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A 100 W lightbulb is plugged into a standard 120 V outlet. How much does it cost per month (30 days) to leave the light turned on continuosly? Assume electrical energy costs 7.5/kWh. (Enter dollars with no unit) What is the resistance of the bulb? What is the current in the bulb?
An electron moves in the xy plane with a speed of 3.75 x 106 m / s at an angle 600 with the x-axis 300 and the axis. A magnetic field of 0.85T is in the positive direction of axis y. Find the magnetic force on the electron.
When a potential difference of 168 V is applied to the plates of a parallel-plate capacitor, the plates carry a surface charge density of 23.0 nC/cm2. What is the spacing between the plates
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 5639.0 tonnes to a height of h = 14.0 m (1 tonne = 1000 kg). How much work is done by the crane
The driver of a 1740 car traveling on a horizontal road at 110 suddenly applies the brakes. How many meters does it travel before stopping under these conditions
A 2130 satellite used in a cellular telephone network is in a circular orbit at a height of 800above the surface of the earth. What fraction is this force of the satellite's weight at the surface of the earth
A cyclist, traveling at a constant speed, covers a distance of 6860 m in a time period of 34.5 minutes. Calculate the power the cyclist must provide in overcoming that force
A series AC circuit contains a 159 ? resistor, a 360 mH inductor, a 2.4 µF capacitor, and a generator with maximum voltage of 240 V operating at 50 Hz. Calculate the inductive reactance
A dentist's mirror is placed 2.3 cm from a tooth. The enlarged image is located 5.8 cm behind the mirror. How is the image oriented relative to the object
Astronomers discover an exoplanet (a planet of a star other than the Sun) that has an orbital period of 3.31 Earth years in its circular orbit around its sun
A circuit consists of a battery connected to three resistors (65?, 26?, and 170?) in parallel. find the current through each resistor
An electron is in a certain energy state in a one-dimensional, infinite potential well from x = 0 to x = L = 200pm. What is the frequency of the photon that is emitted
Neutrons (RBE = 2.0) and some unknown radiation type have the same biologically equivalent dose. What is the RBE for the unknown radiation
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