An X-ray tube used for cancer therapy oper- ates at 41 MV with a beam current of 40 mA striking a metal target. Calculate the power of this beam. Answer in units of W.

Q: 7. A plane has an airspeed of 142 m/s. A 30.0 m/s wind is blowing southward at the same time as the ...

A: Given: speed of plane  v = 142 m/s (let θ° north of east) speed of wind u = 30 m/s (southwards) resu...

Q: What is the momentum of a 10Kg object that slides at 12m/s across an icy lake

A: Given data: The mass of the object is m = 10 kg The velocity is v = 12 m/s The expression for the ...

Q: In the process of accommodation: the lens changes shape to focus light waves from objects at differe...

A: Accommodation :  Accommodation is the adjustment of the optics of the eye to keep an object in focus...

Q: hich the following represents thế éléctrič field máp due tô å čombiñåtion of two positive charges? A...

A: Ques: electric field map due to combination of  two positive charges

Q: An alpha particle (consisting of two protons and two neutrons), traveling at a speed of v = 1.4 x 10...

A: Given v=1.4×105 m/sB=1.8 T

Q: In the two-level system, estimate the emission line full width at half maximum (FWHM) for spontaneou...

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Q: If a final image is formed at a distance of 25 cm from the eyepiece of a microscope with a total mag...

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Q: Calculate the absolute pressure at an ocean depth of 100 m. Assume the density of ocean water is 102...

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Q: A car drives around a circular track of diameter 82 m at a constant speed of 49.7 m/s. During the ti...

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Q: 1- Calculate the speed of light in glass with a refractive index of 1.66, knowing that the speed of ...

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Q: A frozen turkey that weighs 10N is dropped from an aircraft. It reaches a terminal velocity of 120 k...

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Q: Starting in Albany, you travel a distance 406 miles in a direction 14.9 degrees north of west. Then,...

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Q: A circuit is constructed with four resistors, one capacitor, one battery and a switch as shown. The ...

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Q: A circular curve of highway is designed for traffic moving at 75 km/h. Assume the traffic consists o...

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Q: Nearly all planets that astronomers have found orbiting other stars have been giant planets with mas...

A: Yes it is proves that our solar system is unique. The number of planets we have and their distance t...

Q: Direction of the current I: O Right O Left CCW O CW

A: Explanation :- We notice that emf of battery on right hand i.e E2 = 9 V is greater than the emf of b...

Q: change the temperature of 10 g of lead (S 0.031 kcal/g °C from 20 to 100 °C *

A: Given Mass is m=10g Specific heat capacity is S=0.031 kcal/g°C Change in temperature ie T2-T1=(100-2...

Q: One electron has a charge of 1.60 x 10^19 C. A car's starter motor draws 50 A of current from the ca...

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Q: how is a living system with all its complexity and order, does not violate the 2nd Law of Thermodyna...

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Q: A 6 ampere current is flowing through a wire, with a voltage of 10 volts. What is the resistance of ...

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Q: A golf ball with a mass of 0.046 kg is accelerated from rest to 67 m/s in 0.0066 seconds. What force...

A: Given value--- mass = 0.046 Kg. initial speed = 0 m/s. final speed = 67 m/s. time period = 0.0066 s...

Q: I have a physics question as follow "Consider the apparatus shown below in which a conducting bar ca...

A: Since you have posted a question with multiple sub-parts, but as per our company guidelines we are s...

Q: 1200eal) - The thermos jug contains 300 grams of coffee (mainly water) at 2% 90 degrees, in this jug...

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Q: A hockey puck moving at 0.460 m/s collides with another puck that was at rest. The pucks have equal ...

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Q: A 210-kg load is hung on a wire of length of 3.30 m, cross-sectional area 2.00 x 10-5 m2, and Young'...

A: mass of load (m) =210 kg initial length of Wire (L0) = 3.3 m Cross sectional area of Wire (A) = 2.0 ...

Q: A solenoid of radius 3.5 cm has 580 turns and a length of 25 cm. Find its inductance. ______mH ...

