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How would you describe your daily diet? For example, do you eat plenty of lean meats, fruits and vegetables or is your diet high in fat content and high in calories?
A laser beam of unknown wavelength is incident on a single slit of width 0.25 mm and forms a Fraunhofer diffraction pattern on a screen 2.0 m away. The width of the central bright fringe is measured t
A parachutist with mass 86.0 kg jumps from an airplane traveling at a speed vi=112 km/hr at a height H=2570 m. He lands with a speed of vf=5.21 m/s. What is the change in mechanical energy of the eart
A small electric car overcomes a 250 N friction force when traveling 30 km/h. The electric motor is powered by ten 12 V batteries connected in series and is coupled directly to the wheels wh
A 7.75- g bullet from a 9-mm pistol has a velocity of 397.0 m/s.It strikes the 0.785- kg block of a ballistic pendulum and passes completely through the block.If the block rises through a distance h =
A ball of mass 0.60 kg is fired with velocity 140 m/s into the barrel of a spring gun of mass 2.5 kg initially at rest on a frictionless surface.The ball sticks in the barrel at the point of maximum c
Design a cylindrical vacuum capacitor of a given radius a for the outer cylindrical shell, which will be able to store the greatest amount of electrical energy, subject to the constraint that the elec
Find how much energy is needed to remove one of the neutrons from a ^3H atom to yield a ^2H atom plus a neutron.The rest energy for:neutron = 939.565,proton = 938.272,^2H = 1875.613
Assuming that the Earth is spherical and recalling that latitudes range from 0° at the Equator to 90° N at the North Pole, how far apart,measured on the Earth's surface, are New Orleans, LA (2
A frictionless pulley has the shape of a uniform solid disk of mass 5.00kg and radius 25.0cm . A 2.20kg stone is attached to a very light wire that is wrapped around the rim of the pulley(Figure 1) ,
A capacitor consists of three concentric spherical shells with radii R,2R and 3R. The inner and outer shells are connected by a wire (passing through a hole in the middle shell, without touching it),
Im looking at a 12th magnitude bright star. I find an average of 11 speckles of light in each 10ms image.Assuming that the distribution of the speckles are poissonian how many images on average should
An elementary particle of mass M completely absorbs a photon, after which its mass is 1.01M.(a) What was the energy of the incoming photon?(b) Why is that energy greater than 0.01Mc^2?
Suppose that earth was formed as molten rock at some very high temperatures. Estimate the time for the earth to cool to 300 K.This calculation was first performed by Lord Kelvin. The cooling time dete
Determine the heat, work done, and changing enthalpy in each processes and complete cycle.1. adiabatic process V goes 1/2 V.2. isochoric process temp goes original temp.3. isothermal process 1/2V goes
What are the magnitude and direction of the x and y components of the electric field at the origin if there is a +2.0nC source charge located at x=1.0cm, y=0.0cm and a -4.0nC source charge located at
Estimate the sinking rate in water of a grain of sand that is 0:1 mm = 100 um in diameter. Assume that the density of quartz making up the sand is twice that of water. Do the experiment in a
Consider a tiny grain, 1 um in diameter, of neutrally-buoyant (ps = pw) material as it undergoes Brownian motion. How long will it take to diuse along some particular direction by 10 times i
You are the prosecuting attorney in a case. You are eliciting testimony from your star witness, who has said that he was sitting on his porch 600 ft away from the crime scene when he saw the defendant
A certian induction has the form B = \(( \alpha x /y ^{2} ) x + ( \beta y / x ^{2} ) + f ( x, y, z ). \).Where alpha and beta are constants. Find the most general possible form for the function f(x,y,
A 40.5-cm-by-40.5-cm checkerboard has a mass of 108.5 g. There are four 23.5-g checkers located on the checkerboard, as shown in the figure. Relative to the origin located at the bottom left corner of
A rocket in outer space has a payload of 4530.0 kg and 1.597·105 kg of fuel. The rocket can expel propellant at a speed of 3.300 km/s.Assume that the rocket starts from rest, accelerates to its
An electron beam contains electrons that move along the +x-axis at 0.020c. The beam enters a region of length 1.0 m and runs parallel to a wire that carries a 0.20-A current in the +x-direction. The b
An electron is moving in a plane with a long straight current carrying wire. The electron is heading at a 45 angle directly toward the wire when it is 50cm away; the electron reaches only as close as
A modern day Archimedes finds the weight of the King's gold crown to be 60.21 N. When suspended by a light thread and totally immersed in water, the weight is 56.53 N.What value does he calculate for