Homework Statement
Two points charges A(+10. uC) and b(+40.0 uC) are placed .2 m apart forming line ab. Calculate the force experienced by a point charge C(+10.0 uC) placed on line Ab, .06 m from A
Homework Equations
F=kq1q2/d^2
The Attempt at a Solution
First I tried making a diagram...
Homework Statement
What should happen to the electrons in a insulated metal object when a negatively charged plastic rod is brought near the insulated metal
The Attempt at a Solution
I thought the electrons will repel each other and the insulated object will move away from the rod...
Homework Statement
Modern nuclear power plants have an overall efficiency of about 30%. Fossil fuel plants achieve overall efficiencies of 40%. Compare the rate of heat emission from a nuclear plant with that from a fossil fuel plant each of which produces an output power of 1000 MW...
Lol but I want to learn how to do the steps can u please show me them it's bothering me that I can't solve this physics heat engine problem pleaaaaaaaaaaase
Homework Statement
When gasoline(density=.7297 g/cm^3) is burned, it gives off 5.00 times 10^4 J/g(its heat of combustion). If a car's engine is 25% efficient, how much gasoline per hour must it burn in order to develop an output of 50.0hp. 1hp=746 W
Homework Equations
P=W/t
e=W/Qh...
Homework Statement
I just want to know when do I use the formula for COP refrigerator vs COP Heat pump. If the heat is absorbing something then what formula do I use
Homework Equations
[b]3. The Attempt at a Solution [/b}
Uh I just trying 2 figure out the concept so Idk how 2...
Homework Statement
There is a water wave having a speed of .25 meter per second that causes a cork to move up and down 4.0 times in 8 seconds
what is the wavelength of the water wave
Homework Equations
v=f times wavelength
T=1/f
x=vt
The Attempt at a Solution
I used the formula...
Homework Statement
When does Fb(Buoyancy force) equal the drag force(FD)?
and Fb+FD=Fg
Homework Equations
Fb=density of water times volume of water times 9.80 m/s^2
FD=6pi times viscosity times radius times v
Fg=mg
The Attempt at a Solution
All ik is the solid has 2 be in the air...
This is what I did:
Fa=Fw-Fb
Fa=m(object)g-(density of fluid)(volume of fluid)(g)
Fa=(Density of the object)(Volume of the object)(g)-(Density of fluid)(volume of the fluid)(g)
Fa=g((density of object)(volume of the object)-(density of fluid)(volume of fluid))
m(a)=(density of...
I still kinda don't get what ur saying can u show me ur work because I dervived Fw=Density of object times g times V and I made this equation equal to Fa plus 9800 times volume of the fluid and I really need help please