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1. Two short-lived isotopes of element are produced in a nuclear reaction. One of these isotopes has a mass of 5.3731 amu and accounts for 85.5% of the production. The remaining other isotope has a mass of 7.3904 amu. Use this information to calculate the atomic mass of this element.
2. A specific radioactive isotope has a half-life of 24.2 minutes. How long will it take this isotope to decay to 1/8 of its original amount?
3. The formula of the ionic compound that forms two ions,A^2+ and R^9-, Can be written as AxRy. What is the value for X?
An oscillating LC circuit has a current amplitude of7.30 mA, a potential amplitude of 250mV, and a capacitance of 205 nF. What is the maximum rate at which the current changes
A light rail train going from one station to the next on a straight section of track accelerates from rest at 1.1 m/s2 for 20 s. What is the distance between the stations
The light shining on a diffraction grating has a wavelength of 494 nm (in vacuum). How many lines per centimeter does the grating have
Calculate the approximate radius of a nucleus of gold, 197 79Au. Calculate the approximate volume of a nucleus of gold, 197 79Au. Calculate the approximate density (in kg/m3) of a nucleus of gold, 197 79Au.
Experiment-Diffraction Grating, Convert λ, wavelength, of laser from nm to m. Remember 1 nm = 1 x 10 -9 m. Average all Δx values to get one Δxavg
A 23-g lead bullet is shot with a speed of 320 m/s into a wooden wall. Assuming that 60% of the kinetic energy is absorbed by the bullet as heat (and 40% by the wall), what is the final temperature of the bullet
What angular velocity would be required to give a rotating object of mass 25 kg and a radius of 2 m a centripetal force of 50 N
Compute the horizontal distance the ball
Suppose your bathroom scale reads your mass as 82 kg, with an 8% uncertainty. What is the uncertainty in your mass? (Note that uncertainties should be reported to one significant figure.)
A particle lives for a short time before breaking apart into other particles. According to this hypothetical person, how far does the laboratory move before the particle breaks apart
An object is placed 12 cm in front of a concave mirror whose focallength is 23 cm. The object is 3.6 cm tall. Determine (a) the location of the image,taking a real image as a positive value and a virtual image as anegative value.
A 4mm diameter circular coil of 25 turns and total resistance 0.001O lies in the x-y plane at a distance of 3m from a long straight current-carrying wire along the x-axis. If the current in the wire is increasing at a rate of 0.2 A/s,
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