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
Pie
2 years ago
10

A 66-kg fellow stands on a digital scale in an elevator that accelerates upwards from rest to 4.5 m/s in 2.00 s. show answer Inc

orrect Answer Calculate the scale reading, in newtons, during this process (The scale exerts an upward force on him equal to its reading.)
Physics
1 answer:
Nina [5.8K]2 years ago
7 0

Answer:

Explanation:

mass of the fellow ( m ) = 66kg

acceleration of fellow a

v = u + at

4.5 = 0 + a x 2

a = 4.5 /2

= 2.25 m / s²

Net force acting on fellow in upward direction by the surface of  elevator

R - mg where R is reaction force of the surface of the elevator

Applying Newton's law of motion

R - mg = ma

R = m (g +a )

= 66 x ( 9.8 + 2 )

= 778.8 N

This will be the scale reading .

You might be interested in
For the equilibrium reaction N2O4(g) ⇀↽ 2 NO2(g) taking place inside a sealed container fitted with a piston, predict the effect
Butoxors [25]

Answer:

4. The equilibrium will shift to favor formation of NO2(g)

Explanation:

According to La Chatalier's Principle which states that when an equilibrium system undergoes changes either in temperature, volume or concentration; there will be in a change in the system in order to reach equilibrium.

From the above equation,

N2O4(g) ⇀↽ 2 NO2(g)

From the above reaction, there are 2 moles of gaseous product on the left and 1 mole of gaseous reactant.

Therefore, there are more moles of gases in the left hand side than the right hand side.

Because a decrease in volume favors the direction that produces fewer moles, an increase in volume will therefore shift this system towards the side with more moles of gases that is, more products are formed hence, this system will shift to right and produce more moles of products i.e more NO2(g) formed.

6 0
2 years ago
Solve the equation 3x^2+8x+5=0
Pachacha [2.7K]
3x^2+8x+5=0\\
3x^2+3x+5x+5=0\\
3x(x+1)+5(x+1)=0\\
(3x+5)(x+1)=0\\
x=-\dfrac{5}{3} \vee x=-1
4 0
3 years ago
A rod of length L and electrical resistance R moves through a constant uniform magnetic field ; both the magnetic field and the
CaHeK987 [17]

Answer:

don't know what class are you you are using which mobile or laptop

6 0
2 years ago
A student completed a lab report. Which correctly describes the difference between the "Question" and "Hypothesis" sections
galben [10]

Answer:

the second one!

Explanation:

the question is well, the question, a hypothesis is an educated guess on what you think will be the outcome

4 0
3 years ago
Read 2 more answers
If the potential difference across a 12-ohm resistor is 6 volts, the current through the resistor is?
larisa86 [58]
Current is inversely proportional to the resistance of the resistor and directly to the potential difference across it.

I = V/R = 6/12 = 0.5 A
4 0
3 years ago
Other questions:
  • Magma is classified as basaltic and andesitic or rhyolitic based on my factor
    7·1 answer
  • How does the kinetic energy of an object affect the speed of an object?
    10·1 answer
  • The thermal conductivity of a cement is 0.168 British thermal units per foot hour degree Fahrenheit ​[BTU divided by (ft h Super
    15·1 answer
  • Which of the following is not used to measure wind?
    13·2 answers
  • The atmosphere and oceans are in constant motion. This is because _____.
    7·2 answers
  • A box falls off of a tailgate and slides along the street for a distance of 62.5 m. Friction slows the box at –5.0 m/s2. At what
    8·1 answer
  • Several large firecrackers are inserted into the holes of a bowling ball, and the 6.3 kg ball is then launched into the air with
    5·1 answer
  • What are real life situations that apply Newton's second law of motion
    12·1 answer
  • Find the moment of force of 60 Newton about an axis of rotation at distance 20 cm from the force​
    7·1 answer
  • How does eating food produced locally benefit the environment?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!