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A uniform magnetic field its intensity is 3x10-3 T passes an area of the coil with 100 turns which makes 60 angles with the coil. What is the area of the coil if the magnetic flux is 0.15 Wb?
Light traveling in glass n=3/2 is incident on-air n=1. What is the angle of incidence that causes the light to experience total internal reflection?
According to Nielsen Media Research, the (population) average number of hours of TV viewing per household per week in the United States is 50.4 hours. Suppose the (population) standard deviation is known to be 11.8 hours. A random sample of 42 U.S. households is taken. What is the probability that the sample average is less thank 47.5 hours
how many kg of hot water at 80C must me added to cold water at 15C in order to make a 1.5kg mixture at 25C? Neglect heat losses
At 0.0°C and 1.00 atm, 1.00 mol of a gas occupies a volume of 0.0224 m3.
a) What is the number density?
b) Estimate the average distance between the molecules.
c) If the gas is nitrogen (N2), the principal component of air, what is the total mass? Molar mass of Nitrogen is 14.00674 g/mol.
d) If the gas is nitrogen (N2), the principal component of air, what is the mass density? Molar mass of Nitrogen is 14.00674 g/mol.
Which of the following has the lowest vapor pressure at room temperature and 1 atm pressure?
CH3CH3
CH3OCH3
CH3CH2OH
CH3OH
CH4
A group of four IC chips consists of two good chips and two defective chips. The experiment consists of selecting three chips at random from this group. Write the sample space of the possible outcomes. What is the probability that two are defective?
In a certain bimetallic strip, the brass strip is 0.100% longer than the steel strip at a temperature of 287°C. At what temperature do the two strips have the same length? Coefficients of linear expansion for steel α = 12.0 × 10−6 K−1 and for brass α = 19.0 × 10−6 K−1
A scuba diver is in fresh water has an air tank with a volume of 0.0100 m3. The air in the tank is initially at a pressure of 1.00 × 107 Pa. Assume that the diver breathes 0.500 L/s of air. Density of fresh water is 1.00 × 103 kg/m3.
How long will the tank last at depths of 4.10 m?
Incandescent lightbulbs are filled with an inert gas to lengthen the filament life. With the current off (at T = 20.0°C), the gas inside a lightbulb has a pressure of 126 kPa. When the bulb is burning, the temperature rises to 83.7°C. What is the pressure at the higher temperature?
