4(5n-7)=10n+2?

4(5n-7)=10n+2?
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n=3
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4(5n-7)=10n+2?

Description : 4(5n-7)=10n+2?

Last Answer : n=3

A vibrating system having mass 1kg, a spring of stiffness 1000N/m and damping factor of 0.632 and it is put to harmonic excitation of 10N. Find the amplitude at resonance. A 0.079 B 7.9C 0.056 D 0.00791

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Description : If A -3n plus 2 and B 5n - 7 what is the value of A - B in simplest form?

Last Answer : A - B = -3n + 2 - (5n - 7) = -3n + 2 - 5n + 7 = 9 - 8n

A spring-mass system has a natural frequency of 10 rad/sec. When the spring constant is reduced by 800 N/m, the frequency is altered by 45 percent. Find the mass and spring constant of the original system. a)11.47kg and 1147.95N/m b)8.95kg and 895.25N/m c) 7.265kg and 726.5N/m d)None

Description : A spring-mass system has a natural frequency of 10 rad/sec. When the spring constant is reduced by 800 N/m, the frequency is altered by 45 percent. Find the mass and spring constant of the original system. a)11.47kg and 1147.95N/m b)8.95kg and 895.25N/m c) 7.265kg and 726.5N/m d)None

Last Answer : a)11.47kg and 1147.95N/m

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Description : What is 10n 40?

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Last Answer : (2) 2N Explanation: Weight is mass x g. Since mass is constant and g is only 16thof that on the earth. The weight on the moon is only 16th of that on the earth.

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Description : Determine the equivalent spring constant of the system shown in FigK1=10 N/m, K2=20 N/m. K3=30 N/m, K4=34 N/m, K5=40 N/m a) 10N/m b)20N/m c)30N/m d) None

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Description : what is the verbal description for 100-5n?

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A muff coupling is connecting two shafts. The torque involved is 650N-m. The shaft diameter is 45mm with length and height of the key being 14mm and 80mm respectively. Find the compressive stress induced in the key. a) 70.1 N/mm2 b) 51.6N/mm2 c) 45.5N/mm2 d) None of the listed

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If P is the number of vehicles per day at last census, r is the increase in traffic and n is the number of years passed after last census, number of vehicles A per day for design, is (A) P (1 + r)n (B) P (1 - r)n (C) P (1 + r)-n+5 (D) P (1 + r)5n

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The effective depth of a singly reinforced rectangular beam is 300mm. the section is over-reinforced and the neutral axis is 120mm below the top. If the maximum stress attained by concrete is 5N/mn2 and the modular ratio is 18, then the stress developed in the steel will (a) 130N/mm2 (b) 135N/mm2 (c) 160N/mm2 (d) 180N/mm2

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