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- A wire of length L1=30cm has a fixed end and the other end is welded to another wire, whose linear mass density is 4 times smaller. The second wire passes over a pulley and a mass of 10kg is suspended from its other end.The distance L2 between the welding point and the pulley is 80 cm. A standing wave is produced in the composite wire, whose ends on the left wall and on the pulley remain fixed.If the frequency is as low as possible and there is a node at the weld spot, what is the number of nodes in this standing wave, including nodes on the left wall and on the pulley?a)3b)4c)5d)6e)7f)8g)9h)10i)11j)12k)13l)14m)15A wire of length L₁ = 30 cm has one end fixed and the other end welded to another wire, whose linear density of mass is 4 times smaller. The second wire passes through a pulley and a mass of 10 kg is suspended by its other end. The distance L₂ between the weld point and the pulley is 80 cm. A stationary wave is produced in the composite wire, whose ends at the left wall and the pulley remain fixed. If the frequency is as low as possible and there is one node (node) at the solder point, what is the number of nodes (nodes) of this stationary wave, including the nodes (nodes) at the left wall and the pulley? a. 3b. 4c. 5d. 6e. 7f. 8g. 9h. 10a. 11j. 12k. 13l. 14m. 15A sinusoidal wave on a string is described by the wave function y(x,t)=0.02sin(30x-400t). If the string's linear mass dinsity is 0.005kg/m, then the transmitted power is :
- A coil consists of 2000 turns of copper wire having a circular - section of diameter 2.5 mm. The mean length per turn is 80 cm and the electrical resistivity of copper is 0.02 μΩ–m. Determine the resistance of the coil.Use a system with a single degree of freedom to determine the fundamental natural frequency of the aircraft wing shown in Figure 6.32. If the average cross-section of the wing can be idealized as a hollow box 300 mm x 2000 mm with 2 mm thickness, as shown, and the wing is considered to be fixed to the fuselage at one end and free at the other, use E = 70 GPa and p = 2770 kg/m3.fine the ratio of impedances for reflected and transmitted for a 10 MHz soundwave propagating from fat to skull bone where impedance values for fat are 1.94 GPa and for skull bone is 31.9 GPa.
- Part (a) and (b) only Answer for (a): Radial interference = .00205 in Corresponding interface pressure= 13.3 kpsiIt is necessary to propose the design of the base of a Chiller that has a weight of 1.5 tons.The proposed structural element must have a natural frequency between 10 rad/s and 15rad/s.If you know that the beam linear attenuation coefficient for an attenuator is (0.597 cm-1), the beam second half- value layer is approximately
- The inner conductor of a coaxial cable has a diameter of 0.5 mm, an outer conductor an inner diameter of 6 mm and a length of 50 m. If the inner and outer conductors of the coaxial cable will be joined at one end of the cable, and if the permeability of the insulating material is µ = 4πx10^-7 H/m, what will be the inductance of the cable?Q1: A copper cable is 2 km long and has across-sectional area of 10 mm². Find its resistance at 80°C if at 20C the resistivity of copper is 0.02x10-6 2.m and its temperature coefficient of resistance is 0.004/•C.Consider a wedge that is 30 cm long and 8 cm thick. Wedge's attenuation is 0.3 /cm. Derive the equation and calculate the average transmission through this wedge.