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Divide the parabolic spandrel shown into five vertical sections and determinate by approximate means the x coordinate of its centroids; approximate the spandrel by rectangles of the form bdd'b'.
How can I determine the area of each rectangular section?
A 1500 kg mass is lowered 200 m and as it is lowered it runs a generator which lights a 100 watt light bulb.how long does the light bulb stay lit
A 740 kg spacecraft has total energy -5.3 * 10^11 J and is in circular orbit about the Sun. Find its orbital radius
A 150 MW laser pulse is focused with a lens to a diameter of 1.39 %u03BCm. What is the laser beam's electric field amplitude at the focal point
Consider a violin string with a vibrating length of 30 cm. If the speed of a wave on this string is 250 m/s, what is the tension in the string? Hint: You will have to estimate the diameter of the string. Assume the density is the same as that of s..
How much force does the astronaut exert on his chair while accelerating straight up at 12 m/s2
90 grams of water at 80°C are mixed with an equal amount of water at 20°C in a completely insulated container. The final temperature of the water is 50°C. How much heat is lost by the hot water
A certain satellite travels in an approximately circular orbit of radius 2.4 × 106 m with a period of 5 h 31 min. Calculate the mass of its planet from this information
A 0.0400 kg golf ball initially at rest is given aspeed of 35.0 m/s when a club strikes.If the club and ball are in contact for 2.00 ms, what average force acts on the ball
32 violins playing simultaneously with the same intensity combine to give an intensity level of 82 dB. a) What is the intensity level of each violin? (b) If the number of violins is increased to 64, will the combined intensity level be more than, les..
A "swing" ride at a carnival consists of chairs that are swung in a circle by 19.3 m cables attached to a vertical rotating pole, Find the speed of the chair
The press box at a baseball park is 36.0ft above the ground. What is the horizontal distance from the press box to second base
1 a mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 hz and an amplitude of 8.0 cm. if the
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