Recent content by dymand68

thank you, fwiw-the source is ATI, Assessment Technologies Institute, LLC Test of Essential Academic Skills Pre-Test Study Manual, edition 3.0

the total given example: (3.5709*10^5)+(5.789*10^4) =(35.709*10^4)+(5.789*10^4) =(35.709 + 5.789)(10^4 + 10^4) =41.498 * 10^4 =4.1498*10^5

Homework Statement (35.709 + 5.789)(10^4 + 10^4) =41.498 * 10^4 Homework Equations this is an an example given in my TEAS (standardized skills test) work book/study guide...is it accurate? i don't know why (10^4 + 10^4) = 10^4 after the simplification The Attempt at a Solution

the correct answer is 17 ohms...double width, 1/2 length =1/4 resistance?

Homework Statement Magnet A has twice the magnetic field strength of magnet B and at a certain distance pulls on magnet B with a force of 55 N. With how much force, then, does magnet B pull on magnet A? Homework Equations unknown The Attempt at a Solution unknown

inverse square rule?

Homework Statement A 1 mile long copper wire has a resistance of 68 ohms. What will be its new resistance when doubling it over and using it as "one" wire Homework Equations? R=V/current The Attempt at a Solution unable to attempt, I know that when it is cut in half R=34 ohms

Homework Statement Two point charges are separated by 5 cm. The attractive force between them is 16 N. If the two charges attracting each other have equal magnitude, what is the magnitude of each charge? Enter a number. Coulombs Homework Equations Force =k*(q1*q2/d^2) The...

thank you, that was marked correct

Homework Statement can a super-fast fish that is able to swim faster than the speed of sound in water produce a "sonic boom"? Homework Equations unknown The Attempt at a Solution there is a speed of sound in water- roughly 4x that of air?

[b]1. Homework Statement : Molecules in the combustion chamber of a rocket engine are in a high state of random motion. When the molecules leave through a nozzle in a more ordered state, will their temperature be more, less, or the same as their temperature in the chamber before being exhausted...

[b]1. Homework Statement : A power station with an efficiency of 0.3 generates 10^8 W of electric power and dissipates 2.33 multiplied by 10^8 W of thermal energy to the cooling water that flows through it. Knowing the specific heat of water in SI units is 4184 J/kg°C, calculate how many...

Homework Statement A container of hot water at 80°C cools to 79°C in 15 seconds when it is placed in a room that is at 20°C. Use Newton's law of cooling to estimate the time it will take for the container to cool from 70°C to 69°C. And still later, from 30°C to 29°C. Homework Equations...

Homework Statement Suppose the 1.3 km main span of steel for the Golden Gate Bridge had no expansion joints. How much longer would it be for an increase in temperature of 20°C? Homework Equations change in Length=Length*coefficient linear expansion*change in temp. =1300*(11*10^-6/20)*20 The...

according to Paul G. Hewitt, via webassign.net; the solution is: volume = 79 kg*.21/1.2 kg/m^3= 13.825 m^3 no consideration of helium density and air density is considered 1.2