Classify each of the changes as a physical change or a chemical change. a. a block of ice melts b. a chemistry book is burned c. a dry leaf is crushed d. grass in the yard is cut e. an iron nail rust #PhysicalChange #ChemicalChange #Physics #Chemistry

The micrograph above gives an estimate of the volume fraction of the α phase to be 60%. As the density of Aluminum and Silicon are similar, we can estimate the wt% of α to also be 60%. With reference to the Al-Si phase diagram, estimate the composition of the alloy in terms on wt% Si #PhaseDiagram #Eutectic #PhysicsHelp #Physics

Physics Help: Phase Diagrams: Between which phase fields is the solidus, liquidus, solvus phase #Solidus #Liquidus #Solvus #LeverRule

Physics Help: Match the microstructures to the average carbon content ranges of the specimens

What phases will most likely be present in the solid formed from cooling a melt of composition: 90 wt% Mg - 10 wt% Pb at a moderate rate? #PhysicsHelp #PhaseDiagram #Techniques #Solutions

Physics: Phase Diagrams: Which phases are in equilibrium at 1000C for nominal composition 30% B? #PhysicsHelp #PhaseDiagram #Diagram #Techniques

Physics Help: Phase Diagrams: What reaction occurs at point b, f, i, l, o? - Three phase reactions #PhaseDiagrams #ThreePhaseReactions #PhysicsHelp

The microstructure of an Al-Si alloy contains 12 wt% eutectic and 88 wt% proeutectic , what is the composition of the alloy in wt% Si units? Assume the room temperature microstructure is the same as the phase/microconstituent content just below the eutectic temperature. #PhysicsHelp #PhaseDiagrams #Techniques

A 2.0 kg mass is rotating on a circular path with a radius of 30 cm. If the speed of the mass is 2m/s , what is its angular momentum? #PhysicsHelp #AngularMomentum #Physics

Physics Help: a. Write the mesh equations for the network of Fig. 8.122 using the general approach #MeshEquations #MeshAnalysis #Physics

#NodalAnalysis #Physics #Electrical

A 0.260-kg block along a horizontal track has a speed of 1.40 m/s immediately before colliding with a light spring of force constant 5.15 N/m located at the end of the track. (a) What is the spring’s maximum compression if the track is frictionless? (b) If the track is not frictionless, would the spring’s maximum compression be greater than, less than, or equal to the value obtained in part (a)?

The horizontal pipe shown has a cross-sectional area of 40 cm^2 at the wider portions and 10 cm^2 at the constriction. Water is flowing in the pipe, and the discharge from the pipe is 6x10-3 m3/s. Find (a) the flow speeds at the wide and narrow portions; (b) the pressure difference between these portions; (c) the difference in height between the mercury columns in the U-shaped tube #Bernoulli #Equations #Calculus #Physics #Pressure

Here is the technique to solve the question related to Coulomb's Law #CoulombLaw #Techniques #PhysicsHelp

Here is the technique to solve this question and how to find them in step-by-step #Techniques #Solutions #Answers #Formula #Physics #Magnitude #ResultantForce

Here is the technique to solve the question related to conservation of momentum and how to find them in step-by-step #Momentum #Conservation #Physics

Here is the technique to find the Work = Force x Displacement based on the chart and how to find them in here #Work #Force #Displacement #Area #Triangle #Physics

Here is the technique to use the Kirchhoff's Current Law to solve the question #Kirchhoff #KirchhoffCurrentLaw #Physics

The figure below shows two blocks connected to each other by a light cable that passes over a pulley with negligible friction. The block of mass m1=5.4 kg lies on a horizontal table with negligible friction, while the block of mass m2=10.3 kg hans vertically. a) What is magnitude of the acceleration of each block ? b) What is the tension in the cable? #PhysicsHelp #Cable #Tension #Newton #Gravity #Mass #Pulley

An elevator cab that weighs 24.8 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.33 m/s^2? and (b) decreasing at a rate of 1.33 m/s^2? #PhysicsHelp #SecondLaw #Newton

This is the physics about how height and how far for the object

Here is the technique to solve this question about Physics and Resultant of the wind and the flght Full question: he magnitude of a velocity vector is called speed. Suppose that a wind is blowing from the direction N45°W at a speed of 40 km/h. (This means that the direction from which the wind blows is 45° west of the northerly direction.) A pilot is steering a plane in the direction N60°E at an airspeed (speed in still air) of 100 km/h. The true course, or track, of the plane is the direction of the resultant of the velocity vectors of the plane and the wind. The ground speed of the plane is the magnitude of the resultant. Find the true course and the ground speed of the plane. (Round your answers to one decimal place.)

Here is the technique to prove about this one: Physics Help: Prove: V RMS = V Peak/ sqrt(2) ; Voltage Root Mean Square = Voltage Peak / Sqrt(2) #Physics #Electronics #Peak

Here is the technique to apply the Supermesh and how to find them in here with step-by-step