The Stanford Linear Accelerator Center (SLAC) operated an electron storage ring about 72.0 m in diameter called SPEAR (closed in 2009), in which a circulating beam of electrons moved at nearly the speed of light.   Assuming that this electron beam had a current of 25 A, how many electrons were in the beam at any given momen

Q: P1 P=10 kN 40 100 P2 20 х ахis

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Q: 7.Which of the following circuit has a total resistance of 15 2 if the total current in the circuit ...

A: To identify : The circuit having a total resistance of 15 ohm if the total current is 3 Ampere   

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A: Given: The magnitude of each charge is 6 mC. The magnitude of the force is 1.2 N.

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A: GivenMagnitude of inward force,F=132 NBlock is compressed to distance, x=2.00 nm

Q: I. A charge moving vertically upward with speed v=200. m/s enters a region of constant magnetic fiel...

A: Since you have posted a question with multiple sub-parts, as per our guidelines we will solve first ...

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A: Introduction: The velocity of the object is defined as the rate change of potion with respect to tim...

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Q: 200N 100N 3

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Q: 1.) Consider the pulley system below. Assume M1 = 10kg, and M2 = 40kg. Assume the pulley has no mass...

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Q: Q5) A child pulls a wagon with a force of 20N by a rope making an angle of 25° with the horizontal. ...

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Q: free electrons are there in a rectangular block of a conductor whose dimension is 8 m by 4 m by 3 m?...

A: We know that the formula of the drift velocity is given as  vd= IneAn=IevdA ------ eq 1  where I is ...

Q: The cutoff frequency, fo, for a low pass filter is given by the following equation: 1 2TRC The compo...

A: We have fc=12πRC=12π×1.5×103×0.02×10-6=5305.16 Hz

Q: 90 N F Example 4.1 30° 30 kg A person pulls a 30 kg crate 10 m across a level floor using a rope tha...

A: Use work done general formula i.e It is given by the dot product of force and dis

Q: A 2.80-g lead bullet at 28.0°C is fired at a speed of 200 m/s into a large block of ice at 0°C, in w...

A: The mass of the bullet, m = 2.80 g = 2.80×10-3 kg The temperature, T = 28°C = 28 + 273 = 301 K The s...

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Q: B. Work on the following problems. Indicate first under which case it belongs to and then solve comp...

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Q: Electric Potential The work done is moving a charge of 2.0 µC between two points in an electric fiel...

A: Given: The chanrge is 2 μC. The work done on the charge is 1.5x10-4 J.

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Q: In open heart surgery, a small amount of energy is often used to defibrillate the heart. We know the...

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A: One charge is positive Other charge is neutral 

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Q: The measurement reading in the figure below is: By V.Ryan 1 3 4 5 7 A 20.64 mm B 19.64 mm c) 18.46 m...

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Q: VII the force vector F, has a magnitude of 30.0 N pointing in the - z-direction and force vector F2 ...

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Q: 2. A platinum bar increases in length by 0.2% when its temperature increases to 222°C. a. Draw the f...

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A: C1 = 5 F C2 = 20 F C3 = 40 F   

Q: The figure below shows a simplified model of a cardiac defibrillator, a device used to resuscitate p...

A: given: Vc=795VV=1270 VC=8.25μF=8.25*10-6 Ft=1.20sec

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Q: (a) An ideal gas is taken through a quasi-static process described by P= aV², with a = 5.50 atm/m, a...

A: Given: a=5.50atm/m6a=5.50*1.01*105  Pa/m6a=5.55*105Pa/m6

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Q: Look at the velocity-time graph given.  During which interval or intervals is the train’s accelerat...

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Q: Capacitance The capacitance of capacitor varies directly with its length. A Parallel-pale Spherical ...

A: 30) A) Let the area of parallel plate capacitor = A Let the distance between the plates  = d   

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Q: do provide the given and show complete solutions. thnx

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A: Find the tension in the cable AB FAB = 3000 x 9.81 = 29430 N FAB = 29.430 kN   Find the tension in t...

Q: A block travels up a 25 degree inclined plane with an initial speed of 14 m/s. (a) What is the  acce...

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Q: 4. 3. N-

A: Total reading = main scale reading + vernier scale reading × least count 

Q: Sime (B) time position

A: Slope of position time graph represents velocity. 

Q: Which of the following statement is incorrect?   Equilibrant is equal in magnitude to the resultant...

A: Equilibrant force:-                    An equilibrant force is a force which is equal in magnitude 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.