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Question1
Imagine you are on a planet similar to Earth where an acceleration of gravity is approximately 10 m/s2.
The pulley is massless and frictionless. A massless inextensible string is attached to masses. The objects are initially held at rest. If a third object with a mass of 18 kg is hung on one of the 36 kg objects and the objects are released, the magnitude of the acceleration a of the 18 kg object is most nearly.
Question2
At a particular instant of time, a light beam travelling in the positive direction has an electric field given by E= (6.22N/C) x + (2.87N/C)y.The magnetic field in the beam has a magnitude of at the same time. Note down B in terms of unit vectors.
Calculate the speed of an 8.5 × 104 kg airliner with a kinetic energy of 1.2 × 109 J
How much work is required to compress 5.05 mol of air at 19.1°C and 1.00 atm to one-eighth of the original volume by an isothermal process
The potenial energy for the force between two atoms in a diaomic molcules a-b has he approximate form v(x)= (-a/x^6 )+ (b/x^12), find the frequancy for small vibration
As you stand on a pier looking at a harbor, the waves created by a large freighter come ashore. You estimate the wavelength to be 3.0 m, What is the frequency of the wave in hertz
A solid, horizontal cylinder of mass 10.0 kg and radius 1.30 m rotates with an angular speed of 5.50 rad/s about a fixed vertical axis through its center. Determine the final angular speed of the system
An initially neutral conductor contains a hollow cavity in which there is a -100 nC point charge. what is the charge on the inner wall of the cavity wall
A pendulum, consisting of a ball of mass m on a light string of length 1.00 m, is swung back to a 45° angle and released from rest. What is the velocity of the ball immediately after the collision
Three moles of an ideal monatomic gas expands at a constant pressure of 2.60 atm, Calculate the amount of heat added to the gas
The rotor of an electric motor has rotational inertia Im = 5.12 x 10-3 kg·m2 about its central axis.Calculate the number of revolutions of the rotor required to turn the probe through 31.3° about its central axis
Heather and Mathew walked eastward with a speed of 9.8 m/s. If it takes those 34 min. to walk to the store, how far have they walked.
A capacitor is made from two hollow, coaxial, iron cylinders, one inside the other. The inner cylinder is negatively charged and the outer is positively charged; the magnitude of the charge on each is 10.0pCpC .
Suppose you put five electrons into a 0.30nm -wide one-dimensional rigid box (i.e., an infinite potential well). What is the ground-state energy
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