3.7×1020 electrons are flowing past any point in a wire per minute (electron charge = -1.6×10-1⁹ C). (a) How much electric current is flowing through the wire? (b) How many protons are flowing through the wire?.

Q: Gold has a density of 1.932 x 104 kg/m³ at 0°C and an average linear expansion coefficient of 1.420…

A: density of gold at 0o C = 19320 kgm3linear expansion coefficient = 1.42×10-5 oC-1mass at 0o C = 60…

Q: why is mechanical energy not conserved in the collision of the projectile with a pendulum?

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Q: Sample Problem 4.5 A 1.8 kN weight is attached at A to the lever shown. The constant of the spring…

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Q: b) In free space a two point charges; Q1=2nc at (3,2,0) and Q2-5nc at(-1,-2,3). Find the potential…

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Q: Situation 8: Determine the u and v Components of the Forces shown 63° 42° F2 = 485 N 34° u F1 = 325…

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Q: If a sound wave has a low frequency, will the pitch be high or low Why?

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Q: The y-component of the force F which a person exerts on the handle of the box wrench is known to be…

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A: Given value--- radius = 1.35 A. distance = 2.5 mm. We have to find--- number of atom ?

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A: Given data:  The block is at rest on the inclined plane Mass of the block = m Required: The static…

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Q: 72A A point particle is initially held at rest on a plane inclined by an angle 8, with respect to…

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Q: A 10-gram aluminum cube absorbs 677 joules when its temperature is increased from 50°C to 125°C.…

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Q: Theoretically speaking would anything different happen visually if a negatively charged rod was…

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Q: Rank, from greatest to least, the net force on the block in the four situations below (AD). Explain…

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Q: A rock is thrown downward into a well that is 8.76 m deep. If the splash is heard 1.02 seconds…

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Q: A disk with radius R and uniform positive charge density σ lies horizontally on a tabletop. A small…

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Q: The table below shows position data for 8 different objects. Let NORTH be the positive direction.…

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Q: Section 1.9 Unit Vectors 1.34 In each case, find the x- and y-components of vector A: (a) A = 5.01…

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Q: For the circuit shown in figure, the capacitance C= 10µF, and the feedback resistance R 20 kn If the…

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Q: A brother and sister fight over a 1.02 kg toy and pull on it from opposing directions. The brother…

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Q: On 24 November 2021 the DART (Double Asteroid Redirection Test) spacecraft was launched. Its mission…

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Q: Example_8 The filament in a clear incandescent light bulb radiates visible light at a power of 5.00…

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Q: A jet plane holds 1000 gals of fuel. Fuel weighs 6.00 lbs/gal. The engine consumes 1200 lbs/hr. The…

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Q: What is the work done, in joules, by the force? W = || J

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Q: You wish to cool a 1.47 kg block of brass initially at 84.0°C to a temperature of 49.0°C by placing…

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Q: Vector A⃗ A→, vector B⃗ B→, and vector C⃗ C→ are drawn to scale in the figure below. The vector A⃗…

A: CONCEPT:

Q: A football running back rushes 13 m straight down the playing field in 2.1 s (in the positive…

A: Given   Duration Displacement Interval 1 2.1 s +13 m Interval 2 1.95 s -3.5 m Interval 3…

Q: A force of 36 Newtons causes an object to accelerate from rest to a speed of 12 m/s in 6.0 seconds.…

A: Given data:  Force (F) = 36 N Initial velocity (u) = 0 m/s Final velocity (v) = 12 m/s Time (t) =…

Q: A car travels due east with a speed of 40.0 km/h. Raindrops are falling at a constant speed…

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Q: 46kg woman wearing shoes with high heels has her weight resting only on an area of 5.5 x 10³ m² )…

A: Given value--- mass = 46 kg. area of one shoe = 5.5 × 10-3 m2.  We have to find--- a) How much…

Q: caps lock A b. What is the total final momentum? Why? S c. What is her velocity after throwing the…

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Q: Situation 7: The figure illustrates the water pressure acting on the sides of a dam. Determine the…

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Q: 44. A graph of position versus time for an object undergoing simple harmonic motion is shown in Fig.…

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Q: 1. Imagine you toss a coin into the air. It starts 1.20 meters above the ground, moving upward at a…

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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.