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Suppose you start with a sample with 3.400×108 nuclei of a particular isotope. This isotope has a half-life of 399 s. What is the decay constant for this particular isotope? 1.737×10-3 1/s You are correct. Your receipt no. is 161-9165 Help: Receipt Previous Tries How many nuclei remain after 922 s?
In the figure below, sources A and B emit long-range radio waves of wavelength λ =430 m, by the phase of the emission from A ahead of that from source B by 90°. The distance r A from A to detector D is greater than the corresponding distance B with 1..
A satellite with a mass of 330 kg moves in a circular orbit 8.00 multiply.gif 107 m above the Earth's surface. What is the gravitational force on the satellite
Two identical point charges are fixed to diagonally oppositecorners of a square that is 0.500 m on a side. Each charge is +3.0x 10-6C. How much work is done by the electric force as one of the charges moves to an empty corner?
A power supply with internal resistance of 9 applies a voltage of 19 V. If a load resistor of 55 is in series with the power supply, then what is the current going during the circuit? Express the answer with two decimal places.
A skier approaches the base of an icy, frictionless hill with a speed of 13.4m/s . The hill slopes upward at 24.0^\circ above the horizontal. Find the acceleration of this skier
Human skin is most sensitive to ultraviolet light of approximate wavelength 300 nm. Find the energy of a single photon of such light
A 1.35 kg object is moving in the x direction at 16.4 m/s. Just 3.61 s later, it is moving at 28.8 m/s at 36.0^circ to the x axis. What is the magnitude of force applied throughout this time.
A cable is 50.0 m long and has a diameter of 2.50cm. A force of 10,000 N is applied to the end of the cable. what is the minimum value of young's modulus allowed
100g of unknown material is heated to 80 o C, and then dropped into 50g of water at 20 o C in an insulated container. The water temperature rises within a few seconds to 38 o C. Discover the specific heat of the metal.
Neglecting the mass of the rod, determine the initial compression of the spring so that the rod and mass reach the opposite vertical position with zero tension or compression in the rod.
A cylindrical wire is carrying a current that is non-uniform in both space and time, Find an equation that describes magnetic field inside the wire due to the current as a function of r from the center of the wire
The velocity of a diver just before hitting the water is -11.9 m/s, where the minus sign indicates that him motion is directly downward. Find him displacement during the last 1.12 s of the dive
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