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A radioisotope has a half-life of 5.00 min and an initial decay rate of 5500 Bq .
Part A. What is the decay constant?
Part B. What will be the decay rate at the end of 5.00 min.
Part C. What will be the decay rate at the end of 10.0 min.
Part D. What will be the decay rate at the end of 25.0 min.
What are the different theories proposed for the formation of the Moon. What is the most widely accepted theory?
A rifle is aimed horizontally at the center of a large target 200 meter away the initial speed of the bullet is 500 m/s, Determine where does the bullet strike the target
A lightbulb has a resistance of 230? when operating with a potential difference of 180V across it. What is the current in the lightbulb? mA
A square wire 2.0 cm on each side is oriented so that 5.00 mT magnetic field makes a 30 degree angle with the normal to the plane of the square. if a 1.0 mA current causes a 25 N x m torque on the wire, how many loops does the wire make?
A magnetic field is perpendicular to the plane of asingle-turn circular coil. The magnitude of the field is changing,so that an emf of 0.80V and a current of 3.2 A are induced in the coil.
A bungee jumper (m = 73.00kg) tied to a 48.00m cord, leaps off a 78.00m tall bridge. He falls to 6.00m above the water before the bungee cord pulls him back up. What size impulse is exerted on the bungee jumper while the cord stretches?
A small sphere (emissivity = .9, radius = r1) is located at the center of a spherical asbestos shell (thickness = 1cm, outer radius = r2). The thickness of the shell is small compared to the inner and outer radii of the shell.
Planet-X has a mass of 5.28×1024 kg and a radius of 7870 km. What is the First Cosmic Speed i.e. the speed of a satellite on a low lying circular orbit around this planet? (Planet-X doesn't have any atmosphere.
It is observed that the size of a real image formed by aconcave mirror is four times the sizeof the object when the object is 34.5cm in front of the mirror. What is the radius of curvature of this mirror
How frequently are photoelectrons ejected in the experiment represented by the graph of Figure Ex38.4, in which the interval on the vertical axis is 2 µA and each interval on the horizontal axis is 1V?
A certain telescope forms an image of part of a cluster of stars on a square silicon charge-coupled detector (CCD) chip 2.00 cm on each side. How many star images then fit onto the chip
A Goodyear blimp typically contains 4250 m3 of helium (He) at an absolute pressure of 1.10 x 105 Pa. What is the mass (in kg) of the helium in the blimp
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