Posts by Roland

Total # Posts: 28

electron theory and ohm law
if the 5-ohm heater in problem 15 is placed with a 15-ohm heater, what current will the 15-ohm heater draw from the same power supply?

electron theory and ohms law
if the 5-ohm heater in problem 15 is placed with a 15-ohm heater, what current will the 15-ohm heater draw from the same power supply?

electron theory and ohms law
what voltage must be applied to a 6.4-ohm lamp filament to develop 20 amperes of current?

Physics
Calulate the acceleration of a 300,000kg jet on take when the thrust is equal to 120,000N. I used a = f/m to get 0.4m/s/s Tricky part. How long a runway is required for the plane to take off at a speed of 300km/h? Help?

chem
Thank you. That was a big help. My Dad is trying to help me but he's been out of college more then 30 years.

chem
A 5.2 litre baloon at 900 torr of pressure. If the temp is kept constant and the pressure is reduced to 200 torr what is the voume in the balloon? Is this a trick question? My instinct is to say the volume is the same, 5.2 litres.

Africa
I'm in grade 12 I want an advice about the subj that I chose maths lit,geography,life scinces,so which job I can take next year pls keep me up dated

Calculus
A company manufactures widgets. The daily marginal cost to produce x widgets is found to be C'(x) = 0.000009x^2 - 0.009x + 8 (measured in dollars per unit). The daily fixed costs are found to be $120. a. Use this information to get a general cost function for producing ...

Calculus
Part I The change in annual revenue in thousands of dollars for the Ozark Zip Line Corporation has been modeled by the function. R(x) = 8.2x^2 + 23.1x where x is the number of years after 2000. To find the total revenue gained between the years 2002 and 2005, start by choosing...

Calculus
Part I The change in annual revenue in thousands of dollars for the Ozark Zip Line Corporation has been modeled by the function. R(x) = 8.2x^2 + 23.1x where x is the number of years after 2000. To find the total revenue gained between the years 2002 and 2005, start by choosing...

Calculus
Part I The change in annual revenue in thousands of dollars for the Ozark Zip Line Corporation has been modeled by the function. R(x) = 8.2x^2 + 23.1x where x is the number of years after 2000. To find the total revenue gained between the years 2002 and 2005, start by choosing...

Cosmology
á less than −4

Physics
A rocket of total mass 3100 is traveling in outer space with a velocity of 120 . To alter its course by 40.0, its rockets can be fired briefly in a direction perpendicular to its original motion.

Statistics
find the standard deviation by substituting n= 147, p=0.13 and q=0.87

accounting
1,150,000 in cash. How long would it take them to accumulate $2,000,000 in cash? Assume an interest rate of 5 percent.

science
which of the following does not affect reaction rate balancin, temperature surface area or concentration?

math
how does a tally chart help you to display data?

math
if you spin the spinner 00 times will B be spun more times than A?

physics
4m/s

7th grade science
A car with a forward force of 2,000 newtons drives a distance of 20 kilometers in minutes. How much power does it have?

Algebra
-4 sqrt5 + 3 sqrt3

Science
why do we name lakes

Science
Why do we name rivers?

windows server 2003
**This question I don't understand**When you configure volume shadow copy, which of the following parameters cannot be configured?

windows server 2003
sorry for all the pots new to the site

windows server 2003
lol i have no idea

windows server 2003
**This question I don't understnad**If you do a full backup to a single tape on a Friday night and then an incremental backup to a single tape on all other days of the week (including the weekend), if a system failure occurs, what is the maximum number of tapes required to...

math
how do i find the precent. 12 of 170