Why is the voltage of 2 cells the same, while the amperage is different? One half-cell has salt bridge while the other has a porous cup (higher amperage one).

Q: A magnetic field B = 1.30 x 10^ -3 T is measured a distance of 3.0 cm from a long straight wire.…

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Q: A ray of light hit a body of water at an angle of 45 degrees with respect to the normal. What is its…

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Q: A 1.5 nC particle with an initial velocity of 4.75x106 m/s along the positive x-axis enters a region…

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Q: A wheel with rotational inertia 0.80 kg m2 has initial angular speed 7.0 rad/s. It slows to a stop…

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Q: (a) What current is needed to transmit 250 MW of power at 400 kV? (b) What is the power dissipated…

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Q: w on a table such that it exerts the smallest pressure against it?.

A: We know that the formula of the pressure is given as  P = FA where F is the force  A is the…

Q: Two strips of aluminum foil, separated by a strip of paper 0.070 mm thick with dielectric constant…

A: Hi. as you have posted multiple questions and have not specified which question needs to be solved,…

Q: An object is thrown vertically upward. It has a speed of 32ft/sec when it has reached one- half its…

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Q: What is the equivalent resistance of a 3.0 resistor and a 6.0 resistor connected in parallel

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Q: s2 , where s is in equation meters. Solve the velocity of the particle at s = 8m if the velocity of…

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Q: A resistor, an uncharged capacitor, a dc voltage source, and an open switch are all connected in…

A: Let the voltage of the dc voltage source = V let the current = I Let the resistance of the resistor…

Q: A person that has a mass of 83 kg stands in the middle of a frozen pond with a radius of 11 m.…

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Q: A car is moving on a straight road 17 m/s. It is acceleration at 28 m/s? . What will be it's…

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Q: ( =10 radA B. 0.05 m 0.15 m Given: Gear A is given an angular acceleration a- 4t rad/s², where t is…

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Q: A grandfather clock has a pendulum that consists of a thin brass disk of radius r and mass m that is…

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Q: A 36.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of…

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Q: Do you think that push-ups (pushing your body weight up from the floor) or shoulder press (pushing…

A: Yes, Push-ups and shoulder press will do a better job of helping you build muscles.

Q: Find the total distance a pendulum bob travels before it come to rest if it swings 9 cm on its first…

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Q: Consider a thermometer in Fahrenheit scale and Celsius scale, both thermometers are immersed in a…

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Q: Find the valur of force applied if work done is 320 J and displacement is 23 m

A: Given data :                     Displacement    =    d                    Work done     =    W…

Q: A plano-convex lens is made up of glass with an index of refraction equal to 1.5. Its curved surface…

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Q: A flat uniform circular disk has a mass of 2.50 kg and a radius of 95.0 cm. It is suspended in a…

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Q: P.Rho. A satellite of mass 300 kg, drag coefficient 2.0, and cross-sectional area 5 m2 orbits at an…

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Q: What if the actual work done (more realistically) is W = 320 J during a single cycle; what is the…

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Q: A temperature increase of 20 C° is the same as a temperature increase of a) 32 F°. b) 293 K. c) 273…

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Q: Activity 1. Use ray diagrams to find the image position and magnification for an object at each of…

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Q: A building is 60 m tall. A student wishes to drop a tomato from the top of the building onto the…

A: Given Height of the building is h=60 m Speed of the professor is v=1.7 m/s

Q: In the figure, two long straight wires at separation d = 16.2 cm carry currents of iz = 2.58 mA and…

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Q: You throw the pebble and it lands 5 yards away from you. Again, ignoring air resistance, do you see…

A: In this question we have to explain the fall of a pebble thrown, which lands at distance of 5 yards.…

Q: CONVERGING LENS  1.Where does the image of the letter “A” appear? 2. Is the image of the letter A…

A: Solution:- 1) A ray of light passing through the optical center of a convex lens passed without any…

Q: The circuit below includes a battery, four identical lightbulbs, and a switch (which is closed).…

A: Given,

Q: One long wire lies along an x axis and carries a current of 54 A in the positive x direction. A…

A: Magnetic field due to the wire on the x-axis is calculated as follows:      B = µ0I/2*pi*r…

Q: A cylindrical water tank 6 meters high with a radius of 2 meters is buried so that the top of the…

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Q: A potential energy function for system 1 is given by U1(x) = Cx2 + Bx3. The potential energy…

A: By definition of force  F = -dU/dx

Q: 8. B up, I to the –x. 9. F down, B to the right. 10. F out of the screen, I to the left.

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Q: Which, if any, of the following statements concerning the work done by a conservative force is NOT…

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Q: At a playground a kid of mass 70.0 kg stands at the center of a rotating “merry-go-round” with…

A: Mass of kid (m) = 70 kg Initial angular  speed (ωi) = 1.5 rad/s Moment  of inertia  of…

Q: gravitational force net force 3 1-.1J f the block started from rest, what is its speed after being…

A: Work done = FS Cosθ  where θ is the angle between force and displacement .

Q: The nuclide 10,4 Be undergoes spontaneous radioactive decay to 10,5 B with emission of a beta…

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Q: Aside from being transparent, why are laboratory apparatus such as graduated cylinder, beakers, and…

A: There are mainly two advantages which leads us to use glass apparatus.   1) They are transparent so…

Q: Radioactive particles moving at 0.80 c are measured to have a half-life of 4.3 x 10-8 s. What is…

A: Given : Velocity (V) = 0.80 C  Half life ( ∆t) = 4.3 x 10-8 s

Q: in one optical instrument, what is the effect of using two diverging lenses?

A: Given : Asked what is the advantage of using two diverging lenses in one optical instrument.

Q: A 506 N was applied to a 209 kg block, find the normal force if the angle 0 = 37.5 degrees. F

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Q: 6. A man wants to shoot an arrow so that it has the greatest range (horizontal distance). At what…

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Q: Two cars leaves the same city at the same time traveling at right angles with respect to each other…

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Q: A highway curve is super elevated at 7deg. Find the radius of the curve if there is no lateral…

A: Given: Velocity (V) = 40 mph = 17.8816 m/s Angle (  θ) = 7°

Q: Which Electromagnetic Wave has the largest amount of energy per photon? A) gamma rays B infrared…

A: frequency of gamma rays is maximum and energy is directly proportional  to frequency

Q: Four identical resistors are connected in series to a 12-V battery. What is the voltage across any…

A: Let resistance of each resistor is R  since they are in series , equivalent of all four  Req =…

Q: A particle with a charge of -1.24 x 10^-8 C is moving with instantaneous velocity v = (4.19x10^4…

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Q: A football player kicks a ball with an initial velocity of 18 m/s at an angle of 32o above the…

A: Write the given values with the suitable variables. u=18 m/sθ=32°d=28 m Here, u is the initial…

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.