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
LuckyWell [14K]
2 years ago
10

PLEASE HELP!!!

Physics
1 answer:
anzhelika [568]2 years ago
7 0

The net force that is applied to the passenger during the elevator acceleration is 218.75 N.

<h3>What is net force?</h3>

This is the single force obtained from the combinatiion of two or more forces

To calculate the net force that is applied to the passenger during the elevator's acceleration, we use the formula below.

Formula:

  • F = m(v-u)/t............ Equation 1

Where:

  • F = force
  • m = mass
  • v = Final velocity
  • u = initial velocity
  • t = time.

From the question,

Given:

  • m = 70 kg
  • u = 0 m/s
  • v = 12.5 m/s
  • t = 4 s

Substitute these values into equation 1

  • F = 70(12.5-0)/4
  • F = 218.75 N

Hence, The net force that is applied to the passenger during the elevator acceleration is 218.75 N.

Learn more about net force here: brainly.com/question/13370981

You might be interested in
a uniform disc and hollow right circular cone have the same formula for their moment of inertia when rotating about the central
Romashka-Z-Leto [24]

Answer:

This is as a result that about the central axis a collapsed hollow cone is equivalent to a uniform disc

Explanation:

The integration of the differential mass of the hollow right circular cone yields

I=\int\limits   dmr^2 = \int\limits^a_b {\frac{2Mxr^2}{R^2 +H^2} } \, dx  = \frac{2MR^2dx}{(R^2 +H^2)^2} \frac{(R^2 +H^2)^2}{4} = \frac{1}{2}MR^2

and for a uniform disc

I = 1/2πρtr⁴ = 1/2Mr².

6 0
3 years ago
PLZ help this should be super easy
Ugo [173]
The answer is number (3) if am wrong am sry
4 0
3 years ago
Read 2 more answers
A parallel-plate capacitor has area A and plate separation d, and it is charged to voltage V. Use the formulas from the problem
Shtirlitz [24]

Answer:

U = (ε0AV^2) / 2d

Explanation:

Where C= capacitance of the capacitor

ε0= permittivity of free space

A= cross sectional area of plates

d= distance between the plates

V= potential difference

First, the capacitance of a capacitor is obtained by:

C = ε0A/d.

Starting at the formula , U= (CV^2)/2. Formula for energy stored in a capacitor

Substitute in for C:

U = (ε0A/d) * V^2 / 2

Hence:

U = (ε0AV^2) / 2d

3 0
3 years ago
A 72-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops through a height of 1.61 m,
chubhunter [2.5K]

Answer:

2849.98 J

Explanation:

From the question,

Work done by the boy = change Potential energy of the boy + change in kinetic energy of the boy

W = ΔP + ΔK..................... Equation 1

Where W = work done by the boy, ΔP = change in potential energy of the boy, ΔK = Change in kinetic energy of the boy.

But,

ΔP = mgΔh.................... Equation 2

ΔK = 1/2mΔv²................. Equation 3

Where m = mass of the boy, Δh = change in height of the boy, Δv = change in velocity of the boy.

Substitute equation 2 and 3 into equation 1

W = mgΔh+1/2mΔv²................. Equation 4

Given: m = 72 kg, Δh = 1.61 m, Δv = 8.5-1.6 = 6.9 m/s, g = 9.8 m/s²

Substitute into equation 4

W = 72(9.8)(1.61)+1/2(72)(6.9²)

W = 1136.016+1713.96

W = 2849.98 J

8 0
3 years ago
1. How does the structure of a hard-boiled egg compare to the crust, mantle, and core structure of Earth? What do the egg's laye
lutik1710 [3]

Answer:

2. Earth layers compare in egg layer it is hard on the outside

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Your friends tell you that all heavy objects sink in water. Do you agree or disagree? Explain your answer in terms of buoyant fo
    13·2 answers
  • A dog runs with an initial speed if 7.5m/s on a waxed floor. it slides to a stop in 15 seconds. What is the acceleration ​
    6·1 answer
  • The siren on an ambulance is emitting a sound whose frequency is 2450 Hz. The speed of sound is 343 m/s. If the ambulance is sta
    12·2 answers
  • Which best describes the beginning of the Big Bang Theory?
    13·2 answers
  • Objects with greater mass have a weaker force of gravity between them.<br><br> True<br> False
    12·1 answer
  • How do astronomers use rocks from the moon to estimate the age of the solar system?
    6·1 answer
  • An increase in the transparency of earths atmosphere is often caused by
    11·2 answers
  • Explain the importance of wearing your seatbelt using Newton’s laws and motion
    11·1 answer
  • Is a person believes that dreams have hidden meaning how or she would agree with Freud's ideas about _ content?
    5·2 answers
  • A box is pushed horizontally with constant speed across a rough horizontal surface.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!