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The Eurasian plate, has a mass of 2.5*10^22kg and travels over the Earth's interior at 7 mm yr^-1. Express this speed in m s^-1(note there are 3.15*10^7 seconds in a year).
Using the equation for kinetic energy Ek=1/2mv^2 (where m is mass and v is speed) calculate the kinetic energy of the Eurasian plate, give the final answer to the nearest order of magnitude.
Regarding the Earth and a cloud layer 650m above the Earth as the "plates" of a capacitor, calculate the capacitance. Assume the cloud layer has an area of 1 km2 and that the air between the cloud and the ground is pure anddry.
a uniform electric field of magnitude 435 nc pointing in the positive x-direction acts on an electron which is
A block of mass 12.0 kg slides from rest down a frictionless 35.0° incline and is stopped by a strong spring with k = 2.80 104 N/m. how far has the spring been compressed
An infinite non conducting sheet has a surface charge density σ = 8.00 pC/m2. Obtain how much work is done by the electric field due to the sheet if a particle of charge q = +1.60 ×10-19 C is moved from the sheet to a point P at distance d = 3.58 cen..
A proton is traveling at a velocity of 10^5 m/s at 45 degree up from east (among x and y axes). At this time, Fg is the gravitational force near the earth acting straight down. Specify the force in diagram (magnetic force) and i, j and k-component.
A 40 ohm resistor and a 60 ohm resistor are connected in series to a 12 volt battery. What is the voltage difference across each resistor
A battery has an emf and an internal resistance . When the battery is connected to a 25 resistor, the current through the battery is 0.65 . When the battery is connected to 60 resistor, the current is 0.45 .
A fuse in an electric circuit is a wire that is designed to melt,and thereby open the circuit, if the current exceeds apredetermined value. Suppose that the material to be used in a fusemelts when the current density rises to 360 A/cm2.
A 1.50*10^3-kg car starts from rest and accelerates uniformly to 19.1 m/s in 12.0 s. Find the instantaneous power output of the engine at t = 12.0 s, just before the car stops accelerating
The density of water at 0°C is 999.84 kg/m3 and at 4°C it is 999.96 kg/m3. find how much of the water has spilled from the container, assuming that the contraction of the container is negligible
Zach, whose mass is 71kg , is in an elevator descending at 13m/s . The elevator takes 5.0s to brake to a stop at the first floor. What is Zach's apparent weight while the elevator is braking
1. A 2.2 uC point charge is on the x-axis at 4.6 m, and a 4.5 uC point charge is on the x-axis at 2.8 m. Find the magnitude of the net electric field at the point on the y-axis where y= 2.2 m. The value of Coulomb constant is 8.98755 * 109 N.m2/C2. ..
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