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Q: Direction of B inside the small loop as a result of the induced current:

A: From the diagram, the direction of current in the loop is clockwise direction.

Q: Find the cross-sectional area of a 4.9 cm long solenoid with 515 turns and a self-inductance of 45 µ...

A: Given value--- length = 4.9 cm. Number of turns = 515 . self inductance = 45 micro H. We have to f...

Q: . At the surface of Mars, the acceleration due to gravity is g = 3.7 m/s?. A watermelon weighs 45 N ...

A: Given data:  Weight on earth (W) = 45 N Acceleration due to to gravity on Mars (g') = 3.7 m/s2 Requi...

Q: Two point charges q1 and q2 are held in place 4.50 cm apart. Another point charge Q = +2.00 μCoul, o...

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Q: A car moves in a straight line so that its position changes at every moment according to the relatio...

A: position of the  car at time t is given by  x(t) = 3t - 4t2  + t3  displacement = final position - i...

Q: Calculate the magnitude of the linear momen- tum for each of the following cases; A proton with mass...

A: Write the equation of linear momentum. p = mv p = (1.67 × 10-27 kg) x (4.79 x 106 m/s) p = 8 x 10-21...

Q: To qualify for the finals in a racing event, a race car must achieve an average speed of 160 mi/hr o...

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Q: Q#4: In an experiment to estimate the acceleration due to gravity, a student drops a ball at a dista...

A: Given data:  Initial velocity (vi) = 0 m/s Height (h) = 1 m Time (t) = 0.46 s Required:  Acceleratio...

Q: What does kinetics mean? Explain using biology, physics, or non-scientific terms to explain kinetics...

A: kinetics ;-   a branch of science that deals with the effects of forces upon the motions of material...

Q: In the figure, a stuntman drives a car (without negative lift) over the top of a hill, the cross sec...

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Q: In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calcul...

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Q: A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the rig...

A: mass of the ball, m = 0.145 kgvelocity of the ball, vi = 50.0 msspeed after leaving, vf = 52.0 ms at...

Q: 15.78 The 0.45-kg soccer ball is 1 m above the ground when it is kịcked upward at 12 m/s. Neglecting...

A: Given in question - Mass of ball(M) = 0.45kg                                  Speed at height 1m(V) ...

Q: When all the ion channels in a cell membrane are closed, the resistivity is very high. However if so...

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Q: onsider the following. (Take R1 = 10.4 Ω, R2 = 5.0 Ω, and R3 = 4.5 Ω.) (a) Find the equivalent res...

A: We have give the value R1 = 10.4 Ω, R2 = 5.0 Ω, and R3 = 4.5 Ω Current through 2 .0 Ω Resistor is 1A

Q: A projectile is shot horizontally at 23.4 m/s from the roof of a building 55 m tall and experiences ...

A: Motion of projectile can be divided into x component and y component.

Q: 2) Derive the expression for the time rate of change of the spherical unit direction vector j follow...

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Q: A force of 40 N, 180° accelerates a 5.0 kg block at 6.0 m/s2, 180° along a horizontal surface. (a) D...

A: Given data: Force, F = 40 N Mass, m = 5 kg Acceleration , a = 6 m/s2   Solution: a) Determine the fo...

Q: of gravity increases, escape speed. A. Increases B. Decreases C. Remains the same

A: Escape velocity is the minimum velocity with which object thrown upward so that it crosses gravitati...

Q: If a solid insulating sphere of radius 50 cm carries a total charge of 150 µC uniformly distributed ...

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Q: +ŷ d d.

A: the electric field due to positive charge is away from charge  means  when the charge +q is placed i...

Q: The self-inductance of the circuit in the figure below is 1.10  10-7 H. Find the back emf when the c...

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Q: A person pushes horizontally with a force of 170. N on a 52.0 kg crate to move it across a level flo...

A: Given data: The horizontal force is F=170 N. The mass of crate is m=52.0 kg. The coefficient of fric...

Q: Find the magnetic energy stored by a 4.94 mH inductor when the current through it is 10.3 A.

A: Given: The inductance of the inductor is 4.94 mH. The electric current is 10.3 A.

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.