are the images in mirrors and shadows matter...? i realize they take up space but they dont have a mass ?please explain-Well, they DONT take up space.Im not sure where you got that idea.
It is true t
how do i solve this
At a certain place on earth the electric field portion of a plane electromagnetic wave is found to vary in the following way, expressed in SI units:
E=(2*10^-4)cos(5*10^6 *t)
if
Hi, I want to make sure I understand the concept of efficiency if you guys get the same answer as me.
What work is required to lift a 215 kg. mass a distance of 5.65 meters using a machine 72.5 perce
Two positive charge distant 0.1 m apart,repel each other with a force of 18 N.If the sum of the charges be 9 micro coulomb,then calculate their seperate forces-Hello Shahrukh, let one charge be q micr
Light of wavelength 500 nm, near the center of the visible spectrum, enters a human eye. Although pupil diameter varies from person to person, lets assume a daytime diameter of 2mm.
Estimate the angu
The distance between two negatively charged dust particle is 1 mm and they repel ech other with a force of 4.0*10^-5 N.If the charge on one particle is 4 times that of other,then find the no of electr
A container is filled with fluid 1, and the apparent depth of the fluid is 5.00 cm. The container is next filled with fluid 2, and the apparent depth of this fluid is 4.00 cm. If the index of refracti
A force of 75[E] acting on a wagon causes it to accelerate at 2.2m/s^2[E]. If a 55kg girl sits in the wagon and the same 75N[E] force is applied, find the new acceleration. Assume that no friction act
Four 6.5 kg spheres are located at the corners of a square of side 0.66 m. Calculate the magnitude and direction of the gravitational force exerted on one sphere by the other three.
Magnitude
?N-By s
One object of 0.5 kg falls from a height of10 m. Which is its momentum immediately before reaching the ground?-v = √(2*g*y) = 14 m/s
P = m*v = .5*14 = 7 kg∙m/s down-people will solve the question for
im curious what properties of aluminum make aluminum connecting rods expand with heat and stretch (reversibly) when pulled as opposed to steel which apparently does not.-Youre talking about the coeffi
so we did an experiment with a bottle rocket (2 L bottle, empty) we went outside and we registered the time the rocket flew (5,43 sec) that means that it took about 2,7 sec. to go at the highest point
I read a book where these kids are floating around in the earths crust and i wanted to know if this is even remotely possible.-Gravity is the strongest at the surface of Earth. Above or below it , it
A person is using a massless string to fly a kite. The kite has a mass of 0.620kg and the string is attatched to the kite at an angle of 58 degrees below the horizontal. The tension in the string is 1
...artificial gravity. What must be the value of r for the astronauts to weigh 1/5 of their earth weight?-v^2/r = accel = 9.8/5 = 2.0 m/sec^2
v = 26.5 m/s
r = v^2/2 = 702/2 = 351 m wow - thats more th
