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
liq [111]
3 years ago
7

Eric has a mass of 80 kgkg. He is standing on a scale in an elevator that is accelerating downward at 1.7 m/s2m/s2. What is the

approximate reading on the scale?
Physics
1 answer:
kolezko [41]3 years ago
5 0

Answer:

The answer will be 936 N.

Explanation:

Given that

m = 80 kg

Acceleration of the elevator , a= 1.7 m/s²  ( upward)

The gravity force on the mass = m g

The reading on the scale = F N

Now by applying the Newton's second law

F - m g = ma

F= m g + m a

F= m ( g +a )

F= 80 ( 10 + 1.7 ) N                                  ( take g= 10 m/s²)

F=80 x 11.7 N

F= 936 N

Therefore the reading on the scale will be 936 N.

The answer will be 936 N.

                                                               

You might be interested in
Why is warm up important?
atroni [7]
Because it stretches and makes your muscles ready for the activity
5 0
3 years ago
Read 2 more answers
On the basis of electronegativity, which of these pairs of elements is most likely to form monatomic ions?
iren [92.7K]
The best and most correct answer among the choices provided by your question is the fourth choice.

Chlorine and sodium are most likely to form monatomic ions.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
3 0
2 years ago
Calculate, for the judge, how fast you were going in miles per hour when you ran the red light because it appeared Doppler-shift
sammy [17]

Answer:

The doppler effect equation is:

f' = \frac{v +v0}{v - vs}*f

In the equation we have frequencies, but then we have the wavelengths of the lights, remember the relation:

v = f*λ

then:

f = v/λ

and v is the speed of light, then:

f = c/λ

where:

f' is the observed frequency, in this case, is equal to f = (3*10^17nm/s)/550 nm

f is the real frequency, in this case, is (3*10^17nm/s)/650 nm

vs is the speed of the source, in this case, the source is not moving, then vs = 0 m/s.

v is the speed of the wave, in this case, is equal to the speed of light, v = 3*10^8 m/s

v0 is your speed, this is what we want to find.

Replacing those quantities in the equation, we get:

(3*10^17nm/s)/550 = (3*10^8 m/s + v0)/(3*10^8 m/s)*(3*10^17nm/s)/650 nm

(650nm)/(550nm) = (3*10^8 m/s + v0)/(3*10^8 m/s)

1.182*(3*10^8 m/s) = (3*10^8 m/s + v0)

1.182*(3*10^8 m/s) -  (3*10^8 m/s) = v0 = 54,600,000 m/s

So your speed was 54,600,000 m/s, which is a lot.

6 0
3 years ago
Why is the sky blue?
Levart [38]

Answer:

Gases and particles in Earth's atmosphere scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

7 0
3 years ago
A person suffering from anaemia gets tired​
avanturin [10]

Answer: yes.

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • The length of a retanle is twice the width plus 10. if the perimenter of the rectangle must be 200 inches what is the maimumarea
    14·1 answer
  • Jose’s lab instructor gives him a solution of sodium phosphate that is buffered to a pH of 4. Because of an error that he made w
    10·1 answer
  • A computer monitor accelerates electrons and directs them to the screen in order to create an image. If the accelerating plates
    8·1 answer
  • The part of the building structure, typically below grade, upon which all other construction is built is known as:________
    6·1 answer
  • Physics <br><br> I’ll give brainiest! :)
    7·2 answers
  • Approximately how many Sun's are in the Milky way?
    14·2 answers
  • A student in your class whom you kind-of like asks you come to watch a meteor shower. What exactly are you being invited to? a.
    8·1 answer
  • 2 QUESTIONS!! PLEASE HELP QUICK
    9·1 answer
  • A 1500 kg car traveling 5.0 m/s collides head on with a 3000 kg truck traveling
    14·1 answer
  • the force that gravitation exerts upon a body, equal to the mass of the body times the local acceleration of gravity
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!