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The magnetic field in a cyclotron is $0.50 \mathrm{T}$. What must be the minimum radius of the dees if the maximum proton speed desired is $1.0 \times 10^{7} \mathrm{m} / \mathrm{s} ?$

The magnetic field in a cyclotron is $0.50 \mathrm{T}$. What must be the minimum radius of the dees if the maximum proton speed desired is $1.0 \times 10^{7} \mathrm{m} / \mathrm{s} ?$

Physics

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INSTANT ANSWER

Unpolarized light passes through two Polaroids; the axis of one is vertical and that of the other is at (6.10x10^1) o to the vertical. What is the ratio of the transmitted light intensity to the original light intensity?

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The pupil of the eye controls Question 8 options: the amount of light reaching the retina. the focal length of the eye. none of these the near point. the far point.

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The corrective lenses of a person suffering from which of the following vision ailments could be used to start a fire by focusing sunlight? Question 7 options: no eyeglass lenses can be used to make a fire astigmatism hyperopia cataracts myopia

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A general condition for two coherent waves to undergo constructive interference is that Question 3 options: their phase difference is an odd integral multiple of π rad. their phase difference is zero. their phase difference is an even integral multiple of π rad. their phase difference is π/2 rad.

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Hubert Agamasu verified

Numerade educator

2. By using the right-hand rule, what is the direction of the force on an electron with velocity pointing downwards on the page in a uniform magnetic field directed into the page? A. Left B. Right C. Into the page D. Out of the page

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Hubert Agamasu verified

Numerade educator

1. The figure below shows a particle with charge q moving to the right in a uniform magnetic field, B, which also points to the right. If q > 0, then the magnetic force acting on the particle is in which direction? A. To the right of the page. B. To the left of the page. C. Either into the page or out of the page depending on the mass of the particle. D. The magnetic force is zero.

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David Collins verified

Numerade educator

Consider the following diagrams: Which diagram shows the presence of a catalyst? Determine the activation energy for the catalyzed reaction.

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Angela Williamson verified

Numerade educator

Consider the following diagrams: Which diagram shows the presence of a catalyst? Determine the activation energy for the catalyzed reaction. a, 90 kJ a, 80 kJ b, 80 kJ

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Ronald Prasad verified

Numerade educator

What is the work performed by a gas if it expands from 4.44 L to 6.19 L against a constant external pressure of 1.26 atm? Express the final answer in joules. -2.23 × 102 J -242 J -448 J -4.42 × 102 J

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Oluwapelumi Kolawole verified

Numerade educator

Consider the galvanic cell in the following reaction Zn(s) + 2H+ (? M) => Zn2+ ( 1M) + H2 (1 M) Where 2H+(aq) + 2e- => H2(g) & E°= 0 V Zn2+ (aq) + 2e- => Zn(s) & E°= -0.76 V Suppose the cell potential E is 0.54V at room temperature, [Zn2+] = 1 M and PH2 = 1 atm, what is the molar concentration (M) of H+? 2X10-4 5X10-3 7X10-4 4X10-3 3X10-2

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