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Angle of 38.1^circ with the normal in the glass, while violet light makes a 36.7^circ angle. What are the indexes of refraction of this glass for these colors of light?
Speed of sound is 340m/sec. The observer is 10 meters from the road and the vehicle is 50 meters up the road. Calculate the observed frequency.
Charge of 3.2 × 10-19 C is released from rest near the positive plate. What is the kinetic energy of the α particle when it reaches the other plate? The distance between the plates is 50
A source delivers an AC voltage of the form Δv = 81.6 sin (82πt), where Δv is in volts and t is in seconds, to a capacitor. Find the rms voltage of the source.
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically.The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oat
Cable B can support up to 444.0 N. You want to place a small weight on this bar. What is the heaviest weight you can put on without breaking either cable?
A lawn roller is rolled across a lawn by a force of 128 N along the direction of the handle, which is 16.1 above the horizontal. If the lawn roller develops 68.4 W of power for 43 s, what distance
Diffraction also occurs with sound waves. Consider 1300-Hz sound waves diffracted by a door that is 84 cm wide. What is the angle between the two first-order diffraction minima?
According to one estimate, the first atomic bomb released an energy equivalent to 20 kilotons of TNT. If 1 ton of TNT releases about 4.0 109 J, how much uranium was lost through fission in this bom
In a Physics laboratory course, both a digital camera and a digital timer (photo-gate) are used for mechanics experiments.
A solid disk of radius R is composed of two different materials. For r < R/2, the material is one-third as dense as the remaining outer part with r > R/2. Calculate the moment of inertia abou
An 7.20 kg ball, hanging from the ceiling by a light wire 140cm long, is struck in an elastic collision by a 1.40kg ball moving horizontally at 6.00m/s just before the collision.
The coefficient of static friction between the 3000 lb car's tires and the road is 0.5. Determine the steepest grade the car can drive up at constant speed if the car has (a) rear=wheel drive; (b)
A convex mirror in a department store produces an upright image 0.25 times the size of a person who is standing 250 from the mirror.
A gas statopm sells an average of $1,000.00 per day of gas with a standard deviation of $100.00. Assuming sales are normally distributed, what is the probability that total sales for a 7 day period
A survey of 4,000 college graduates determines that the mean length of time to earn a bachelor's degree is 5.08 years and the standard deviation is 1.89 years. Construct a 95 percent confidence int
In Dallas, some fire trucks were painted yellow (instead of red) to heighten their visibility. During a test period, the fleet of red fire trucks made 153,348 runs and had 20 accidents, while the f
What are some terms related to hypothesis testing that you are already familiar with? Why do a null and alternative hypothesis have to be mutually exclusive? When would you accept the null hypothesi
Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.
On a statistics test student were asked to construct a frequency distribution of the blood creatine levels for a sample of 300 healthy subjects. the mean was 95 and the standard deviation was 40. th
It has been reported that about 35% of U.S adults attended a sports event during the previous years. What are the odds that a randomly selected U.S. adult attended a sports event during the year?
Total cholesterol in children aged 10-15 years of age are assumed to follow a normal distribution with mean of 191 and standard deviation of 22.4. What proportion have total cholesterol between 180
Supppose the replacement times for washing machines are normally distributed with a mean of 9.3 years and a standard deviation of 1.1 years. Find the probability that 70 randomly selected washing m