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How much work is required to turn an electric dipole 180° in a uniform electric field of magnitude E = 41.0 N/C if p = 2.54 10-25 C·m and the initial angle is 80°?
a yo-yo has a rotational inertia of 1080 gmiddotcm2 and a mass of 140 g. its axle radius is 2.5 mm and its string is
An oscillator with a mass of 500 g and a period of 0.50s has an amplitude that decreases by 1.0% each complete oscillation. If the initial amplitude is 20 cm, what will be the amplitude after 21 oscillations?
An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2. The coyote starts at rest 70.0 m from the edge of a cliff at the ins..
Steam is expanded from 12.5 MPa and 900 degrees Celsius to 0.30 MPa, 400 degrees Celsius in an adiabatic turbine. Determine the isentropic efficiency of this turbine
A proton moving at 3.6*10^5m/s to the right enters a region where a uniform electric field of magnitude 60kN/C points to the left
An 1800W toaster, a 1.3kW electric frying pan, and a 120 W lamp are plugged into the same 35A, 140V circuit. what is the resistance of each device
When an electric heater is turned on, the Nichrome heating element is at 0° C and draws a current of 15 A, with a potential difference of 120 V between the ends of the element. The element heats up to 797° C, with the potential difference constant..
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 3.8m , then drops 1.8m down a hole into its burrow
A balloon contains 10 lbs of Helium at a temperature of 70 ?F. If the volume of the balloon is 300 ft3, what is the pressure of the balloon
a train moving with constant velocity travels 170 m north in 12 s and an undetermined distance to the west. the speed
An electron is confined in a harmonic potential well that has a spring constant of 1.50 N/m. What are the first three energy levels of the electron
1 puck 1 has a mass of 146g puck 2 has a mass of 48g. the centers of the pucks are 20 cm apart. at what position is the
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