Answer:
A roller coaster does not have an engine to generate energy. This builds up a supply of potential energy that will be used to go down the hill as the train is pulled by gravity. Then all of that stored energy is released as kinetic energy which is what will get the train to go up the next hill.
Explanation:
Answer:
Re=100,000⇒Q=275.25 
Re=500,000⇒Q=1,757.77
Re=1,000,000⇒Q=3060.36 
Explanation:
Given:
For air
=25°C ,V=8 m/s
For surface
=179°C
L=2.75 m ,b=3 m
We know that for flat plate
⇒Laminar flow
⇒Turbulent flow
<u> Take Re=100,000:</u>
So this is case of laminar flow

From standard air property table at 25°C
Pr= is 0.71 ,K=26.24
So 
Nu=187.32 (
)
187.32=
⇒h=1.78
heat transfer rate =h
=275.25 
<u> Take Re=500,000:</u>
So this is case of turbulent flow


Nu=1196.18 ⇒h=11.14 
heat transfer rate =h
=11.14(179-25)
= 1,757.77
<u> Take Re=1,000,000:</u>
So this is case of turbulent flow


Nu=2082.6 ⇒h=19.87 
heat transfer rate =h
=19.87(179-25)
= 3060.36 
Answer:
They include PCBs, dioxins, furans, hexachlorobenzene, benzo(a)pyrene (one of many polyaromatic hydrocarbons or PAHs), lead and mercury compounds and pesticides (toxaphene, mirex, aldrin/dieldrin, DDT). 3 Great Lakes Water Quality Agreement Work Group Report on Chemicals of Emerging Concern, August 2009.
Answer:
yes.
Explanation:
because all websites use coding
Answer:
Technician A
Explanation:
The Battery Council International (BCI) battery group numbers is an industry standard for batteries that indicate two important this;
- Physical size of a car battery which are; height , width and length.
- Polarity on the battery which is the location of the positive and negative battery posts
For example : a group 24 battery or a type 27 marine battery are battery group numbers that define the physical dimensions of a battery case. These numbers are important because car owners and manufacturers use the numbers <em>to match vehicle power requirements with the alternators </em>.A mismatch of the battery and the alternator can cause the vehicle's alternator to overheat leading to a short life span.
<u>Technician A statement is correct.</u>