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A large wrecking ball is held in place by two light steel cables (Fig. 5.43). If the mass m of the wrecking ball is 4090 kg, what are
(a) The tension TB in the cable that makes an angle of 40° with the vertical and
(b) The tension TA in the horizontal cable?
A microwave oven operating at 2.5 GHz has a power output of500 W. what is the wavelength of the microwaves
A pipe tapers out from an initial area A1 = 6.6x10-2 m2 to a final area A2 that is nine times as large over a distance d = 0.4 m. Water enters from the left in a steady volumetric flow of 300 liters/second and initial gauge pressure 17 kPa . Find ..
Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s
What is the magnification of an astronomical telescope whose objective lens has a focal length of 71 cm and whose eyepiece has a focal length of 2.1 cm
Determine the required value of L. Determine the required value of C. Find the maximum value of the ratio ΔVout/ΔVin. Find the frequency f0 at which the ratio has its maximum value.
a spacecraft engine creates 55.1 mn of thrust with a propellant velocity of 4.88 kms. a find the rate dmdt at which the
A bullet is fired through a board that is 15.0 cm thick. The bullet moves along a direction perpendicular to the board. find the bullet's acceleration as it passes through the board
A rowboat crosses a river with a velocity of 3.67 mi/h at an angle 62.5° north of west relative to the water. How far upstream is the boat when it reaches the opposite shore
A 4.00 kg mass is connected to a spring with a spring constant of 9.00 N/m. find the maximum velocity of the simple harmonic motion
A wire is 1.50 m long and has a diameter of 1.5. The tensile modulus of the wire is 6.20 x 10^10 N /m. what is the increase in length of the wire
A g215 g sample of a substance is heated at 330 degree celcius and then plugged into 105 aluminum calorimeter cup containing 165 g of water and a 17 g glass thermometer at 125 degree C. the final temperature is 35 degree C. what is the specific heat ..
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. A -50nC charge is placed at the position ( 2m, 3m ) and fixed in place. What are the components of the total electric field at the location (..
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