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Over a year's time, a person receives a biologically equivalent dose of 21 mrem (millirems) from cosmic rays, which consist primarily of high-energy protons bombarding earth's atmosphere from space. The relative biological effectiveness of protons is 10.(a)What is the person's absorbed dose in rads?(b)The person absorbs2.3 × 10-3Jof energy from cosmic rays in a year. What is the person's mass?
A puck goes around its circular path once every 1.6 second. Its speed is 33 cm/s. Estimate what the radius of its circular path
A horizontal vinyl record of radius 0.0786 m rotates freely about a vertical axis during its center with an angular speed of 4.59 rad/s. The rotational inertia of the record about its axis of rotation is 2.54 x 10-4 kg·m2. A wad of wet putty of mass ..
Two waves are described by the following wave functions y1(x,t) = 3.50 sin (2.00x ? 10.0t) y2(x,t) = 12.00 cos (2.00x ? 10.0t) , find the amplitude and phase of this sinusoidal wave
Suppose 3.0 moles of a monatomic gas are maintained at a constant volume. By how much does the temperature increase if 800.0 J of heat is put into the gas
THe magnetic dipole moment of Earth has a magnitude 8*10^22 J/T. Assume that this is produced by charges flowing in Earth's molten outer core, what is the current that the charges produce
An LCR circuit contains a resistor with R =4200 Ω, a capacitor withC = 6000 µF, and aninductor with L = 2.0 mH, allconnected in series. The AC source has a frequency of 75 kHz.
Create a figure like Fig. 14.3, but which shows a detailed view of the Ly-man series. Let the wavelength scale at the top of your figure range from 0 to 150nm, as opposed to 0-2 μm in Fig. 14.3. Also include an energy level drawing like at the bottom..
The following charges are located inside a submarine: 4.00 µC, -9.00 µC, 27.0 µC, and-48.0 µC. (a) Calculate the netelectric flux through the hull of the submarine.
A box on a table top (m = 10 kilogram) is attached via a pulley to a hanging mass (45 kilogram). Obtain the acceleration, frictional force and tension of the system
Explain the difference between the rate law a reaction and the integrated rate law for a reaction. What relationship does each kind of rate law express?
A 57.4-kg skateboarder starts out with a speed of 2.04 m/s. He does 104 J of work on himself by pushing with his feet against the ground. How much has the vertical height of the skater changed
explain the shape of the distribution of sample means.
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