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Question1
A particle of mass m is attracted towards the origin under an influence of a force F=ma/x^3.
a) Find out potential energy
b) Assume that the particle is initially at rest at distance d from an origin.
Find the period it takes to reach the origin
Question2
A box is sliding up an incline that makes an angle of 15 degrees with respect to horizontal. The coefficient of kinetic friction between box and surface is 0.180. The initial speed of the box at the bottom of the incline is 1.50 m/s. How far does box travel along the incline before coming to rest?
A loudspeaker at a rock concert generates 10-2 W/m2 at 18 m at a frequency of 1 kHz. Suppose that speaker spreads its energy uniformly in all directions. What is the intensity level at 18.00m.
Calculate the commutation relation for the inner product of position and momentum and angular momentum. In other words, what is: [p\cdotr, L] (vector p dotted with vector r, vector L)
What is value of Earths magnetic field
An amount of ideal gas is con?ned to a sealed box at one-half atmospheric pressure, i.e., 50.65 kPa. What is the new pressure of the gas in the smaller box
A 10-cm-diameter cylinder of helium gas is 20 cm long and at 20°C. The pressure gauge reads 120 psi. how many helium atoms are in the cylinder? what is the mass of the helium?
One displacement vector A has magnitude of 2.78 km and point due north. Another displacement vector B has a magnitude of 7.40 km and also points due north. Provide diagrams and calculate the magnitude and direction of A+B, B-A, A-B.
A force of 17 N is applied to the end of a 0.63 m long torque wrench at an angle 45° from a line joining the pivot point to the handle
A 6.7uC particle moves through a region of space where an electrice field of magnitude 1300 N/C point in the positive x direction, find the components of the particle's velocity
A photon having E = 12.5 keV energy scatters from a free electron inside a metal. At which angle will the electron scatter
At what temperature is the speed of sound in helium (ideal gas, = 1.67, atomic mass = 4.003 u) the same as its speed in oxygen gas at 4.78 oC
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
IF Earth's orbit were suddenly to become much more eccentric. keeping orbital semimajor axis as is, fixed at 1 AU, but let's imagine shifting both the Earth's perihelion and aphelion points by 0.9 AU, so that at perihelion we were only 0.1 AU from th..
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