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Compute the given questions:
Question I: A radioactive isotope has an activity of 8.56 mCi. After 3.25 hours the activity is 5.74 mCi. What is the half-life of the isotope?
Question II: What is the activity after an additional 3.25 hours in mCi units?
Show all work, use additional paper if necessary.
An electric motor can accelerate a Ferris wheel of moment ofinertia I = 22000kg·m2 from rest to 10.0rev/min in 12.0 s. Determine the torque generated by the motor to bring the wheel to 10.0 rev/min
A conducting rod with a length of 25 cm is placed on a U-shaped metal wire that has a resistanceRof 8.0 ? as shown in the figure. The wire and the rod are placed in the plane of the paper.
A long solenoid lying along the x-axis, as shown, has a 0.2 T field inside its coils. What is the magnitude of the magnetic force on the particle
Four resistors 13 ohm, 17 ohm, 19 ohm, and 32 ohm are in parallel. Calculate the equivalent resistance
A beaker of water sits in the sun until it reaches an equilibrium temperature of 30°C. Calculate how much ice remains after the system reaches equilibrium
A thermodynamic system is operated at a constant pressure of 2 atm. What is the new volume of the system
A second baseman tosses the ball to the first baseman, who catches it at the same level from which it was thrown. What is the ball's direction of motion just before it is caught
Two forces act on a 5kg object. One force is 40 N and directed east. the other force is directed west. what is the magnitude and direction of the second force
A small metal bead, labeled A, has a charge of 29 . It is touched to metal bead B, initially neutral, so that the two beads share the 29 charge, but not necessarily equally. When the two beads are after that placed 5.0 apart, the force between the..
A light bulb emits light uniformly in all directions. The average emitted power is 150.0 W. At a distance of 5 m from the bulb, decide (a) the peak value of the electric field (b) the rms value of the electric field and (c) the average intensity of t..
Water is contained in a closed, rigid, 0.25 m3 tank at an initial pressure of 5 bar and a quality of 60%. Heat transfer occurs until the tank contains only saturated vapor. Determine the final mass of vapor in the tank, in kg, and the final pressu..
Water is flowing in a horizontal pipe of variable cross section. Where the cross-sectional area is 1.10×10-2 m2, the pressure is 5.60×105 Pa and the velocity 0.80 m/s. In a constricted region where the area is 5.00×10-4 m2
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