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Ramosa Nkgweng

Ramosa N.

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Benjamin Densmore verified

Numerade educator

how are you

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Timothy James verified

Numerade educator

Gauss's Law states that the net electric flux, ?E?路dA? = ?_E through any closed surface is proportional to the charge enclosed: ?E?路dA? = q_enc/?? The analogous formula for magnetic fields is: Select one: ?B?路dA? = -d?_B/dt ?B?路dA? = q_enc/?? ?B?路dA? = I/???? ?B?路dA? = 0 ?B?路dA? = I/??

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Nishant Kumar verified

Numerade educator

Consider the circuit shown in Figure P32.19. When the switch is in position a, for what value of R will the circuit have a time constant of 15.0 ?s? 1.29 k? What is the current in the inductor at the instant the switch is thrown to position b? 72.0 mA

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Vishal Gupta verified

Numerade educator

An RLC series circuit has a 40.0 ? resistor, a 3.00 mH inductor, and a 5.00 ?F capacitor. If the source has a frequency of 60.0 Hz and amplitude of 120 V, determine: Capacitive reactance of the capacitor Under this given condition, which of the following condition is true Under this given condition, the circuit is Inductive reactance of the inductor Maximum current of the circuit Phase angle of the circuit Impedance of the circuit angular frequency of the source?

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Timothy James verified

Numerade educator

The magnetic flux through a loop perpendicular to a uniform magnetic field will change Select one: a. if the loop moves at constant velocity in a direction parallel to the axis of the loop while remaining in the uniform magnetic field. b. if the loop is replaced by two loops, each of which has half of the area of the original loop. c. in none of the above cases. d. if the loop is rotated through 180 degrees about an axis through its center and in the plane of the loop. e. if the loop moves at constant velocity while remaining perpendicular to and within the uniform magnetic field. Question 3 A metal blade spins at a constant rate of 5.0 revolutions per second about a pivot through one end of the blade. This rotation occurs in a region where the component of the earth's magnetic field perpendicular to the blade is 30 ?? T. If the blade is 60 cm in length, what is the magnitude of the potential difference between its ends? Select one: a. 0.20 mV b. 0.27 mV c. 0.34 mV d. 0.17 mV e. 0.24 mV

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Timothy James verified

Numerade educator

With reference to the below figure, what would be the approximate amplitude of the signal at the output? Select one: a. none of the above b. 125mV c. 500mV d. 250mV e. 1V

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Sheryl Ezze verified

Numerade educator

70 lorries; Distance travelled by each during a particular week Data set 10; 12; 36; 56; 57; 36; 27; 32; 57; 20; 15; 50; 49; 46; 21; 69; 55; 42; 60; 45; 35; 47; 22; 45; 44; 31; 67; 43; 17 54; 49; 56; 51; 55; 29; 65; 23; 55; 46; 66; 40; 63; 24 35; 60; 58; 15; 57; 64; 37; 38; 48; 27; 28; 59; 25; 52 47; 26; 63; 30; 31; 31; 34; 65; 41; 16; 28; 39; 46

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Sheryl Ezze verified

Numerade educator

10)A large transport firm had 70 lorries in different parts of the country. The distance traveled by each lorry during a particular week is recorded in the table below. a) Construct a frequency distribution table by using the following column headings: egin{tabular}{|c|c|c|c|} hline Class $i$ & Score & Tally & $f_i$ \ hline 1 & [10; 20) & & \ hline 2 & [20; 30) & & \ hline $vdots$ & $vdots$ & & \ hline end{tabular} b) Construct an expanded frequency distribution table by adding columns for the class marks ($x_i$); cum $f_i$; rel $f_i$ (%) and cum rel $f_i$ (%). c) Construct a frequency polygon and a histogram on the same graph (use graph paper). Comment on the shape of the data distribution. d) Determine the mode from a construction on the histogram as well as by using a suitable formula. Interpret the result in the context of the problem. e) Calculate the median, the first quartile and the third quartile and interpret the three results. f) Calculate the arithmetic mean, the standard deviation and the variance of the population g) If the observations had been for a sample of lorries from the transport firm's fleet, recalculate the arithmetic mean, standard deviation and the variance.

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Nishant Kumar verified

Numerade educator

A single circular (radius = R) loop of wire is located in the yz plane with its center at the origin. The loop has a clockwise current as seen from the point (+R, 0, 0). The direction of the magnetic field at the point: None of the above (0, 0, 0) is +i and at the point (+R, 0, 0) is +i (0, 0, 0) is +i and at the point (0, +2R, 0) is +i (0, 0, 0) is -i and at the point (0, +2R, 0) is -i (0, 0, 0) is -i and at the point (+R, 0, 0) is -i

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Nishant Kumar verified

Numerade educator

When the capacitor is fully charged by the 1.5 V battery, the voltage across the capacitor will be? Select one: a. Not easy to tell b. More than 1.5 V c. Equal to 1.5 V d. Less than 1.5 V e. Equal to zero

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