# Physics

In the design of a passenger bus, it is proposed to derive the motive power
from the energy stored in a flywheel. The flywheel, which has a moment of
inertia of 4.0 x 102 kgm2, is accelerated to its maximum rate of rotation of 3.0 x
103 revolutions per minute by electric motors at stations along the bus route.
a) Calculate the maximum kinetic energy that can be stored in the flywheel.
b) If, at an average speed of 36 kilometres per hour, the power required by the
bus is 20 kW, what will be the maximum possible distance between stations
on the level?

1. 👍
2. 👎
3. 👁

## Similar Questions

1. ### Physics

Three designs are proposed for an engine that is to operate between 500 and 300 K. Design A is claimed to produce 750 J of work per kilojoule of heat input, B is claimed to produce 500 J, and C is claimed to produce 250J. Which

2. ### physics

A passenger on an interplanetary express bus traveling at = 0.95 takes a 9.0-minute catnap, according to her watch.How long does her catnap from the vantage point of a fixed planet last?

3. ### Physical Science

Suppose you are traveling in a bus at highway speed on a nice summer day and the momentum of an unlucky bug is suddenly changed as it splatters onto the from window. a. Compared to the force that acts on the bug, how much force

4. ### math

a bus ride costs \$1.50. A 30-day bus pass costs \$36. Write an equation to represent the number of bus rides you would need to take for the bus pass to a better deal.

1. ### math

The London Eye is a large ferris wheel. Each sealed and air-conditioned passenger capsule holds about 25 passengers. The diameter of the wheel is 135 m, and the wheel takes about half an hour to complete one revolution. a)

2. ### Physics

In a city with an air-pollution problem, a bus has no combustion engine. It runs on energy drawn from a large, rapidly rotating flywheel under the floor of the bus. The flywheel is spun up to its maximum rotation rate of 5150

3. ### Physics

A 60kg front seat passenger in a car moving initially with a speed of 18m/s (40 MPH) is brought to rest by an air bag in a time of 0.4s a. What is the impulse acting on the passenger? b.What is the average force acting on the

4. ### History

Which best describes the ideas of government found in the Declaration of Independence? governments are created by people, they derive their powers from the consent of those being governed governments derive their power from God,

1. ### Physics Help!!

A passenger on an interplanetary express bus traveling at v = 0.94c takes a seven-minute catnap by his watch. How long does the nap last from your vantage point on a fixed planet?

2. ### English

1. He was late because he missed the bus. [In this sentence, what does 'the bus' mean? Does the bus mean the specific bus? The school bus which his schoool has, or the Number 12 bus which he usualy takes when he comes to school?

3. ### Algebra 2 Sine Function

A power outage occurs 6 min after the ride started passengers must wait for their cage to be manually cranked into the lowest position in order to exit the ride. Sine function model: 82.5 sin 3 pi (t+0.5)+97.5 where h is the

4. ### math

An elementary school bus comes at 8:15 am every morning to pick up children in a neighborhood. The probability that the bus will be late is 0.19 and the probability that the bus will be early is 0.02. What is the probability that