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A 2kg book is sitting on a horizontal glass table top. A woman pushes the book across the table with a horizontal force F. The book's position changes as a function of time given by x(t) = (2.9 m/s^3)t^3-(3.6 m/s^2)t^2. What is the book's velocity at .2 second? Calculate the magnitude of the force at .2 seconds. Find the work done by the force during the first 1.2 seconds of its motion.
A long straight wire carries a current of 90 mA. What is the magnitude of the magnetic field 9 cm from the wire
A tennis ball is dropped from 1.13 meter above the ground. It rebounds to a height of 0.821 meter. Compute with what velocity does it leave the ground
A referee's whistle operates at 800Hz. What is the frequency you hear when she is running toward you on the court at 5 m/s
What is the electric potential at C
Under favourable circumstances the human eye can detect 1.0e-18 J of electromagnetic energy. How many 600-nm photons does this represent.
two conductors having net charges of 16.0 microc and -16.0 microc have a potential difference of 16.0 v between them. a
a 10.0kg, 16.0m long, uniform beam is supported by two scales. A 40.0kg box is placed on the beam. what are the scale readings
Two infinite parallel plates separated by distance S are at potentials 0 and V0. What are the charge densities on the plates
A car of mass 3.0 x10^3 kg traveling at a speed of 20 m/s is passing a truck of mass 7.0x10^3 kg traveling at a speed of 10 m/s in the same direction along the same straight line
Consider two infinite parallel plane conducting plates, of finite thickness, with separation d. Suppose a charge density of σ is placed on one plate, while the other plate has -2σ. Determine the resulting charge densities on each of the 4 surfaces
The density of a 2.39-m long rod can be described by the linear density function ?(x) = 107 g/m + 11.9x g/m2, Determine the total mass of the rod
in a worst-case design scenario a 2000kg elevator with broken cables is falling at 4.00ms when it first contacts a
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