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a) Calculate the electrical energy utilized by a household whose monthly electrical bill is $44, computed at the rate of $0.07 per kWh.
b) How long could this energy be used to burn ten 12 W light bulbs?
c) If this energy were utilized to raise a car of mass 2115 kg, to what height would the car be raised?
A 1.8 hp electric motor provides a force of 382 N to maintain a constant speed for a long rope attached to a pulley lifting a bucket of coal from a mining shaft
1.7 kilograms of water are changed from liquid water at 100?C into steam at 100?C. determine the change in mass of the water
Capacitors C1 = 5.60 µF and C2 = 2.45 µF are charged as a parallel combination across a 250 V battery, Calculate the resulting charge on each capacitor
On a hot summer day, a young girl swings on a rope above the local swimming hole (Figure 1) . When she lets go of the rope her initial velocity is 2.20 at an angle of 35.0 above the horizontal.If she is in flight for 0.619 , how high above the water ..
Two bars of identical mass are at 32 °C. One is made from glass and the other from another substance. The specific heat capacity of glass is 840 J/(kg · C°).
Three long, parallel, straight wires pass through the vertices of an equilateral triangle that has sides L = 11.6 cm, as shown in the figure below. A a dot indicates that the direction of the current is out of the screen and a cross indicates that..
The propeller of a light plane has a length of 1.752 m and a mass of 19.96 kg. The rotational energy of the propeller is 158.6 kJ. What is the frequency of the propeller in rpm
Electronic flash units for cameras contain a capacitor for storing the energy used to produce a flash. In one such unit the flash lasts for 0.00129 s with an average light power output of 1,657 W.
A type of transmission line for electromagnetic waves consists of two parallel conducting plates (assumed infinite in width) separated by a distance a. Each plate carries the same uniform surface current density of 16.0 A/m, but the currents run i..
To correct myopia, is it necessary to move the image formed by the eye closer to or farther from the eyes lens system, Is the curvature of this lens concave or convex
What angular acceleration is necessary to increase the angular speed of a fan blade from 8.9 rad/s to 15.7 rad/s in 5.4seconds? answer in units of rad/s2
Illustrate what management's role in addressing these challenges. Illustrate what type of information technology would increase production?
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