Recent content by jle1092

Two fixed charges, 3.0 uC and 5.0 uC, are 0.40 m apart. The 3.0 uC is to the left of the 5.0 uC charge. Where should a third charge of 2.0 uC be placed to put the system of three charges in electrostatic equilibrium? The answer should be measured with respect to the 5.0 uC charge. What...

Question involving the voltage when batteries are connected in different ways? What is the voltage across six 1.5 V batteries when they are connected a) in series b) in parallel, c) three in parallel with one another and this combination wired in series with the remaining three? I'm not sure...

Water is boiled to add moisture to the air in the winter to help a congested person breathe better. Calculate the heat required to boil away .75 L of water that is initially 60 C. I'm not sure what equation to use, I was thinking Q=mc(change in temp.) where Q= heat energy m= mass...

A rectangular fish tank measuring .75 x .50 m is filled with water to a height of 65 cm. What is the gauge pressure on the bottom of the tank? So I'm pretty sure I use the equation P=densityxgravityxheight I know gravity is 9.8, but I'm not sure what height I should use considering it is...

Thank you for the help! :)

So, shouldn't the answer to the third one be 16? Because: PEi + KEi = PEf + KEf 0 + 16 = PEf + KEf So it doesn't really matter what PEf and KEf are because they equal 16 combined, by the conservation of mechanical energy law?

So would I set up the equation to : KEi= (1\2mv^2) + PEf ? If so, what do I use for PEf so that I can solve the equation?

A .5 kg ball is thrown vertically upward with an initial speed of 8 m/s. If the initial potential energy is taken as zero, find the following: 1. potential energy of the ball at a height of 2 m above the initial position 2. the initial kinetic energy of the ball 3. the total mechanical...

A brick hits a glass window. The brick breaks the glass, so: is the magnitude of the force of the brick, greater, less than, or equal to the magnitude of the force of the window? Newton's third law of motion states that for every action, there is an equal an opposite reaction. With this...

The speed limit in a school zone is 40 km/hr. A driver traveling at this speed sees a child run into the road 13 m ahead of the car. He put on his breaks and decelerates at a rate of 8.0 m/s^2. If the drivers reaction time is .25 s, will the car stop before hitting the child? a= - 8.0...

The density of a certain type of plastic is 0.75 g/cm^3. If a sheet of this plastic is 10.0 m long, 1.0 m wide, and 1 cm thick, what is its mass? Density= m\V V= l x w x h Rearranged the equation so that M = DV m=(.75 g/cm^3)(100,000 cm^3) and got m=75,000 g or 7.5 x 10^4 g...

If a cubic box(all sides the same length) has a volume of 1.0 L, what is the length of each side of the box? (L= Liter) V= l x w x h or in the problem V=s^2 So I did: 1.0 L^(1\3) = s^3(^1\3) so I got each side to = .33 What I am confused about is what unit is normally...

How many cubic meters are in 5.43 x 10^6 cm^3? There are .001 meters in the centimeter. m= meter cm= centimeter This is what I did: 5.43 x 10^6 cm^3 (.01m/1 cm)^3 And then did the calculations, which gave me: .0000043 x 10^6 m^3 or 4.3 m^3. Not sure if I set up the...