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Suppose there is a rollercoaster on a frictionless track. It is at the top of the track (the part where the rollercoaster suddenly drops off and you lose your stomach) and at the bottom of the track
Calculate voltage at following times: .025s, .050s, .075s. (c)plot in v vs time. Does the curve resemble a sinusoidal curve?
What is the magnitude of the electric field at the point (3.20i - 2.25j + 3.85k) m if the electric potential is given by V = 2.00xyz2, where V is in volts and x, y, and z are in meters?
The spheres are connected by a massless nonconducting string of length d = 1.00 m, which is much greater than the radii of the spheres. a) What is the electric potential energy of the system? (J)
List the three main classes of meteorite and describe how they can be distinguished on the basis of their principal constituents.
In a cookbook, a poultry thawing chart states that a 10-kg turkey takes 4 days to defrost in a refrigerator. Estimate how long it would take to defrost a 2-tonne Siberian mammoth from the same initi
A solid uniform sphere and a uniform spherical shell, both having the same mass and radius, roll without slipping down a hill that rises at an angle (theda) above the horizontal. Both spheres start
A uniform board 12 ft long weighs 10 lbs. Two feet from the left end is centered a 3lbs structure. How far from the left end is the balance point i.e. the point at which if you applied 13 lbs upward
A 3500kg statue is placed on top of a cylindrical concrete (Y = 2.3 x 1010N/m2) stand. The stand has a cross sectional area of 7.3 x 10-2m2 and a height of 1.8m. By how much does the statue compress t
Philippine Aviation design calls for a lift due to the net force of moving air on the wing of about 2000N per m2 of wing area.
A wire 50.0 cm long and under tension 400N is placed near a louderspeaker fed by an audio oscillator of variable frequency. As the frequency of the oscillator is varied over the range 500-1500 Hz ,
Why were the relative intensities of an element's spectral line not all the same?
The helium neon lasers usually used in classrooms typically provide an intensity of about 1m/W/mm^2. What are the rms electric and magnetic fields for such a beam.
The elevator accelerates upward with constant acceleration for a distance of 3.6 and then starts to slow down. What is the maximum speed of the elevator?
How many protons must combine to make one He nuclei every second to provide the luminosity of the sun? Estimate how long the Sun could go on at this rate before all its protons were used up.
(a) prove that the total momentum of the system is zero (b) prove that the total angular momentum of the system (Lem) is independent of the choice of origin
An object is dropped from rest from a height of 5.4 x 10^6 m above the surface of the earth. If there is no air resistence, what is its speed when it strikes the earth? The acceleration of gravity i
Your accident-reconstruction team has been hired by the local police to analyze the following accident. A careless driver rear-ended a car that was halted at a stop sign. Just before impact, the dri
Determine the diameter of the pupils of his eyes that would be required for him to be able to resolve the squirrels as separate objects. In this calculation use a wavelength of 498 nm (in vacuum) fo
Non-relativistic protons accelerated by a potential difference U form a round beam with current I. Find the magnitude and direction of the Poynting vector outside the beam at a distance r from its a
Estimate the amount of water this cyclist must evaporate per hour (through sweat) to get rid of excess body heat she produces. Assume a skin emissivity of .70
A ball is thrown horizontally off of a 40-meter high cliff. It lands in the water 30 meters beyond the edge of the cliff. Find the speed with which the ball was thrown.
Suppose an electron is released from rest in a uniform electric field whose strength is 5.90 x 103 V/m. (a) Through what potential difference will it have passed after moving 1.00 cm?