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The half-life of a particular radioactive isotope is 6.5 h. If there are initially 4x10^19 atoms of this isotope, how many remain at the end of 26 h?
Please provide a solution and answer.
the only force actig on a 1.8-kg body as it moves along the x axis is given y f-3.0x n where x is in m. if the velocity
A collection of hydrogen atoms in the ground state is illuminated with ultraviolet light of wavelength 59.0 nm. Find the kinetic energy of the emitted electrons
On the periodic table, there are two numbers in the block for the element potassium, K: 19 and 39.098. What are the names of the numbers and what do they measure?
Two speakers, one directly behind the other, are each generating a 295-Hz sound wave. What is the smallest separation distance between the speakers that would produce destructive interference at a listener standing in front of them? Take the speed..
A laptop communicates with a router wirelessly, by means of radio signals. obtain how many bits are downloaded to the laptop in the time it takes the wireless signal to travel from the router to the laptop
Illustrate what are some pros and cons of the kitchen-sink reporting model? Illustrate what are some pros and cons of the minimalist reporting model? Explain and give examples for both.
Two 22.3-cm-focal-length converging lenses are placed 16.5?cm apart. An object is placed 35.0?cmin front of one lens. obtain the total magnification
A parallel-plate air capacitor is to store charge of magnitude 210pC on each plate when the potential difference between the plates is 43.0V. what potential difference is required for the capacitor to store charge of magnitude 210pC on each plate
A string with a mass m = 5.00 g and a length L = 9.00 m has one end attached to a wall; the other end is draped over a small, what is the fundamental frequency of its vibration
A wire with a length of 3.6m and a mass of 0.78kgis in a region of space with a magnetic field of 0.86T. What is the minimum current needed to levitate the wire
A 76 kg window cleaner uses a 13 kg ladder that is 5.0 m long. He places one end on the ground 3.0 m from a wall, What is the angle of this force on the ladder
A power supply maintains a potential difference of 81.5 V across a 1.01-k? resistor. What is the current in the resistor in milliamperes?
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