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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.)
An automobile has a total mass of 1700 kg. It accelerates from rest to 40 km/h in 10 s. Assume each wheel is a uniform 32 kg disk. find the total kinetic energy of the automobile
A skateboarder, with an initial speed of 2.4m/s, rolls virtually friction free down a straight incline of length 19m in 3.2s. At what angle is the incline oriented above the horizontal
the speed of sound in helium is 965 m/s. if the density of helium is 0.179 kg/m^3, then what is the bulk modulus of helium
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in coming to a stopa car leaves a skid marks 92m long on th highway. assuming a deceleration of 7.0 ms squared estimate
A circuit consists of a 12.0-V battery connected to three resistors (43 ohm, 18 ohm and 110 ohm) in series. Find the current that flows through the battery
A tornado in the shape of a cylinder with a diameter of 100 m has an axis of rotation through its center which is along the vertical direction. The sense of rotation is cyclonic (counterclockwise). The wind is purely rotational, with a wind speed ..
the orbit of the planet venus is nearly circular with an orbital velocity of 126.5 x 103 kmh. knowing that the mean
Two slits, each of width 2.5nm are 7.5 nm apart.Monochromatic light of wavelength 630nm is incident on these two slits. Where on the screen do dark lines appear
A grandfather clock is powered by the descent of a 4.40-kg weight. If the weight descends through a distance of 0.750 m in 3.00 days, how much power does it deliver to the clock
Figure 19-26 shows two paths that may be taken by a gas from an initial point i to a final point f. Path 1 consists of an isothermal expansion (work is 60 J in magnitude), an adiabatic expansion (work is 38 J in magnitude), an isothermal compression ..
The electric field points due east and has a magnitude of 4.3 105 N/C. The mass of the electron is 9.11 10-31 kg and that of the proton is 1.67 10-27 kg. Both the proton and electron have charge magnitudes of 1.60 10-19 C.
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