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Is polarization a property of all electromagnetic waves, or is it unique to visible light? Can
sound waves be polarized? What fundamental distinction in wave properties is involved?
Explain.
QUESTION THREE
In a Competitive examination of 5000 students, the marks of the examinees in statistics were found to be distributed normally with mean 45 and standard deviations 14.
Determine the number of examinees whose marks, out of 100 were;
(i) Less than 30. 2MKS
(ii) Between 30 and 70. 2MKS
(iii) Between 60 and 80. 2MKS
(iv) More than 60. 2MKS
(v) More than 40 2MKS
in the context of the circular flow of economic activity, which of the following would not be a traditional activity of the government
An inductor, a capacitor, and a resistor are all connected in series across an ac source.
If the resistance, inductance, and capacitance are all doubled, by what factor does each of the following quantities change? Indicate whether they increase or decrease: (a) the resonance angular frequency; (b) the inductive reactance; (c) the capacitive reactance. (d) Does the impedance double?
A hair dryer is treated as a pure resistor. But because there are coils in the heating element and in the motor that drives the blower fan, a hair dryer also has inductance.
Qualitatively, does including an inductance increase or decrease the values of R, Irms, and P?
If a dog has 39 chromosomes in its sex cell how many chromosomes are in its body cell
Consider all the possible samples of size 2 that can be drawn without replacement from the population 1, 4, 6 and 7.
Compute the following;
a. Mean of the sampling distribution of the sample means
b. Variance of the sampling distribution of the sample means
c. Standard deviation of the sampling distribution of sample means
In an R-C circuit, a resistor, an uncharged capacitor, a dc battery, and an open switch are
in series. In an R-L circuit, a resistor, an inductor, a dc battery, and an open switch are in series. Compare the behavior of the current in these circuits (a) just after the switch is closed and (b) long after the switch has been closed. In other words, compare the way in which a capacitor and an inductor affect a circuit.
Two closely wound circular coils have the same number of turns, but one has twice the
radius of the other. How are the self-inductances of the two coils related? Explain your
reasoning.
5. Compute for the enthalpy, internal energy, and entropy of steam at 72oC and 93% quality. Please explain the answer?
#340153 on Dec 2023