7. Compare the energy needed to move 20 people 10km with 5 cars of 4 people with...

Fantastic news! We've Found the answer you've been seeking!

Question:

7. Compare the energy needed to move 20 people 10km with 5 cars of 4 people with 3 stops at a speed of 70km / h.

With a bus that stops every 2000m and only reaches a speed of 45 km / h.

Both engines have an efficiency of 30%, the car with 4 people weighs 1.4 tons, the bus 12.5 tons (including 20 people).

c_dA = 0.8m2 for the car and the bus is 3.2m high and 2.5m wide and has an air resistance coefficient of 0.5.

Related Book For answer-question

The Physical Universe

ISBN: 978-0077862619

16th edition

Authors: Konrad B Krauskopf, Arthur Beiser

See More Books

Posted Date: Jun 25, 2020 12:42 PM

See More Questions

(a) Calculate the energy needed to compress three carbon-carbon single bonds and stretch three carbon-carbon double bonds to the benzene bond length 1.397 . Assume a harmonicoscillator...
The energy needed to remove an outer electron from an atom is called the atoms ionization energy. (a) Use Fig. 9-29 to find the ionization energy in eV of lithium (atomic number 3) on the basis that...
(a) Compare the energy needed for the first reaction of the carbon cycle to that for a deuterium-tritium reaction (Example 31-9). (b) If a deuterium-tritium reaction requires T 3 X 108 K, estimate...
The comparative balance sheet of Beets Industries, Inc. at December 31, 2013 and 2012, is as follows: An examination of the income statement and the accounting records revealed the following...
Rita Meyers had been a supervisor of five research specialists in her company's marketing department for nearly two years. She had been promoted to the position after working as an employee in...
This year, Sigma Inc. generated $612,000 income from its routine business operations. In addition, the corporation sold the following assets, all of which were held for more than 12 months. a....
Gender in the Rock and Roll Hall of Fame From its founding through 2015, the Rock and Roll Hall of Fame has inducted 303 groups or individuals. Forty-seven of the inductees have been female or have...
Apocalyptica Corp. pays a constant $8.50 dividend on its stock. The company will maintain this dividend for the next 11 years and will then cease paying dividends forever. If the required return on...
7 Find the derivative of f (w) = w8+ 7w. What is the domain of f' (w)? Enclose numerators and denominators in parentheses. For example (a - b)/ (1 + n). Enter the domain in interval notation. For o,...
What other countries in addition to the united states utilize the restorative justice model? What are the social and ethical implications of utilizing restorative justice practices on a global level?
Discuss the checklist of audit financial statements starting from the period of the date of the financial statement and running through the completion of the audit.
What are comprehensive community-based delinquency prevention programs?
Prevention and control are the two broad-based approaches that can be used to reduce delinquency. How do these approaches differ?
Are you familiar with any instances of retrospective reading in your home town? Have you ever engaged in it yourself, saying, I always knew he had problems?
Is widening the net a real danger, or are treatmentoriented programs simply a method of helping troubled youths?
What factors precipitated the development of the Illinois Juvenile Court Act of 1899?
1.Why is a brand's positioning strategy crucial to the formulation of the brand's marketing strategy? 2. Brand positioning is about establishing how the marketer wants the brand to be perceived by...
$10,000 was borrowed at 3.5% on July 17. The borrower repaid $5000 on August 12, and $2000 on September 18. What final payment is required on November 12 to fully repay the loan?
The rate at which an object emits electromagnetic energy does not depend on its a. surface area b. mass c. temperature d. ability to absorb radiation
The dinosaurs were which one or more of the following? a. Reptiles b. Primitive mammals c. All carnivorous d. Still living when early humans appeared
A hydrogen molecule consists of two hydrogen atoms whose nuclei are single protons. Find the force between the two protons in a hydrogen molecule whose distance apart is 7.42 10 11 m. (The two...
Light of a single wavelength is incident on a diffraction grating with $500 \mathrm{slits} / \mathrm{mm}$. Several bright fringes are observed on a screen behind the grating, including one at...
A miniature spectrometer used for chemical analysis has a diffraction grating with 800 slits $/ \mathrm{mm}$ set $25.0 \mathrm{~mm}$ in front of the detector "screen." The detector can barely...
A laboratory dish, $20 \mathrm{~cm}$ in diameter, is half filled with V. water. One at a time, $0.50 \mu \mathrm{L}$ drops of oil from a micropipette are dropped onto the surface of the water,...

7. Compare the energy needed to move 20 people 10km with 5 cars of 4 people with...

Question:

Expert Answer:

Solution ... View the full answer

The Physical Universe

Students also viewed these mechanical engineering questions