1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
bearhunter [10]
3 years ago
12

The Danish scientist Niels Bohr proposed a model of the atom that is not totally accurate today but still contains components th

at are useful for today's students.
Bohr's model is sometimes called the __________ model because it resembles a mini-solar system.
A. universal
B. planetary
C. atomic
D. nuclear
Engineering
1 answer:
blagie [28]3 years ago
7 0

Answer:

Option B

Planetary

Explanation:

In 1913, Niels Bohr proposed a model to explain the stability of orbits around the nucleus. Niels believed that light is emitted by an electron when the electron's energy changes. Bohr Atomic Model is sometimes called planetary model because it resembles a mini-solar system.

You might be interested in
A heating system must maintain the interior of a building at TH = 20 °C when the outside temperature is TC = 2 °C. If the rate o
nasty-shy [4]

Answer:

a)Q_H=16.4kW

b) w=5.467

c)  w=1.2345

Explanation:

From the question we are told that:

Interior temperature TH = 20 °C

outside temperature is TC = 2 °C

Rate H=16.4kW

a)

Generally electric resistance heating is the heat transfer from interior building

Therefore

Q_H=R

Q_H=16.4kW

b)

COP =3

Generally the equation for coefficient of performance is mathematically given by

COP=\frac{Q_H}{w}

Therefore

w=\frac{Q_H}{COP}

w=16.4/3

w=5.467

c)

Generally the equation for coefficient of performance is mathematically given by

COP_r=\frac{TH}{TH-TC}

COP_r=\frac{20+273}{(20+273)-(2+273)}

COP_r=16.2

Therefore

w=1.2345

w=20/16.2

w=1.2345

5 0
3 years ago
Would be much appreciated if someone could help with this will give brainiest.
Mashcka [7]

Answer:   both mm and inches on each dimension in a sketch (with the main dimension in one format and the other in brackets below it), in the way you can have dual dimensions shown when detailing an idw view.

personally think it would look a mess/cluttered with even more text all over the sketch environment, but everyone's differenent.

If it's any help - you know you can enter dimensions in either format?  If you're working in mm you can still dimension a line and type "2in" and vice-versa.  Probably know this already, but no harm saying it, just in case.

You can enter the units directly in or mm and Inventor will convert to current document settings (which  you can change - maybe someone can come up with a simple toggle icon to toggle the document settings).  Tools>Document Settings>Units

Unlike SolidWorks when you edit the dimension the original entry shows in the dialog box so it makes it easy to keep track of different units even if they aren't always displayed.  (SWx does the conversion or equation and then that is what you get.)

I work quite a bit in inch and metric and combination (ex metric frame motor on inch machine) and it doesn't seem to be a real difficulty to me.

4 0
3 years ago
A steam power plant is represented as a heat engine operating between two thermal reservoirs at 800 K and 300 K. The temperature
Sergeeva-Olga [200]
Yeet is the answer .....
4 0
3 years ago
Army people are good people right
Phantasy [73]

Answer: Yes army people are good people but it also depends on how you fraze that some have been in trouble before but it doesnt mean there bad people we all make mistakes

5 0
3 years ago
Dampers dampers springs are used inside some valve spring to
harkovskaia [24]
The correct answer is A. Retain. Valve Stem seals
3 0
3 years ago
Other questions:
  • The reverse water-gas shift (RWGS) reaction is an equimolar reaction between CO2 and H2 to form CO and H2O. Assume CO2 associati
    10·1 answer
  • A resonant six-turn loop of closely spaced turns is operating at 50 MHz. The radius of the loop is λ/30, and the loop is connect
    15·1 answer
  • How do you calculate the dynamic lift in an aeroplane?
    5·1 answer
  • You doubled the voltage frequency in an RL series AC circuit, the inductive resistance would?
    8·2 answers
  • All of the following are categories for clutch covers except
    11·1 answer
  • Do you know who Candice is
    8·2 answers
  • Which of the following is an example of a social need?
    5·1 answer
  • Please help on two I will give brainiest​
    13·2 answers
  • What is the difference between the elements of design and the principles of design? Define at
    7·1 answer
  • On what kind of sectional drawing would you find the maximum length of a building?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!