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The current in a 1.70mm Ã? 1.70mm square aluminum wire is 1.80A . What are
(a) the current density in MA/m^2 and
(b) the electron drift speed in micrometers/sec?
The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
One of the many isotopes used in cancer treatment is gold 19879Au, with a half-life of 2.70 days. Determine the mass of this isotope
Block 1, of mass = 0.500 , is connected over an ideal (massless and frictionless) pulley to block 2, of mass , as shown. Assume that the blocks accelerate as shown with an acceleration of magnitude = 0.300 and that the coefficient of kinetic frict..
If 70% of a radioactive sample has decayed in 5.0 x 103 years, what is the decay constant of the material
A pump is required to lift a mass of 780kg of water per minute from a well of depth 13.7m and eject it with a speed of 17.9m/s, What must be the power output of the pump
A ball of mas 0.250. Kg is attached to a string 0.750 m long. The ball is swung in a s pendulum-type motion such that it has a speed of 6.40 m/s, What is the corresponding tension in the string
A beam of light enters a cube of flint glass (n = 1.65) at a 24 degree angle from the normal. Calculate the exact angles the light travels at
A small mailbag is released from a helicopter that is descending steadily at 2.04 m/s. (a) After 4.00 s, what is the speed of the mailbag? (b) How far is it below the helicopter? (c) What are your answers to parts (a) and (b) if the helicopter is ..
how to compute the fraction of silver in the crown.
Calculate the kinetic energy that the earth has because of (a) its rotation about its own axis and (b) its motion around the sun. Assume that the earth is a uniform sphere and that its path around the sun is circular. For comparison, the total ene..
A proton moving with a velocity of 4.0 *10^4 m/s enters a magnetic field of 0.20 T. what is the magnitude of the force on the proton
What is the difference between a vector's x scalar component, How do equilibrant and resultant vectors relate to each other
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