Tagged Questions
-1
votes
1answer
48 views
Convert units from cal cm^-1 day^-1. to Wm-2
I am trying to calculate the energy budget of a water body and the last term I'm trying to calculate is the energy advected from the water body ($Q_v$). This equation is given by:
$Q_v = V ( (T_1 - ...
0
votes
1answer
45 views
Rotation System Dynamics - Unit conversion issues
I'm having issues with unit conversions when for rotational systems. All of my components (spring, mass, damper) come in Imperial units, so I did all my calculations in Imperial. When I convert to ...
0
votes
0answers
26 views
Direct Normal Insolation
I need a help please.I'm struggling to know how to convert from KWh/m2/day to a flux unit.
For example, if I have a Direct Normal Insolation (DNI) that is equal to 7.41 KWh/m2/day, how can I convert ...
0
votes
1answer
65 views
I need some help trying to convert the specific fuel consumption from imperial to metric units
Ok the imperial unit for the specific fuel consumption for a jet aircraft is shown below. Its the amount of fuel (in lbs) per hour required to produce 1 pound of thrust.
$$\frac{\frac{lbs}{h}}{lbs}$$
...
0
votes
1answer
169 views
CGS Units to SI Units
This may be a stupid question but I am having trouble getting the same result in CGS units as I would if I used SI units for a unitless calculation.
I have to calculate $E_c=\frac{m_e c\, ...
2
votes
6answers
345 views
Confused about unit of kilowatt hours
So I am a little confused on how to deal with the Kilowatt hours unit of power, I have only ever used Kilowatts and I have to design a residential fuel cell used as a backup generator for one day.
...
0
votes
0answers
64 views
Converting $q/m_e$ to $C/kg$ [closed]
I was doing some chemistry problems when I came across a question asking to find the charge to mass ratio of an electron in $q/m_e$. Then, it told me to compare what I found to the accepted value, at ...
3
votes
1answer
106 views
Help on unit conversion problem
This is a problem from school. I will show my attempt.
The question:
"The gas constant for dry air R is 287 $\frac{m^2}{s^2*K}$. Assuming the temperature is 330 K and the pressure is 1050 hPa, what ...
0
votes
1answer
80 views
Is this a correct addition to a pipe friction loss calculation?
I've been using this online calculator to work out the difference in pressure and flow between two ends of a pipe:
Pipe Friction Calculation for Fluid Flow in a Pipe
So far most of it makes sense, ...
0
votes
1answer
434 views
Question Based On Units And Measurements Involving Lengths [duplicate]
The below is the sixth question of the very first chapter from halliday and resnicks fundamentals of physics text,which i'am not able to comprehend.
Harward Bridge,which connects MIT with its ...
0
votes
2answers
690 views
static friction problem without mass
I am having trouble with a physics problem. The problem is as follows:
A car is traveling at 54.0 mi/h on a horizontal highway.
A) If the coefficient of static friction between road and tires on a ...
0
votes
1answer
335 views
if a force is 1 newton metre, what is it at 2 meters?
If I have a force, say 24 kg/cm what would that equate to at 2cm? I would like to know the formulae for calculating this.
For example. If a motor can hold an object of 24kg at 1cm from its pivot ...
-1
votes
3answers
271 views
Help getting the distance an object has moved
What is a distance an object went through at the speed of 14hm/min for 6 hours?
I am having problems with conversions.
First, I tried passing 14hm/min to m/s. I did it alright. But now I am unsure. ...
1
vote
3answers
570 views
Unit conversion help (school)
Can someone please help me explaining how to convert units in problems like the one below? I've done many things, but I am very unsure of all my methods. Could you tell me what steps should I take?
...
