What is the emf of the battery?

Q: "How far does a beam of light travel in 5.8 ×10-² s? Give your answer in Mm (106 m) as a two digit…

A: in this question we use simple velocity equation. .

Q: relat A climber exerts a force of 900N on a rope during an unexpected fall. Use the information…

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Q: As an object moves along the 26.0 m axis from = 0.0 m to z = 26.0 m it is acted upon by a force…

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Q: The magnetic field in a region is given by B = (0.750 +0.210) T. At some instant, a particle with…

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Q: A mass m = = 3 kg is attached to a spring with force constant k = 48 Nm-¹ and set into motion. The…

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Q: A fish floats inside a large fishbowl with radius of curvature R=2.00[m] and filled with freshwater…

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Q: Suppose a 26 mH inductor has a reactance of 95 Ω. What would the frequency be in Hz?

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Q: Q13) A 7.5 x 10'N upward tension force is exerted on a 521 kg downward moving elevator. The…

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Q: A brake is applied to a spinning flywheel, initially moving counterclockwise, causing it to slow…

A: Given: The magnitude of the angular acceleration is 5 rad/s2. The time interval is 4 s. The angular…

Q: The length of nylon rope from which a mountain climber is suspended has a force constant of 1.50 X…

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Q: "The current through a 81-9 resistor is I = (0.90 A) sin(200t), where t is measured in seconds. Find…

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Q: Problem 6: In the figure below a 0.001 kg bullet with initial speed v₁ = 1800 m/sec is fired into a…

A: CONCEPT:

Q: A thermal cycle has an efficiency equal to 45.0 % of that a Carnot engine that operates between the…

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Q: A 2800 kg cannon loaded with a 32 kg cannonball is at rest on frictionless level ground. The cannon…

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Q: In the figure, a particle moves along a circle in a region of uniform magnetic field of magnitude B…

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Q: A soap bubble is 115 nm thick and illuminated by white light incident perpendicular to its surface.…

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Q: In hypothermia, the body temperature is lowered due primarily to exposure to extremely cold weather…

A: Temperature is a variable that plays a crucial role in human's health and the diseases it suffers.…

Q: A 4 m tall pole is kept in front of a 2 m long vertical plane mirror. The mirror's lower portion is…

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Q: Oil in a tank has a specific gravity of 0.82. Determine the gage pressure at 3.75 m below the liqui

A: GivenSpecific gravity of oil, Soil=0.82Height below the liquid surface, h=3.75 m

Q: Two light sources are used in a photoelectric experiment to determine the work function for a…

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Q: -3 Find the frequency (in Hz) of a tuning fork that takes 7.20 × 10 s to complete one o

A: GivenTime period to complete one oscillation, T=7.2×10-3 s

Q: Detemine the horizontal and vertical forces on the pivoted point on the wall, as well as the tension…

A: Given:-  The  weight of the beam is 196 N  The weight of the person is 490 N  Find:-  Determine…

Q: The maximum magnetic field strength of an electromagnetic field is 4.5 × 10-6 T.  Calculate the…

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Q: Give an example of a trip you might take in your car for which the distance traveled as measured on…

A: To provide: An illustration of a journey demonstrating how the distance indicated by the car's…

Q: proof that AB will equilibrium if tan theta 1/tan 2 alpha Gb.1.69 Buktikan bahwa batang AB setimbang…

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Q: 50 moles of an ideal gas expands at 80 degrees Celsius from 370 L to 1,270 L isothermally. What is…

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Q: I have 2 identical conducting spheres one is neutral and the other has a charge of -3C, if they…

A: Given  one sphere is neutral and other has charge of -3 C.   Both conducting spheres are identical ,…

Q: A solid conducting bar is free to move across two ends of a conducting U shape of wire that are…

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Q: "A radio that can receive signals between 981 kHz (kilo-Hertz) and 1200 kHz. What is the longest…

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Q: A 518.0-nm light source illuminates two slits with a separation of 6.00 x 10-4 m, forming an…

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Q: 5. The motion of the shock absorber is modelled by the function, h(t) = e-0.5t sint. a) Identify the…

A: Given : h(t) = e-0.5tsint

Q: Consider a 27 mH inductor that has a resistance of 4.25 Ω.  Part (a)  What is the time constant, τ,…

A: Concept We have given a LR circuit, with inductance L = 27mH = 0.027 H , and resistance R = 4.25 Ω…

Q: What is the frequency for a waveleng meters? Show detailed calculation.

A: GivenWavelength, λ=2m

Q: Monochromatic light is incident on a pair of slits that are separated by 0.210 mm. The screen is…

A: We have a light which is incident on a pair of slits that are separated by a distance d=0.21…

Q: What is the lift (in newtons) due to Bernoulli's principle on a wing of area 87 m² if the air passes…

A: Given data wing of area A = 87 V2  =290ms V1= 180ms

Q: A circular coil of radius 0.66 m is placed in a time-varying magnetic field B(t) = (4.80 x 10-4) sin…

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Q: Q9) The average acceleration of the particle (in m/s) between t-0 and t-2 (s) is a. 6 b. 14 c. 8 d.…

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Q: A doctor examines a mole with a 16.5 cm focal length magnifying glass held 11.0 cm from the mole.…

A: a) Apply the mirror equation and substitute the required values to determine the image distance.

Q: 5. This problem is about charging a weak battery &, = 10.8 V with a good battery &,₁ = 12.0 V. Let…

A: Given: ε1=10.8 Vε2=12 Vr1=r20.02 ΩR=0.2  Ω

Q: A rope, under a tension of 153 N and fixed at both ends, oscillates in a second-harmonic standing…

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Q: B) A particle localized at point x.. Determine its wave function in and momentum representations.…

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Q: Transverse waves are sent along a 5.40 m long string with a speed of 93.00 m/s. The string is under…

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Q: The figure below shows light reflecting off two mirrors (M₁ and M₂) that are at right angles to each…

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Q: The motion of a mass on a spring hung vertically, where the mass oscillates up and down, can also be…

A: Solution:-

Q: 14) An electron is initially moving to the right when it enters a uniform electric field directed…

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Q: The plates of an empty parallel-plate capacitor of capacitance 8.0 pF are 7.0 mm apart. What is the…

A: The capacitance of a parallel plate capacitor is given by the expression C=εoAdA is the plate aread…

Q: 2. Light with a wavelength of 612 nm incident on a double slit produces a second order maximum at an…

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Q: A 1.5kg rock is tied to the end of a 1.25m string and is swung in a vertical circle at a constant…

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Q: Two point charges, Q = +5.40 μC and q = -4.20 μC, are separated by 5.0 m. What is the electric…

A: Given Q = +5.40 μC  q = -4.20 μC  seperation (d) = 5 m  Electric potential energy is goy as :-  U =…

Q: 1) As shown in the figure, a bimetallic strip, consisting of metal G on the top and metal H on the…

A: Curved downward ( SO option C is correct)

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.