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The Bohr radius of the hydrogen atom is 0.529 ?, or 0.0529 nm. Assuming that we know the position of an electron in this orbit to an accuracy of 1% of the radius, calculate the uncertainty in the velocity of the electron. Be sure to include units in all calculations. (Note: Use the equation ΔxΔp=h, where h is equal to Planck's constant, approximately 6.626 x 10-34 J s. The mass of an electron is approximately 9.11 x 10-31 kg.)
With the switch open the ammeter reads 1.00 A. What is the resistance of resistor R2 to an appropriate precision and what is the potential difference across R2 when the switch is open?
a 5.00 kg wood cube rests on a frictionless horizontal table. it has two springs attached to it on opposite faces. the
Two wires are parallel, and one is directly above the other. Each has a length of 55.8 m and a mass per unit length of 0.0260 kg/m. But, the tension in wire A is14.6×102 N, while the tension in wire B is 2.31×102 N. Transverse wave pulses are generat..
Physics - Speed and Direction, Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next.
Two conductors are made of the same material and have the same length l. Conductor A is a hollow tube and inside diameter is 1.5mm and outside diameter is 7.30mm; conductor B is a solid wire with radius Rb, what value of Rb is required for the two co..
a small fly of mass 0.30 g is caught in a spiders web. the web vibrates predominately with a frequency of 3.4 hz.what
A car travels at a constant speed around a circular track whose radius is 2.6 km. compute the magnitude of the centripetal acceleration of the car
To stir a mixture of liquids consistently and gently, abiologist designs a simple mechanical system consisting of ahorizontal spring attached to a beaker on the slippery Teflonsurface. What is the required spring constant
The heels on a pair of women's shoes have radii of 0.42cm at the bottom. If 32 percent of the weight of a woman weighing 580N is supported by each heel, find the stress on each heel.
A river that is 207 m wide flows due east at a uniform speed of 1.9 m/s. What is the magnitude of the boat's velocity
An astronaut weighs 85 N on the Moon, where the acceleration of gravity is 1.62 m/s2. How much (in N) does she weigh on Earth
q1. two identical 30 rm g particles each carry 3.0 rm mu c of charge. one is held fixed and the other is placed 1.0 rm
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