The 215 A current through a spark plug moves 0.280 mC of charge. How long does the spark last? μS

Q: Was the equation for spectral power per wavelength derived from other equations? If so, which ones?

A: Was the equation for spectral power per wavelength derived from other equations? If so, which ones?

Q: The work done by an electric force in moving a charge from point A to point B is 1.24 x 10-3 J. The…

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Q: what is the electric charge in micro coulomb 5 x 10^14?

A: There are two types of charges, they are positive and negative. The SI unit charge is Coulomb. The…

Q: A crate with mass m = 24 kg is being pushed up an incline that makes an angle φ = 18.7 degrees with…

A: Givenmass, m=24 kgangle, ϕ=18.7 degforce, P=460 Ncrate start from restfinal speed, v=4.8…

Q: An electric drill starts from rest and rotates with a constant angular acceleration. After the drill…

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Q: The magnetic field inside an air-filled solenoid 40 cm long and 2.8 cm in diameter is 0.74 T. Part A…

A: Given data: The length of the solenoid is l=40 cm=0.40 m The diameter is d = 0.028 m The magnetic…

Q: Find the number of turns a solenoid coil with length of 0.06 m should have in order to produce a…

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Q: The answer is incorrect, would there be another way for figuring this out? Thank you.

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Q: Suppose a plane-polarised light wave is travelling in the z  direction, its electric field vector E…

A: Given Plane-polarised light wave is travelling in the z direction. Electric field vector E is in x…

Q: (a) What are the units of resistivity (in terms of the fundamental units of kg, m, s, C)? (b) What…

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Q: Which UNIT will the answer to this operation have? (We're only interested in the units, not the…

A: The operation have expression =                                     5 m  +  2 Kg here,…

Q: IP As you ride on a Ferris wheel, your apparent weight is different at the top than at the bottom.…

A: While riding on a Ferris wheel, one may notice that their apparent weight changes depending on their…

Q: Problem 24.01. If you wish to detect details of the size of atoms (about 1×1010m) with…

A: to detect the details , the wavelength of wave must be comparable tothe size of atomwe can…

Q: How fast is it moving 4s later?

A: Given: Initial velocity of ball is u=6 m/s Ball is thrown downward. Find: (a) Velocity of ball at…

Q: Problem 24.03. (a) Two microwave frequencies are authorized for use in microwave ovens: 900 and 2560…

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Q: Problem 2 (Electrical potential) Two spheres with radius R1 and R2 are grounded, see Fig. A charge q…

A: Given:Radius of smaller sphere: R1Radius of larger sphere: R2Distance between center of spheres and…

Q: - In the diagram below, a toy car having a mass of 4.00 x 10-2 kilogram starts from rest at point A…

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Q: 3. Why we use He-Ne laser to track the path of invisible laser like Nd:YAG laser?

A: He-Ne (Helium-Neon) lasers are often used as a reference or alignment laser because they emit a…

Q: A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the…

A: Given that: Radius of the circle, r=2.3 cmLength of the string, L=74 cmAngular acceleration, α=+13…

Q: ray of monochromatic light travelling in air strikes the end of a 21 cm wide block of Plexiglas at…

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Q: A student holds a tuning fork oscillating at 256 Hz. He walks toward a wall at a constant speed of…

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Q: (a) Two point charges totaling 8.00 µC exert a repulsive force of 0.150 N on one another when…

A: Given Two charges say q1 and q2 Total of charge q = q1 + q2  = 8 x10-6 C Force between  F = 0.15 N…

Q: There is a small sphere of mass m at a height H, from the center of a uniform ring of radius R and…

A: The mass of the sphere is m. The height of the sphere is H. The mass of the ring is M. The radius of…

Q: Particle B has an initial velocity of zero. Given its acceleration vs time graph, solve for the…

A: Acceleration of B at t=3.3 s

Q: (b) (c) From the graph, estimate the total change in momentum experienced by the projectile, due to…

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Q: QUESTION 21 R 7 m = 2 kg Question: What is the speed of the stone? O 18 m/s Ob9 m/s 02 m/s Od 3 m/s…

A: Given data: Mass of the stone, m=2 kg Radius of the circle, r=1 m Centripetal acceleration of the…

Q: A LaGuardia Physics Professor is in the front row at a concert of Grateful Dead rock band, he is 4.2…

A: β1 = 131 dB r1 = 4.2 m (initial distance )

Q: A solid uniform cylinder of radius R is wrapped with very thin (assume massless) string and i…

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Q: You have an oxygen nucleus (charge 8e) and a distance of 7.3 x 10-6 m. a) What is the electric…

A: Electric potential: If V is the electric potential at a point, q is the test charge and W is the…

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Q: Review Conceptual Example 2 before attempting this problem. The moon has a diameter of 3.48 x 106 m…

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Q: An electromagnet works because OA) each atom has moving charge (orbiting electrons) - and moving…

A: An electromagnet is a magnet whose magnetic field is generated by using electricity. A permanent…

Q: The red curve shows how the capacitor charges after the switch is closed at t = 0. Which curve shows…

A: Kirchhoff's Voltage Law (KVL): It states that the sum of all voltages around any closed loop in a…

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Q: potential energy for each case and briefly explain why.

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

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Q: The diagram shows the various positions of a child in motion an Somewhere in front of the child a…

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Q: Two traveling pulses on a rope move toward each other at a speed of 1.0 m/s. The waves have the same…

A: Given: Two travelling pulses on a rope move toward each other at a speed of 1.0 m/s. The waves have…

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Q: 4. A projector has a 0.010m tall LCD display, which is projected onto a screen by its lens. The…

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A: In the deflection method of measurement, the results are determined by reading the deflection of a…

Q: 20. A ray of light in the air hits a block of transparent material at an incident angle 0f 62°. The…

A: A ray of light in the air hits a block of transparent material at an incident angle of 62°. The…

Q: 2. In the following setup, find the electric field and the potential at the point P due to the two…

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Q: ● A 12 uc charge is placed at the origin. The second -8.0 uc is placed 1.0m to the right of the…

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Q: (a) What power contact lens is needed to correct the vision of a person who has a near point of 55.0…

A: (a) What power contact lens is needed to correct the vision of a person who has a near point of 55.0…

Q: A force of 500 N exists between two identical point charges separated by a distance of 40 cm.…

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Q: Spherical Symmetry: Uniform Distribution Use gauss law to find the electrical field at r1, and r2.…

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Q: A resistor made from a wire of length L, cross sectional area A is connected to an ideal battery.…

A: Required information: Let L be the length and A be the area of cross section of the given resistor,…

Q: If I look at an electromagnetic clockwise, the magnetic field will be A) Out of the page / towards…

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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.