
Length,
[tex]l_o=300 \ mm[/tex]
Load,
[tex]P=50 \ kN[/tex]
i.e.,
[tex]=50\times 10^3 \ N[/tex]
[tex]E=200 \ GN/m^2[/tex]
[tex]=2\times 10^5 \ M/mm^2[/tex]
Now,
Stress,
⇒ [tex]\sigma=\frac{P}{A}[/tex]
On substituting the values, we get
⇒ [tex]=\frac{50\times 10^3}{25\times 25}[/tex]
⇒ [tex]=80 \ N/mm^2[/tex]
The change in length will be:
⇒ [tex]\Delta l=\frac{Pl}{AE}[/tex]
On substituting the values, we get
⇒ [tex]=\frac{50\times 10^3\times 300}{25\times 25\times 2\times 10^5}[/tex]
⇒ [tex]=\frac{15000\times 10^3}{1250\times 10^5}[/tex]
⇒ [tex]=0.12 \ mm[/tex]
hence,
⇒ [tex]L=l_o-\Delta l[/tex]
[tex]=300-0.12[/tex]
[tex]=299.88 \ mm[/tex]