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the two stars in a binary star system have masses 1.7 x 10 ^ 30 kg and 5.8 x 10 ^ 30kg. They are separated by 2.1 x 10 ^ 12m.
a.) What is the system's rotation period, in years?
b.) What is the speed of the lightest star?
c.) What is the speed of the heaviest star?
In a model AC generator, a 500-turn rectangular coil 8.0 cm by 20 cm rotates at 120 rev/min in a uniform magnetic field of 0.60 T. what is the maximum emf induced in the coil.
A beam of light in air strikes a piece of glas (n = 1.59), Find the angle of incidence if the angle of reflection is twice the angle of refractio
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 oC and rejects heat to a room at 24.0 oC. How much energy must be supplied to the device
A film of oil with refractive index 1.45 floats on water with refractive index of 1.33. Determine the thickness of the oil film
A step-down transformer has a turns ratio of 1:10, and its primary is connected across the terminals of a standard 120-V wall socket. What power P is dissipated in the resistor
The resistance of the loop is 0.490 ohms. A magnetic field parallel to z-axis is given by B= 0.830 y^2 t, where B is in tesla, y in meters, and t in seconds. What is the size of the induced current in the loop at t = 0.470s .
Suppose the river is flowing east at 3 m/s and the boat is traveling south at 4 m/s with respect to the river, Find the speed and direction of the boat relative to Earth
What current is required in the windings of a long solenoid that has 1710 turns uniformly dispersed over a length of 0.547 m in order to produce a magnetic field of magnitude 0.0002 T at the center of the solenoid.
A magnetic field is directed at a 40.0 angle to a plane circular loop of wire with a radius of 26.8 cm. a) draw a diagram showing the wire loop, what is the induced emf in the wire loop
An electric dipole consists of charges +2e and -2e separated by 0.78nm. It is in an electric field of strength 3.4 x 106 N/C. Calculate the magnitude of the torque on the dipole
A 72.0-kg log falls from a height of 20.0 m into a lake. find the change in entropy of the air during this process
If 1800J of heat are added to a 190-g object, its temperature increases by 10o C. What is the heat capacity of this object
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