Given: The energy equivalent of one gallon of gasoline is 1.3 x 10° J. A compact car has a mass of 907 kg, and its efficiency is rated at 16.7%. (That is, 16.7% of the input energy available is delivered to the wheels.) Find the amount of gasoline used to accel- erate the car from rest to 25.1 m/s. Answer in units of gal.

Given: The energy equivalent of one gallon of gasoline is 1.3 x 10° J. A compact car has a mass of 907 kg, and its efficiency is rated at 16.7%. (That is, 16.7% of the input energy available is delivered to the wheels.) Find the amount of gasoline used to accel- erate the car from rest to 25.1 m/s. Answer in units of gal.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 77P: A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift...

See similar textbooks

Similar questions

A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift the man?(b) If the man’s body is 25 efficient, how much power does he expend?
Compute the kinetic energy of an 1800 lb automobile traveling at 30 mi/hr, How many times as great is the kinetic energy if the velocity is doubled. Ans. Four times
Your brain consumes about 22 W of power,and avocados have been shown to promote brain health. If eachavocado contains 310 C, and your brain were powered entirelyby the energy from the avocados, how many must you eat eachday?
The work performed as a function of time for a certain process is given by: W = at³, where a = 2 J/s³. The instantaneous power output (measured in Watts) at t = 1 sec is: А. 24 В. 69 С. 54 D. 207 Е. 6
While running, a person dissipates about 0.60 J ofmechanical energy per step per kilogram of body mass. If a60. - kg person develops a power of 70. W during a race, how fastis the person running? (Assume a running step is 1.5 m long.)
I'm trying to solve this question, The record time for a Tour de France cyclist to ascend the 1100-mm-high Alpe d'Huez is 37.5 minmin. The rider and his bike had a mass of 65 kgkg. At the average speed of the ride, the metabolic power to ride on level ground would be 700 WW. To this, we must add the power to make the climb. What was his total metabolic power? I arrived at 1125W, but the answer is not right. How do I need to approach this problem?
A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic energy, in kJ (kiloJoules)? Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
Ex. 73 A wire 2.5 m long and diameter 0.8 mm is stretched by a load 10 N. Find the work done if Y is 2 x 1011N/m2.
A new coal-burning power plant can generate 1.9 gigawatts (billiori watts) of power. Burning 1 kilogram of coal yields about 447 kilowatt-hours of energy. Complete parts (a), (b), and (c) below. a. How much energy, in kilowatt-hours, can the plant generate each month? million kilowatt-hours of energy each month. The plant can generate (Type an integer.)
The batmobile of mass 856kg, traveling at 140.9km/h, brakes and comes to a stop. Calculate the work done on the batmobile in kilojoules. Do NOT include units in your answer. Round your answer to 2 decimal places. Do NOT change to scientific notation. Ignore significant figures.
A truck is carrying 1.35 tonne of calcium carbonate to a sugar industry located on top of the hill. Calculate the weight of truck, if it gains potential energy of 689kJ at half the way of its journey to 25m height hill. O 2.09 kl s?/m? O 0280 kl s?/m? O 5618.75 kg O 2809.37 kg
Q. a) whatis the energy required to walk 20km at 5 km/h ? From the table. the energy rate o walking activity at 5 Km/hr is 3.8 kc/min The energy vequived t wbik 20kwes,8 Ka/min X2km X 6o min Ar x 5Km/hr Energy-g1z kad