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Manufacturers of headache remedies routinely claim that their own brands are more potent pain relievers than the competing brands. Their way of making the comparison is to compare the number of molecules in the standard dosage. Tylenol uses 325 mg of acetaminophen (C8H9NO2) as the standard dose, while Advil uses 2.00 x 102 mg of ibuprofen (C13H18O2). Find the number of molecules of pain reliever in the standard doses of
(a) Tylenol and
(b) Advil.
Three moles of a monatomic ideal gas are heated at a constant volume of 2.23 m3. What is the change in the temperature of the gas
A 100-? resistor, an inductor and a 3.0-µF capacitor are connected in series with a time varying emf of 10.0 V and frequency 1000 Hz. What is the inductance of the inductor
The electric field of an electromagnetic wave in a vacuum isEy = (17.0 V/m)cos((6.28 ×108)x??t), where x is in m and t is in s. What is the wave's magnetic field amplitude
The carbon isotope 14C is used for carbon dating of archeological artifacts. 14C ( mass 2.34×10?26kg) decays by the process known as beta decay in which the nucleus emits an electron, What is the recoil speed of the nucleus
A string fixed at both ends is 8.98 m long and has a mass of 0.125 kg. What is the longest possible wavelength for a standing wave
A solid aluminum cylinder with density equal to 2700 kg/m3 has the weight equal to 0.66 N in air, what is the density of the liquid
A circular disc of mass 10 kg is suspended by a wire attached to its centre. Determine the torsional spring constant of the wire
An inductor (L = 400 mH), a capacitor (C = 4.43 F), and a resistor (R = 500 ?) are connected in series. A 50.0-Hz AC source produces a peak current of 250 mA in the circuit. (a) Calculate the required peak voltage Vmax. (b) Determine the phase ang..
An experimental apparatus includes a prism made of sodium chloride (n=1.54). what is the required apex angle of the prism
A plastic bag is filled with nitrogen at atmospheric pressure and 27.0 oC. How large a volume of nitrogen (in m3) is required
Two carts are involved in an elastic collision. The dynamics cart A with mass 0.550 kg hits the collision cart B with mass 0.550 kg (initially at rest). What is the final kinetic energy of the system
How various meters away is a cliff if an echo is heard 0.475 s after the original sound? Assume that sound traveled at 343 m/s on that day.
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