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A mass m1 = 3.1 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4 kg which hangs freely from the string. When released, the hanging m
A proton is placed at rest near the positive side of two oppositely charged, parallel plates. There is a potential difference of 12 V. Calculate the amount of work done on the proton and the final s
A geologist finds that a Moon rock whose mass is 9.79 kg has an apparent mass of 6.50 kg when submerged in water. What is the density of the rock?
A wire 1.80 m long carries a current of 13.0 A and makes an angle of 35.0 degrees with a uniform magnetic field of magnitude B = 1.50 T. Calculate the magnetic force on the wire.
A proton moving with a velocity of 4.0×104 m/s enters a magnetic field of 0.20 T. If the angle between the velocity of the proton and the direction of the magnetic field is 60°, what is th
(a) Calculate the apparent distance between the fish and the front wall. (b) Calculate the apparent distance between the image of the fish and the front wall.
If a blood cell subtends an angle of 2.1 multiplied by 10-5 rad when viewed with the naked eye at a near point of 27.0 cm, what angle (magnitude only) does it subtend when viewed through the microsc
How far from the center of the earth is the center of gravity of the earth-moon system? (Note: the radius of the earth is 6400km)
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)