Objects with masses m1=15.0kg and m2=6.0 kg are connected by a light string that passes over a frictionless pulley as in the figure below. Find the final speed of the blocks when the block m1 moves down a distance of 1.3 m. Assume that the system starts from rest. (Use conservation of energy)

Q: 2. A cylindrical metal can has a height of 27 cm and a radius of 11 cm. The electric field is…

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Q: ou are asked if you would like to have a box which contains 3.5 kmole of gold.. The condition of the…

A: Given Number of moles= 3.5 kmol = 3.5 × 103 mol MMolecular mass = 197 kg/kmol = 197 g/mol

Q: 3 Resonance and Quality Factor The quality factor Q of an oscillating system is a measure of how…

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Q: A mass spectrometer is a tool used to determine accurately the mass of individual ionized atoms or…

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Q: An 800 g ball is pulled up a slope as shown in the diagram. Calculate the potential energy it gains.…

A: Given Mass m = 800 g = 0.8 kg Height h = 20 cm = 0.2 m

Q: 1. The low-frequency speaker of a stereo set has a surface area of 0.05 m? and produces 1 W of…

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Q: How many electrons flow past through a certain cross-sectional area of a wire in 5.4 min, if a…

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Q: )A long, straight wire of radius R carries a steady current I that is uniformly distributed through…

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Q: (4) A current path shaped as shown in Figure produces a magnetic field at P, the center of the arc.…

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Q: Part A A 4.1-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely…

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Q: vectors in terms of its components and the corresponding unit vector and then verify the initial…

A: GivenA→=80 m, 23° S of WB→=25 m, 67° E of NC→=103 m, SD→=64 m, WE→=54 m, 286°

Q: Calculate the total resistance in the image below. R1 = 41 ohms R2 = 79 ohms R3 = 34 ohms

A: Given data:  Three resistors are connected in series R1 = 41 Ω, R2 = 79 Ω and R3 = 34 Ω Required:…

Q: • Part A ding wheel 0.33 m in diameter rotates at 2700 rpm . Calculate its angular velocity in…

A: Given Diameter = 0.33 m Radius r = d/2 = 0.33/2 = 0.165 m Frequency = 2700 rpm = 2700/60 rps = 45…

Q: Uniform Circular Motion. An athlete swings a ball, connected to the end of a chain, in a horizontal…

A: Given data:  Ball swings in an uniform circular motion ω1 = 8.00 rev/s  and r1 = 0.600 m ω2 = 6.00…

Q: A +80µC charge is placed at the origin. A -35µC is placed at x = 2m and a +170µC is placed at x=…

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Q: Two sine waves travel in the same direction in a medium. The amplitude of each wave is A and the

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Q: +Q -20 X = 0 X = 1 The electric field may be zero at approximately

A: charge +Q at x=0 charge -2Q at x=1 point at which net electric field is zero to be find out.

Q: 1. Consider two wave with wavefunctions, y1(x, t) = 4.00m sin(am¯1x – as-'t) and y2(x, t) = 4.00m…

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Q: Two current-carrying conductors are parallel to one another. The first wire has a current of 36 A…

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Q: A conducting bar of length , moves to the right on two frictionless rails as shown in Figure. A…

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Q: Define the equation that you will use to calculate the wavelengths. Express your answer in terms of…

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Q: 3. Determine the pressure exerted on the surface of a submarine cruising 175 ft below the fre…

A: Givenh=175 ftPatm=14.7 psiaSW=0.95

Q: A 38.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at…

A: The frequency of the sound wave is f=38.0 Hz The sound intensity level is L=60 dB The density of air…

Q: The sound waves travel with speed of 484 m/s. If is wavelength is 5 cm. Find the frequency of wave ?

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Q: a. Alpha decay: "C → yields 12

A: When alpha particle decays, the atomic number decreases by 2 and atomic mass decreases by 4.

Q: A tank of water has been outdoors in cold weather, and a slab of ice 4.1 cm thick has formed on its…

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Q: your work Jor 1. Equilibrium Revisited! Given the static system shown below, pinned at point, P:…

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Q: 4. 2500 m? to ft 5. 64 Ib/cm to kg/m? 6. 5000 milliseconds to seconds

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Q: A machine gun fires 15 bullets /s, each of mass 19 g the speed to each bullets is 28 cm-1, then…

A: Given data :     Mass of  each bullet   =  m     Number of bullets   =  N      Speed of each  bullet…

Q: 2cm Α 5cm 3cm Β 26μC 18µC

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Q: Part A A bar magnet is pushed toward a loop of wire as shown in the (Figure 1). Is there a current…

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Q: A tire loses 8% of its air every minute. I the tire initially had 65 pounds per square inch of air,…

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Q: A force of 343 N is applied to a hydraulic jack piston that is 0.0388 m in diameter. The second…

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Q: Vega is the fifth brightest star in the night sky. This bluish dwarf star has a radius of 0.810 x…

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Q: 1. A transverse wave on a string is modeled with the wave function: y(x,t) = (1.00 cm)sin(3.00m-x-…

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Q: A bag of wheat weight 320 kg .To what height should it be raised so that potential energy is 8460 J?…

A: Given data :    Potential energy  =  P•E    Mass of the bag   =  m  Acceleration due to gravity  =…

Q: A uniform spherical shell of mass M = 1.5 kg and radius R = 19.0 cm rotates about a vertical axis on…

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Q: What is the magnetic force on a proton moving at 7.0 x 10^8 m/s parallel to the 7.0 x 10^-2 T…

A: Given data:  Velocity (v) = 7.0×108 m/s Angle between velocity and magnetic field θ = 0° Magnetic…

Q: is 30.2 ye

A: Answer

Q: An object revolves uniformly in a circle of -1 Find its time

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Q: The temperature difference between the inside and the outside of a car engine is 450oC. Express this…

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Q: Solve for the total capacitance of the given network. (Express your answer in prefix form)

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Q: 1.5-V emf source has an internal resistance of 0.50 Ω. After it has been connected to a load with a…

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Q: 1. A body of mass m starts from rest down a plane of length I inclined at an angle e with the…

A: According to conservation of energy, work done by all the forces is equal to change in kinetic…

Q: Two current-carrying conductors are parallel to one another. The first wire has a current of 36 A…

A: For direction of magnetic field , we will use right hand thumb rule.

Q: After a fall, a 99 kg rock climber finds himself dangling from the end of a rope that had been 14 m…

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Q: How to manipulate  efficiency formula output/input energy x 100 to all the things it can be.

A: work efficiency formula is efficiency = output / input, and you can multiply the result by 100 to…

Q: B have masses me and my respectively. Neglecting friction between all surfaces, draw the FBD and KD…

A: Blocks A and B have masses

Q: A rickshaw puller pulls the rickshaw by applying a force of 120 N. If the rickaw moves with constant…

A: Given data:  Force (F) = 120 N Velocity (v) = 72 km/h Required: Power (P)

Q: The value of work done is 430 J and displacement is 35 m. Find the force applied ?

A: Given data :   Displacement  =  d   Work done  =  W        To find :           Force

Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.