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The ammonia molecule NH3 has adipole moment of 5.2e-30 C·m. Ammonia molecules in the gasphase are placed in a uniform electric field with magnitude 1530000N/C.a) What is the change in electric potential energy when the dipolemoment of the molecule changes its orientation with respect to the electric field from parallel to perpendicular?
A rectangular metal block is 0.6 m long, 0.2 m wide, and 0.1 m tall. The block weighs 270 N. What is the density of the fluid
A projectile is fired at 60.0 o above the horizontal. Its initial speed is equal to 150.0 m/s. Like most problems in this class (2010), ignore the effects of air unless told otherwise
A pulsar is a rapidly rotating neutron star that emits a radio beam the way a lighthouse emits a light beam. We receive a radio pulse for each rotation of the star. The period T of rotation is found by measuring the time between pulses. Suppose a pul..
In an emergency, you need to run a radio that uses 39.3 W of power when attached to a 16.0 V power supply, how many series resistors should you use
If you wrapped a wire 1000 times around a hollow cylinder that was 10 cm long, and forced 4.0 amps of current through this solenoid, what would the strength of the magnetic field be
What would be the electric current intercepted by the total surface area of the planet?
n = 3.10 mol of Hydrogen gas is initially at T = 388 K temperature and pi = 1.76×105 Pa pressure. The gas is then reversibly and isothermally compressed until its pressure reaches pf = 7.75×105 Pa. How much heat did the gas emit
A 20 wood ball hangs from a 1-long wire. The highest tension the wire can withstand without breaking is 600. A 0.90 projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectile can have with..
The gauge pressure in both tires of a bicycle is 790 kPa. what is the area of contact of each tire with the ground
Consider a string with length 36 cm. The two ends are attached to the ceiling, separated by distance 30.0 cm. Determine the tension in the right segment of the string
In a closed but uninsulated container, 500g of water is shaken until it's temperature increases by 3 degrees Celsius. How much heat is transferred to the environment during the process
A 13g bullet traveling 221 m/s penetrates a 2 kg block of wood and emerges cleanly at 160 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges.
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