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Above graph shows the data collected by a student who wanted to find the resistance of an unknown resistor. Questions below are based on the graph and his experiment.
a) What is the law he can probably use in the above experiment?
b) State the law you have mentioned in part a).
c) Calculate the unknown resistance by using the above graph.
d) Draw the circuit the student has used. (clearly show the position where he has attached the volt meter (DMM used to measure voltage) and ammeter (DMM used to measure current))
The electric potential energy stored in the capacitor of a defibrillator is 68 J, and the capacitance is 120 µF. What is the potential difference across the capacitor plates
q1. a 80-g ball collides elastically with a 350-g ball that is at rest. if the 80-g ball was travelling in the positive
An ambulance moving at 36 m/s sounds its siren whose frequency is 350 Hz. What frequency does a person in the car hear as the ambulance approaches the car
A 6.250 keV x-ray photon strikes a carbon atom and is scattered with a Compton scattering with one of the carbon’s electrons. The energy of the scattered photon is measured to be 6.175 keV. What is the wavelength of the scattered photon? During what ..
What is the magnitude of the electric field between the plates?
An 80 kg skydiver falls through air with a density of 1.15 kg/m3 . Assume that his drag coefficient is C=0.57. What are the terminal speeds in both cases
Two parallel plates of area 51 cm.^2 have equal but opposite charges of 4.10E-07 C. Within the dielectric material filling the space among the plates, the electric field is 3.60E+05 V./m. Find the dielectric constant of the material.
As you stand by a railroad track a train passes with its whistle blowing. Determine how fast is the train moving
A large, cylindrical roll of tissue paper of initial radius R lies on a long, horizontal surface with the outside end of the paper nailed to the surface. Determine the speed of the center of mass of the roll
A dentist's drill starts from rest. After 2.90 s of constant angular acceleration it turns at a rate of 2.2 104 rev/min. Find the drill's angular acceleration
A force vector has a magnitude of 595 newtons and points at an angle 39o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
Consider a uniformly volume-charged sphere of radius R and charge Q What is the electric potential on the surface of the sphere in terms of R, Q, and 0, choosing the zero reference point for the potential at the center of the sphere.
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