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1. The formula of the ionic compound that forms from two ions, A2+and R5-, can be written as AxRy. What is the value of x?
2. A specific radioactive isotope has a half-life of 39.2 minutes. How long will it take this isotope to decay 1/8 of its original amount?
3. Two short-lived isotopes of an element are produced in a nuclear reaction. One of these isotopes has a mass of 5.3731 amu and accounts for 75.5% of the production. The remaining isotope has a mass of 7.3904 amu. Use this information to calculate the atomic mass of this element.
How large is the error of the scatter portion based on these measurements? You would like to increase your confidence in the scatter portion of the measurement and obtain this value with a precision of 3%. How long do you need to measure the beam ..
A 370-?F capacitor and a 10m H inductor are in series with a 365 ? resistor. What is the impedance at the resonant frequency
A spring is hung from the ceiling. A 0.300 kg block is then attached to the free end ofthe spring. Find the angular frequency of the block's vibrations
A blue ball is thrown upward with an initial speed of 20.4 m/s, from a height of 0.6 meters above the ground. 2.5 seconds after the blue ball is thrown, What is the maximum height the blue ball reaches
A block of mass 4.6 kg slides 15 m from rest down an inclined plane making an angle of 28 o with the horizontal. what is the retarding force due to friction
A ball is thrown vertically downwards from a height of 20 m with an initial velocity v02. It collides with the ground, loses 50 percent of its energy in collision and rebounds to the same height. The initial velocity v0 is (Take g = 10 ms-2)
a person looking out the window of a stationary train notices that raindrops are falling veritcally down at a speed of
Guillaume puts a bottle of soft drink in a refrigerator and leaves it there until its temperature has dropped 12.6 K. What is the magnitude of its temperature change? |ΔT|=12.6 K in degrees Celsius?
At what angle to the surface must a diver submerged in a lake look toward the surface to see the setting Sun just along the horizon
Light of wavelength 340 nm is incident on a metal surface and ejects electrons that have maximum speed of 3.50 x 105 m/s. What is the work function of the metal?
Find the minimum uncertainty in the speed of a bacterium hav-ing mass 3.0 x 10-15 kg if we know the position of the bacterium to within 1.0 micron, that is, to about its own size.
a 5 kg block is placed at rest 5 m (as measured from the uncompressed spring) along a smooth 37degrees incline. How high is the next bounce
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