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A radio antenna broadcasts a 1.0 MHz radio wave with 29kW of power. Assume that the radiation is emitted uniformly in all directions.
What is the wave's intensity 33km from the antenna?
(a) Find the slip at the maximum developed torque. (b) If we would like to get the maximum torque at starting (s=1), a method is to add more resistance to the rotor, R2,new=R2,old + Rextra, while the rotor reactance X2 stays the same.
If sales increase 25%, EBIT increases 50%, debt increases 75%, and working capital increases 12.5%, what is the degree of operating leverage?
A spring with spring constant 15N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. What is its the mass of the ball
A $1000 par value bond issued by XYZ Company has 16 years to maturity.The bond pays $78 per year in interest and is currently selling for $880.00.
The motor gives the output torque of 20 N-m at the rated speed. The mechanical losses are equal to 1kW. The stator losses are 1.5kW. Find the input current of the motor, given that the power factor is 0.8
Sun Instruments expects to issue new stock at $34.00 per share with estimated float costs of 7% of market price.The company currently pays a $2.10 cash dividend and has a 6% growth rate. What are the costs of retained earnings and new common stock..
The two stars in a binary star system have masses 2.3x1030kg and 5.5x1030kg. They are separated by 1.5x1012m. What is the speed of the lightest star
The variance of Stock A is .005, the variance of the market is .008 and the covariance between the two is .0026. What is the correlation coefficient?
Discuss how Blogs and Social Networking have altered our daily usage of the internet and the World Wide Web.
Determine the NPV for both projects using a cost of capital of 13% 2. Determine the NPV for both projects using a cost of capital of 8% 3. At an 8% discount rate, which project should be accepted? at 13% discount rate, which project should be acce..
Three resistors, 27, 49, and 79 ?, are connected in series, and a 0.51-A current passes through them. What is the potential difference across the three resistors
suppose a uniformly charged ring in the xy plane, centered at the origin. The ring has radius a and positive charge q distributed evenly along its circumference.
A 525-? resistor, an uncharged 1.50-µF capacitor, and a battery with an emf of 6.31 V are connected in series, What is the current after one time constant
The circular top of a can of soda has a radius of 0.029m. The pull-tab has an area of 4.13 10-4m2. The absolute pressure of the carbon dioxide in the can is 1.4 x10^5Pa. Find out the force that this gas generates.
A skier of mass 73 kg is pulled up a slope by a motor-driven cable, What power (expressed in hp) must a motor have to perform this task
One of the tenets of the pseudoscience (i.e., "false science") of astrology is that, in some mysterious way, the positions of the planets at the time of the person's birth somehow influence the characteristics of that person.
An elastic cord is 66 cm long when a weight of 66 N hangs from it but is 86 cm long when a weight of 76 N hangs from it. What is the "spring" constant k of the elastic cord.
Determine the value of the electric potential. calculate the acceleration of the ball when it is 3 cm from the surface and again at the position determined in part b.
An object with a mass of m = 5.3 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.255 m and mass of M = 3.00 kg, Determine the speed with which the object hits the floor
Two stationary positive point charges, charge 1 of magnitude 3.80 and charge 2 of magnitude 1.95 , are separated by a distance of 38.0 . An electron is released from rest at the point midway between the two charges.
The cord is after that pulled from below, shortening the radius of the circle in which block revolves to 0.15. Model the block as a particle.
Two ocean liners, each with a mass of 40,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Care for the ships as ..
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