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The distance between two successive crests in a wave is 1.25 m, and the source generates 15 crests in 5.0 s. What is the speed of the wave?
A ship with a mass of 52 000 metric tons is capable of producing a thrust force of 25 800 kN while a total resistive force of 5 000 kN is against it, what is the acceleration of the ship? *
a ship leaves a port on a bearing of 30 degrees and travels 2201 Nautical miles, NM and then turns due north and travels 8977 NM. . What is the ships bearing from the port? *
How much load is needed to elongate a steel wire to 0.5 %of its original length ? The diameter of the wire is 2mm and youngest modulus of the material of the wire is 20×10^10 N/m^2
259L oil of compressibility k=20×10^-6 atm^-1is subjected to a hydraulic press. Find the decrease in the value of the oil when it is subjected to pressure 1.6×10^7
An object that is 15 cm tall is placed 18 cm from a concave mirror. The real image is formed 20 cm from the mirror. What is the focal length of the concave mirror? Use the formula: f = dodi/do +di
Two parallel straight wires 53.0 cm apart carry currents in opposite directions. Current = 10.0 A is out of the page, and /2 = 8.0 A is into the page. Determine the magnitude and direction of the magnetic field halfway between the two wires.
A piano of mass 350 kg moved up a rough plane which is inclined to the horizontal ground at 25° as shown in Figure 3. It is pushed by a man with force of magnitude 1700 N parallel to the plane. The coefficient of frictional force for the surface is 0.30. After the piano has moved through 3.5 m, calculate the work done by each force acting on the piano and the net work done on the piano.
Find the moment of inertia about the central axis of a disk of radius R and total mass M
Typical backyard ants often create a network of chemical trails for guidance. Extending outward from the nest, a trail branches (bifurcates) repeatedly, with 60° between the branches. If a roaming ant chances upon a trail, it can tell the way to the nest at any branch point: If it is moving away from the nest, it has two choices of path requiring a small turn in its travel direction, either 30° leftward or 30° rightward. If it is moving toward the nest, it has only one such choice. Given figure shows a typical ant trail, with lettered straight sections of 2.0 cm length and symmetric bifurcation of 60°. Path “v” is parallel to the y axis. What are the (a) magnitude and (b) angle (relative to the positive direction of the superimposed x axis) of an ant’s displacement from the nest (find it in the figure) if the ant enters the trail at point A? What are the (c) magnitude and (d) angle if it enters at point B? Nest is located at the end of the segment “w”.
