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The current in one wire is 3.6 A. What is the current in the second wire? Express the answer with two decimal places.
The actual working efficiency of this device is 30% What is the theoretical maximum efficiency?
The magnetic component of an electromagnetic wave in vacuum has an amplitude of 84.6 nT and an angular wave number of 4.10 rad/m. (a) What is the frequency of the wave? (In Hz)
A mass-spring system has b/m = w(naught)/5, where b is the damping constant and w(naught) the natural frequency.
In the Relativistic Heavy Ion Collider in Brookhaven, NY, physicists are attempting to recreate the conditions of the Big Bang by colliding extremely massive, highly-charged ions together.
Using energy considerations, determine how far up the incline the block moves before it stops (a) if the ramp exerts no friction force on the block and (b) if the coefficient of kinetic friction is
A 480 kg car moving at 14.4 m/s hits from behind another car moving at 13.3 m/s in the same direction. If the second car has a mass of 570 kg and a new speed of 17.9 m/s, what is the velocity of the
A very long cylinder of charge has a radius R and charge density p=Cr^2, where C is a constant.
Find the radius of curvature for this lens when you are looking at very distant objects.
What atomic transition in singly ionized helium will produce a photon with the same energy as the smallest energy photon in the Lyman series of hydrogen? (Hint: use energy level diagrams)
Imagine the current passing through the collider is 1 picoAmp. Using the information below, compute the area of the tunnel through which the particles travel inside the collider.
Light incident on a pair of slits produces an interference pattern on a screen 2.5 m from the slits. If the slit separation is 0.016 cm and the distance between the bright fringes in the pattern is
A 3kg object oscillating on a spring with k = 3,000 N/m has mechanical energy of .9 J. Find: A) The Amplitude of the motion.
A 2 kg block resting on a frictionless surface is attached to a spring (k = 700N/m ). A 1 kg block slides along the surface at 7 m/s and makes a perfectly inelastic collision (they stick together)
What is the current flowing through the collider? Please state your answer in pico-Amps (10-12 Amps).
What is the force with which the air inside the house pushes the roof upward? (please calculate this to 5 significant digits)
A circular loop of wire of radius 6.0 cm has 10 turns and lies in the yz plane. It carries a current of 5 A in such a direction that the magnetic moment of the loop is along the x axis. The magnetic
A firehose must be able to shoot water to the top of a building 28.0 m tall when aimed straight up. Water enters this hose at a steady rate of 0.500 m^3 and shoots out of a round nozzle. A. What is
In astronomy it is common to expose a photographic plate to a particular portion of the night sky for quite some time in order to gather plenty of light.
To what temperature (in degrees Celsius) must the aluminum alloy cathode be cooled? The expansion coefficient of the aluminum alloy is 2.4E-5.
Use the Hodgkin-Huxley model (equations and parameters from Hoppensteadt) for the nerve action potential to estimate the following:
The sun has a power output of 3.9 x 10^26 j/s in luminous light. (jupiter's distance is 7.8 x 10^11 m , it's radius is 66,854 km and it's mass is 1.90 x 10^27 kg) 1). calculate the radiation pressur
To what temperature (in degrees Celsius) will 67,379 J of heat raise 0.6 kg of water that is initially at 10.0 degrees Celsius?
A constant force of 20 N is applied to an object of mass 8.0 kg at an angle of 25° with the horizontal. What is the work done by this force on the object if it causes a displacement of 2.0 m alo
A spherical shell of inner radius 2.0 cm and outer radius 6.0 cm is charged to +9 nC A point charge of -6 nC is placed at the center of the shell. A. What are the charges, Q1 and Q2 on the inner and