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During an earthquake P-waves travel 8 km/s and S-waves travel at 5 km/s. After an earthquake, the time between the arrival of the P-waves and S-waves is 4 minutes. How far away is the epicentre of the earthquake?
A block of mass m on a horizontal frictionless tabletop is pushed against a horizontal spring, compressing it a distance x,and the block is then released. The spring propels the block along the tabletop, giving a speed v.
A beam of light of wavelength 549 nm passes through two slabs of material of identical thickness d= 1.60 micrometers, as shown in the figure. The slabs have different indices of refraction: n1= 1.56 and n2= 1.73. What is the phase difference (in ..
A sphere of radius a has total charge Q. The volume charge density (in C/m^3) within the sphere is ρ(r) =C/r^2, where C is a constant equal to Q/(4πa).Discover expressions for the electric field both inside and outside the sphere as a function of the..
An object originally at rest breaks into two pieces as the result of an explosion. One piece (m2) has four times the kinetic energy of the other piece (m1). What is the ratio of the masses of the two pieces?
The practical limit for carbon-14 dating is about 60,000 years. If a bone contains 1.4 kg of carbon, and the animal died 55000 years ago, what is the activity today
Two small metallic spheres, each of mass 0.20g, are suspended as pendulums by light strings from a common point.
A sledge loaded with bricks has a total mass of 17.0 kg and is pulled at constant speed by a rope inclined at 19.9° above the horizontal. How much work is done by the rope on the sledge
Consider a non-ideal springthat exerts a force F(x)=-15.0 N/m x +3.00 N/m^2 x^2 , when it isdisplaced a distance x from its equilibrium length. Thedisplacement x is positive if the spring is stretched andnegative if the spring is compressed.
A biology student uses a simple magnifier to examine the structural features of an insect's wing. The wing is held 3.60 cm in front of the lens, What angular magnification is achieved
a unit of area often used in measuring land areas is the hectare defined as 104 m2. an open-pit coal mine consumes 83
Using the above result find the locations of the first three nodes. At what times during the interval will all of the points have zero velocity?
An airplane is flying through a thundercloud at a height of 2 km. There are charge concentrations of 30 C at height 3 km at the top of the cloud and -30.0 C at a height of 1km, What is the electric field E within the cloud
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