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A fisherman wants to know the mass of a trout he just caught but does not have scales. Instead he ties a rope at the 50.0 cm mark of a meter stick to suspend it. (He keeps a meter stick in the truck just for measuring fish! Ha!) He then hangs his water jug which he knows has a mass of 0.600 kg at the 20.0 cm mark of the meter stick. He balances the stick by hanging his fish at the 65.0 cm mark. What is the mass of the fish? HINT - you know the position of the center of mass (the balance point).
Consider a large parallel plate capacitor with circular plates of radius R. suppose that the electric field between the plates is increasing.
An electron in a circular path perpendicular to a constant magnetic field with a magnitude of 1.00mT. The angular momentum of the electron about the center of the circle is 3.000*10^-25. Evaluate the radius of the circular path
A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites, What is the total electric potential energy of this model of a water molecule
A parallel beam of light containing red (660 nm) and violet (410 nm) wavelengths goes from diamond to water, striking the surface between them at a 19° incident angle
a positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. what is the system's total kinetic energy
calculate the force of gravity between the earth and the moon. moons mass=7.4x10^22 kg ; average earth moon distance =3.8x10^8 m. Express your answer to two significant figures and include appropriate units. F=G((m1m2)/d^2)
What is the distance, measured along the screen, between this bright fringe and bright fringe corresponding to m = 3.
The mass of a robot is 5220 kg. This robot weighs 2650 N more on planet A than it does on planet B. Both planets have the same radius of 2.26 × 107 m
The bonds pays interest semiannually on June 30 and December 31. The bonds are issued to yield 5%. Illustrate what are the proceeds from the bond issue?
A 67.00 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between skis and snow is 0.19. What would be the magnitude of the acceleration.
Assume that the rod is held at rest horizontally and then released. (Throughout the remainder of this problem, your answer may include the symbol, moment of inertia of the assembly, whether or not you have answered the first part correctly.)
A 1 kg wheel (hoop) rolls 5 rev. across a horizontal surface (without slipping)a distance of 3.2 m. if the wheel rolls for 3 sec. determine the angular velocity of the wheel
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