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
olganol [36]
3 years ago
7

Calculate the potential energy in kJ of a human body (70 kg) possesses on top of the Empire State Building (1,250 ft tall).

Engineering
1 answer:
Dvinal [7]3 years ago
4 0

Answer:

Potential energy = 261.633 kJ

Explanation:

The potential energy is the energy stored in an object due to its position above Earth's surface.

The potential energy formula is :

E_{p} =m.g.h

Where E_{p} is the potential energy

m is the object mass

g is the gravity

and h is the height referred to a comparison plane

We start by converting the height in feets to meters

h=1250ft=1250ft.\frac{0.3048m}{1ft} =381m\\h=381m

m=70kg

and

g=9.81\frac{m}{s^{2} }

E_{p} =(70kg).(9.81\frac{m}{s^{2} } )(381m)=261632.7 kg.\frac{m}{s^{2} } .m

Where

kg.\frac{m}{s^{2} } =N

N is Newton

N.m=J

J is Joule. Joule is the energy unit

E_{p} =261632.7 J

We divide it by 1000 to obtain kJ

261632.7 \frac{J}{1000} =261.633 kJ

You might be interested in
Which of the following is a possible unit of ultimate tensile strength?
levacccp [35]

Answer:

Newton per square meter (N/m2)

Explanation:

Required

Unit of ultimate tensile strength

Ultimate tensile strength (U) is calculated using:

U = \frac{Ultimate\ Force}{Area}

The units of force is N (Newton) and the unit of Area is m^2

So, we have:

U = \frac{N}{m^2}

or

U = N/m^2

<em>Hence: (c) is correct</em>

4 0
3 years ago
Counter argument for why engineers dont make a positive change in the world.​
egoroff_w [7]

Answer:

They don't make a positive change in the world because they have made mistakes that aren't able to be made fixed and there are a lot of engineers who haven't study enough and know the important basis of coming to engineer.

3 0
3 years ago
What are the three elementary parts of a vibrating system?
zhenek [66]

Answer:

the three part are mass, spring, damping

Explanation:

vibrating system consist of three elementary system namely

1) Mass - it is a rigid body due to which system experience vibration and kinetic energy due to vibration is directly proportional to velocity of the body.

2) Spring -  the part that has elasticity and help to hold mass

3) Damping - this part considered to have zero mass and  zero elasticity.

7 0
3 years ago
A highway reconstruction project is being undertaken to reduce crash rates. The reconstruction involves a major realignment of t
CaHeK987 [17]

Answer:

The provided length of the vertical curve is satisfactory for the reconstruction design speed of 60 mi/h

Explanation:

The explanation is shown on the first uploaded image

8 0
3 years ago
6.48 programming project 1: encode/decode tic -tac-toe
natita [175]

Answer:

What do you need help with?

Explanation:

5 0
3 years ago
Other questions:
  • A steady‐flow gas furnace supplies hot air at a rate of 850 cfm and conditions of 120F and 1.00 atm. The air splits into two bra
    14·1 answer
  • In details and step-by-step, show how you apply the Bubble Sort algorithm on the following list of values. Your answer should sh
    15·1 answer
  • *6–24. The beam is used to support a dead load of 400 lb&gt;ft, a live load of 2 k&gt;ft, and a concentrated live load of 8 k. D
    13·1 answer
  • An actual vapour compression system comprises following process represents a. 1-2 Compression process b. 2-3 Condens 1 (or heat
    5·1 answer
  • 29
    6·1 answer
  • When welding stick (SMAW) what is the distance between top of bare end of electrode and base metal?
    7·1 answer
  • A motor cycle is moving up an incline of 1 in 30 at a speed of 80 km/h,and then suddenly the engine shuts down.The tractive resi
    11·1 answer
  • In a movie theater in winter, 510 people, each generation sensible heat at a rate of 80 W, are watching a movie. The heat losses
    11·1 answer
  • La iluminación de la superficie de un patio amplio es 1600 lx cuando el ángulo de elevación del sol 53°. Calcular la iluminación
    15·1 answer
  • Shane's 100-watt radio draws 7 amps of current on a 120-volt circuit. What is the resistance in the radio?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!