Material $ (eV) 1. The cutoff wavelength for the photoelectric effect in a certain metal is 254 nm. (a) What is the work function for that metal? (b) Will the photoelectric effect be observed for 2>254 nm or for 1 < 254 nm? Na 2.28 Al 4.08 Co 3.90 Cu 4.70 2. When light of wavelength A illuminates a copper surface, the stopping potential is V. In terms of V, what will be the stopping potential if the same wavelength is used to illuminate a sodium surface? Zn 4.31 Ag 4.73 Pt 6.35 Pb 4.14

Q: vector has a magnitude of 72 and a direction of 56°. A second vector has a magnitude of 51 and a…

A:

Q: If C is added to B. the result is -9å + 5ĵ. If B is subtracted from C. the result is 4î – ĵ . Find…

A: C→ + B→ = -9i^ + 5j^    ...(1)C→ - B→ = 4i^ -j^    ...(2)

Q: Can someone look at the options again. Please select all of the correct answers.

A:

Q: Given a vector's magnitude and direction, 52 at 332°, find the Y component of the vector.

A:

Q: t (b) Using your previous results, calculate the total flight time, t, in seconds, until the bullet…

A: GivenInitial velocity of bullet V0=79.45 m/s

Q: 5. x In x dx

A: Here we will be using UV rule for integration

Q: Yelena, Natasha, and the "Red Guardian" are looking for Melina's house. They walk 6.0 km [N], then…

A:

Q: An aircraft is approaching the runway for landing. He sees number 33 written on runway. What…

A: Inversion happens when the same thing is seen from the opposite sides.

Q: Answer B is saying it is wrong.

A:

Q: A bus traveled 60 km north from its terminal. From this point, it traveled 80 km east. How far is…

A: Given: The bus initially travelled 60 km north. The bus travelled 80 km east.

Q: A = 2 units @89 degrees B =7 units @ 22 degrees C= 28 units @ 76 degrees D = 81 units @ 55.8 degrees…

A:

Q: has a magnitude of 149. Which of the following could not

A:

Q: Consider two vectors A = 3.56 i+ -3.07 k and B = 0.09j+ 1.82 k. Find the angle o between these two…

A: Given The two vectors are given as A→=3.56 i^+-3.07 k^ and B→=0.09 i^+1.82 k^ Angle between the two…

Q: Find the velocity and acceleration vectors in terms of u, and up. r=2 cost and 0 = 9t V= -2 sin t)4)…

A:

Q: how about if the v= 0.884

A:

Q: b) Draw direction vectors in unit cells for the following cubic directions: i) (241) ii) (3 I 3)…

A: i For 2  4  1 the intercepts is  a  b  c=12  -14  -1 ii For 3  1  3 the intercepts is  a  b  c=13…

Q: Ben, from his house, went to the barbershop to have his hair done. The barbershop is 5 km West from…

A: Distance moved by Ben from his home to barbershop = 5 km  The direction of barbershop = west of…

Q: Form the dot product of A=23N 37° and B = 14N -35°

A:

Q: Please show the solutions answers for number 2

A:

Q: Fig.(4) In figure (5), find the Leq. between points A & B, all L=1 H A relle Fig.(5)

A:

Q: Select the answer that expresses F as a Cartesian Vector. (83.21 + 118.8j) N O (118.81 +83.2j) N O…

A:

Q: The unit vector i is commonly used to identify the direction: O Along the x axis. O Along the y…

A: Unit vectors are those vectors which have unit magnitude with certain direction. So unit vector…

Q: Vector A has a magnitude of 6 units, vector B has a magnitude of 7 units, A dot B has a value of 14.…

A: Given data The magnitude of vector A is given as A=6 units. The magnitude of the vector B is given…

Q: 37. a. Find the bearing from O to A. (See Example 5) -12° b. Find the bearing from O to B. 195° c.…

A: Bearing O to A Bearing is basically angle measured in a clockwise direction from north line .

Q: Given vector A =   and vector B = , what is A dot B?

A: Given            A = &lt;10, 20, 18&gt;          B = &lt;16, -17, -24&gt;

Q: If Q, > 0, Q, |Q;| then which answe choice gives correct information?

A:

Q: A miner in the underground tunnel walks 59 m due East, 115 m due South and 83 m due West. What was…

A: In the given question, given that a miner walks 59m due east, 115m due south and 83m due west in the…

Q: Part C Enter the expression -20 + 6D in the answer box using the notation just described. Express…

A:

Q: what are the i and j called in physics that have the arrow above them that resemble a triangle?

A:

Q: The four force are acting at a point as shown in the figure. Determine the resultant in magnitude…

A:

Q: A child walking in a field makes three consecutive displacements. The child first moves 6.25 m…

A:

Q: A vector has a magnitude of 2.8 m and points in a direction that is 135° counterclockwise from the z…

A:

Q: 10. If you are driving a car down the street, which would be a good reference point? the tires of…

A: a mailbox.

Q: The scalar product of vector à = -31 +53 and vector B is 1. Which of the following is vector B A ? ○…

A: A→ = -3i^+5j^A→·B→ = 1

Q: Solve to the significant number of digits 3456 + 888.010 + 53.11 + 7 – 1.0   (45.805*2.00)/5.0 +…

A:

Q: If only one answer is correct, would it be A or C? Or could both be correct? Please explain.

A: As the roads are banked , there is larger normal force on the vehicle and hence friction(=uN)  is…

Q: Thank you. What do the 3 dots in section 'b' mean and also the # notation?

A: Section (b) is given equation are-∵ particle accelerate in a straight line with acceleration 'a' .…

Q: A conducting rod is free to slide on two parallel conducting bars. A resistor is connected to the…

A: Power dissipated in the resistor P=64 W Speed of the rod v=8 m/s

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.