In a single slit experiment, the central maximum is:
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The same size as all of the other maximums. |
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Twice the size of the other maximums. |
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Half the size of the other maximums. |
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Just slightly larger than the other maximums. |
Electrons would be ejected from silver if the incident light had a frequency of:
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1.03 x 1015 Hz |
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1.02 x 1015 Hz |
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1.01 x 1015 Hz |
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None of the options is correct |
What is the mass equivalent of an x-ray with a frequency of 5.63 x 1017 Hz?
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4.14 x 10-33 kg |
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2.59 x 10-14 kg |
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1.24 x 10-24 kg |
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|
None of the options is correct. |
In: Physics
Tennis balls traveling at greater than 100 mph routinely bounce off tennis rackets. At some sufficiently high speed, however, the ball will break through the strings and keep going. The racket is a potential-energy barrier whose height is the energy of the slowest string-breaking ball. Suppose that a 100 g tennis ball traveling at 220mph is just sufficient to break the 2.0-mm-thick strings. Estimate the probability that a 150mph ball will tunnel through the racket without breaking the strings.
Give your answer as a power of 10 rather than a power of e.
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The drawing shows an edge-on view of two planar surfaces that intersect and are mutually perpendicular. Surface (1) has an area of 2.10 m
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Prove that in a cubic crystal, a direction [hkl] is perpendicular to the plane (hkl) having the same indices.
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can a pendulum clock be used in an earth- satellite?
2) It is proposed to move a particle in SHM on a rough horizontal surface y applying an external force along the line of motion. Sketch the graph of the applied force against the position of the particle. Note that the applied force has two values for a given position depending on whether the particles is moving in positive or negative direction.
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True or false
1:The electric potential is the same at any point on a single equipotential line.
2:Electric field lines always emanate from positive charges and terminate on negative charges.
3:Equipotential lines always perpendicularly cross the electric field lines.
4:It is possible that equipotential lines occasionally cross each other.
5:The electric field lines point in a direction opposite to the equipotential lines.
6: Electric field lines emanating or terminating on an isolated charge are spaced uniformly as they emanate or terminate.
7:When mapping the equipotential lines, we need to take readings for the entire conductive sheet.
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TYPE with KEYBOARD, please please
What is the purpose of Conservation of linear momentum experiment?
What is the theory of Conservation of linear momentum experiment? Write a paragraph on elastic and inelastic collision. Include related equations as well
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Socola and Brooke are balanced on a teeter-totter plank as shown below. Socola has a mass of 7.7 kg, and Brooke’s mass is 53 kg. Brooke is located 1.0 m from the pivot. Assume the plank is massless, and calculate how far Socola is from the pivot (x).
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How do you find the area of a circle when given the area of a sector?
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What type of early parenting fosters the development of emotional self-regulation, secure attachment, and self-control? Why, in each instance, is it effective?
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Hi guys, ASAP please answer the question thank you so much!!
A cyclist travelling at 8.0 m/s is rounding a corner of radius 20 m on a flat road by leaning into the curve at an angle x with respect to the vertical. the coefficient of static friction between the tyres and the road is 0.80 and the rims and tyres are of negligible mass in comparison to the mass of the cycle and rider.
1. draw a diagram explicitly showing the vertical and lateral forces on the combined mass of rider and cycle
2. by determining the torques about the combined centre of mass, show the angle of the lean is given by tanx = Ffr/Fn (friction force and normal force )
3. detemine the angle x for the value given
4. evaluate the minimum radius of turn the cyclist could make at that speed
5. explain why a properly designed velodrome is a better place for high speed cycling than a flat road
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Three identical bricks are strung together with cords and hung from a scale that reads a total of 35 N. (a) What is the tension in the cord that supports the lowest brick? N (b) What is the tension in the cord between the middle brick and the top brick? N
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How long does it take the Sun to melt a block of ice at 0∘C with a flat horizontal area 1.0 m2 and thickness 1.9 cm ? Assume that the Sun's rays make an angle of 32 ∘ with the vertical and that the emissivity of ice is 0.050.
Express your answer to two significant figures and include the appropriate units.
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