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Certain natural forms of potassium have nuclei that are radioactive. Each radioactive potassium nucleus decays to a slightly less massive daughter nucleus and a high-speed electron called a beta particle. If after the decay the daughter nucleus is moving at speed 200 m/s with respect to the decaying material, how fast is the electron (the beta particle) moving? The mass of the daughter is about 70,000 times greater than the mass of the beta particle.
A simple pendulum consists of a ball connected to one end of athin brass wire. evaluate the change in the period of the heated pendulum
Two pieces of the same metal, however of different mass and at different initial temperature, come in thermal contact. When the two pieces reach thermal equilibrium, which one will have greater temperature change? Assume that the two pieces form a cl..
7.4 mol of helium are in a 16 L cylinder. The pressure gauge on the cylinder reads 68 psi. calculate the average kinetic energy of a helium atom
A coin with a diameter of 2.40 cm is dropped on edge onto ahorizontal surface. how far does the coin roll before coming to rest
It is desired to construct a solenoid that will have a resistance of 6.00 (at 20°C) and produce a magnetic field of 4.00 10-2 T at its center when it carries a current of 4.80 A. estimate the length the solenoid should have
ray of light comes to the interface that is part of a sphere of radius r=15.0 cm. Where does the refracted ray cross the principal axis if the incident ray is 5.0 cm away from the principal axis
A rock is thrown upward from the level ground in such a way that the maximum height of its flight is equal to its horizontal range R. At what angle is the rock thrown
It is desired that 8.5C of charge be stored on each plate of a 4.5 -F capacitor. What potential difference is needed between the plates?
A disk spins with increasing angular velocity. Point Q on the disc is twice as far from the axis of rotation as in point P. Which point has the larger radial acceleration
A sinusoidal wave travels in the positive x direction with amplitude of 15.0 cm, a wavelength of 40.0 cm and a frequency of 8 Hz. The vertical displacement at x= 0 when t= 0 is 15.0 cm. Discover the period, the angular frequency and the speed of the ..
If 1.00 mol of oxygen is heated at constant pressure of 1.00 atm from 10.0?C to 25.0?C. What is the change of volume of the gas in this process
What is the ideal banking angle(in degrees) for a gentle turn of 1.20 km radius on a highway with a 105 km/h speed limit (about 65 mi/h)
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