Sushmitha

This page lists questions and answers that were posted by visitors named Sushmitha.

Questions

The following questions were asked by visitors named Sushmitha.

1)If I am to plot a graph of Force in Newtons vs. Stretch in meters, would the x axis be force or the stretch? 2) The data table has 3 columns: force in Newtons, position in m and displacement in m. Which one is used to plot the Stretch in meters? the pos...

14 years ago

use an inverse trig function to write theta as a function of x (There is a right triangle drawn. The hypotenuse is 2. Theta is the angle between the base and the hypotenuse. The base/adjacent side of theta is labeled(x + 1) The side opposite theta does no...

14 years ago

I need help with two questions: 1) An object can only have a charge that is an integral multiple of the charge on the ___. Am I correct with "electron" as the answer? or possibly elementary charge? 2) The difference in potential between any two points in...

14 years ago

Electric power is found by multiplying ___ by current. volts? potential difference? The kilowatt hour is a unit for measuring ___. energy or electrical energy Thanks

14 years ago

Three identical resistors are connected in series to a battery. The voltage drop across one of the resistors is ___ times the voltage of the source.

14 years ago

if three resistances in parallel circuit are all equal, the total resistance is ___ the resistance of any on branch.

14 years ago

Assume r and s are the roots of the quadratic equation ax^2 + bx + c = 0, show that r + s = -b/a and rs = c/a.

14 years ago

cannon fired ffrom top of 50 ft hill. height of shell above water: h = -0.0000167x^2 + 0.23x + 50 where x is horizontal distance from the foot of the hill to a point directly under the shell. How high does the shell go, and how far away does it hit the wa...

14 years ago

open box made from 33 x 33 inch sheet of metal by cutting out x-inch square from each corner and folding up the sides. What size square should be cut out to produce a box of maximum volume? (This is algebra class)

14 years ago

solve system of equations: y = 2x^3 - 2x^2 y = -6x^2 +30x I know (0,0) is one point. How do I get others?

14 years ago

A thermometer reading 7 degrees C is brought into a room with a constant temperature of 29 degrees C. If the thermometer reads 15 degrees C after 4 minutes, what will it read in 6 minutes? 11 minutes?

13 years ago

5^(-x+3) = 64 I have only had exponents to the x, not with +3 too.

13 years ago

A diagram has vector A at 30 degrees above the positive x axis. length = 3 m Vector B is ON the negative x-axis. length = 1 m Vector C is ON the negative y-axis. Length is 2 m What is the direction in degrees of vector a + vector B + vector C?

13 years ago

What is the tip speed (ft/min) of a 21 inch long rotary lawn mower blade that is connected to the output shaft of an engine operating at 3400 rpm? What are the steps to figure this out?

13 years ago

The 7 inch diameter drive drum of a belt conveyor is turning at 130 rpm. What is the belt speed (ft/min) if there is no slip between the belt and drum?

13 years ago

In the redox reaction: 2FeS + 4.5 O(subscript 2)+ 2H(subscript 2)O > Fe(subscript 2)O(subscript 3) + 2H(subscript 2)SO(subscript 4) Fe is oxidized or reduced (select one) from ___ to ___. S is oxidized or reduced (select one) from ___ to ___.

12 years ago

Dr. Bob222, Please see my additional posts on Jan 20 at 2:26pm and Jan 21 at 12:33 am. This is in reference to the redox reactions: 1) Fe goes from +2 to +3, and S goes from -2 to +6. They both appear to be oxidized because they increased. Is it possible...

12 years ago

Can two elements both be oxidized in a reaction? 2FeS + 4.5O2 +2H2O==> Fe2O3 + 2H2SO4 I see Fe is oxidized, going from Fe+2 to Fe+3 However, Isn't S going from S-2 to S+6? making sulfur ixidized too, and not reduced?

12 years ago

Your grandmother opened an investment account of $1,000(initial deposit) 15 years ago. Today it's worth $39,533.32 What is average annual rate of return that she earned? Thank you.

11 years ago

Answers

The following answers were posted by visitors named Sushmitha.

so how do i find the max volume?

14 years ago

OK, I got it.

14 years ago

Still lost. I put in 6 and lost a variable. T(6) = 29 - (29 - 7) e^-0.678 29 - 22e^-0.678 -29 = -22e^-0.678 ln 1.318181818 = e^-0.678 0.276253377 = -0.678

13 years ago

DrBob222, I understand that oxidation is a loss, but appears as an increase. I still have two questions. 1) Fe goes from +2 to +3, and S goes from -2 to +6. They both appear to be oxidized because they increased. Please explain. 2)I think my problem is th...

12 years ago

Dr. Bob222, Ok, I'm starting to see how to get the oxidation numbers. However, since S goes from -2 to+6, does it also oxidize? is it possible that both can oxidize? I thought one oxidized while the other reduced.

12 years ago