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A.) Calculate the power dissipated in the 2 Ω resistor, if the voltage of the battarey is ε=21.2 V and the resistance of the resistor is R=8.7 Ohms? Express the answer to two decimal places.
B.) Find the resistance of a 21 meter length of metal wire of 0.5 mm diameter. The resistivity of metal is 1.4×10-6 Ω·cm at a temperature of 20°C. Express the answer with two decimal places.
bicyclists in the tour de france do enormous amounts of work during a race. for example the average power per kilogram
What is the magnitude of the force on a 0.20 kg particle placed at the origin (Point P)? What is the direction of this force?
A coin is located 22.0 cm to the left of a converging lens (f = 16.0 cm). A second, identical lens is placed to the right of the first lens, such that the image formed by the combination has the same size and orientation as the original coin. Find th..
A solenoid has a length of 13cm and has a total of 11170coils. The magnetic field strength near the middle is 732mT. What is the magnitude of the current in the solenoid?
Transcranial magnetic stimulation (TMS) is a noninvasive technique used to stimulate regions of the human brain. Determine the induced emf within a circle of tissue of radius 1.9 mm and that is perpendicular to the direction of the field
A beam of X-rays having a wavelength of .09nm impinges on an unknown crystal. What is the spacing between the atomic plates
The tape is now wound back into the drum at angular rate. With what speed would the end of the tape move? (Note that our drawing specifies that a positive derivative of implies motion away from the drum. Be careful with your signs. The fact that the ..
A parachutist of mass 50kg jumps out of an airplane at a hight of 1000m. The parachute deploys, and he hits the ground with a velocity of 5m/s. Find the average resistance on the parachutist
A proton moves through a magnetic field at 29.7% of the speed of light At a location where the field has a magnitude of 0.00639 T and the proton's velocity makes an angle of 119 degree with the field. what is the magnitude of the magnetic force actin..
An RL circuit has a 5 kO resistor and a 1 mH inductor. This circuit is driven by a 100 Hz sine wave with 1 V amplitude. What is the amplitude of the current in the circuit
A Solid cylindrical disk of mass M= 2 kg and radius R = 30 cm rotatates around its central axis at constant angular acceleration. Originally, angular velocity of the disk is 0.5 rad/s. After two complete revolutions disk's angular velocity is 2.5 rad..
A physics student wants to cool a glass of Diet Cola (mostly water), initially at 27°C, by adding ice initially at -18°C. If there is 250g of Diet Cola in the glass, how much ice must they add so that the final temperature will be 0°C?
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