
Concept explainers
(a)
The distance between the adjacent slits on the grating.
(a)

Answer to Problem 64P
The distance between the adjacent slits on the grating is
Explanation of Solution
The distance between adjacent slits is the reciprocal of the number of slits per unit length.
Write the equation for the distance between the adjacent slits.
Here,
Conclusion:
Substitute
Therefore, the distance between the adjacent slits on the grating is
(b)
The distance of the first-order maximum from the central bright spot on the screen.
(b)

Answer to Problem 64P
The distance of the first-order maximum from the central bright spot on the screen is
Explanation of Solution
Write the Bragg’s law.
Here,
Substitute
The arrangement is shown in figure 1.
Refer to figure 1 and write the expression for
Here,
Rewrite the above equation for
Put equation (III) in equation (IV).
Conclusion:
Substitute
Therefore, the distance of the first-order maximum from the central bright spot on the screen is
(c)
The distance of the second-order maximum from the central bright spot on the screen.
(c)

Answer to Problem 64P
The distance of the second-order maximum from the central bright spot on the screen is
Explanation of Solution
Substitute
Put equation (VI) in equation (IV).
Conclusion:
Substitute
Therefore, the distance of the second-order maximum from the central bright spot on the screen is
(d)
Whether it can be assumed that
(d)

Answer to Problem 64P
It cannot be assumed that
Explanation of Solution
The assumption
Rewrite equation (II) for
Conclusion:
Substitute
Substitute
From the calculations, it is clear that the values of
Therefore, it cannot be assumed that
Want to see more full solutions like this?
Chapter 25 Solutions
Physics
- Please draw a sketch and a FBDarrow_forward8.69 Spheres A (mass 0.020 kg), B (mass 0.030 kg), and C (mass 0.050 kg) are approaching the origin as they slide on a frictionless air table. The initial velocities of A and B are given in Fig. P8.69. All three spheres arrive at the origin at the same time and stick together. (a) What must the x- and y-components of the initial velocity of C be if all three objects are to end up moving at 0.50 m/s in the +x-direction after the col- lision? (b) If C has the velocity found in part (a), what is the change in the kinetic energy of the system of three spheres as a result of the collision? Figure P8.69 UC C B UB=0.50 m/s 60° VA = 1.50 m/s Aarrow_forward8.36 A 1050 kg sports car is moving westbound at 15.0 m/s on a level road when it collides with a 6320 kg truck driving east on the same road at 10.0 m/s. The two vehicles remain locked together after the collision. (a) What is the velocity (magnitude and direction) of the two vehicles just after the collision? (b) At what speed should the truck have been moving so that both it and the car are stopped in the collision? (c) Find the change in kinetic energy of the system of two vehicles for the situ- ations of parts (a) and (b). For which situation is the change in kinetic energy greater in magnitude?arrow_forward
- 8.10 ⚫ A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the right at 40.0 m/s; when it leaves the bat, the ball is traveling to the left at an angle of 30° above horizontal with a speed of 52.0 m/s. If the ball and bat are in contact for 1.75 ms, find the horizontal and vertical components of the average force on the ball.arrow_forwardL1=5.2m L2=0.5m L3=1.7m L4=0.6m L5=0.5m L6=0.5m V2=5.4m/sarrow_forwardM1=0.45M2=1.9M3=0.59arrow_forward
- I don't know why part A is wrong and can you help me with part B as wellarrow_forwarda 500-n block is dragged along a horizontal surface by an applied force t at an angle of 30.0° (see figure). the coefficient of kinetic friction is uk = 0.400 and the block moves at a constant velocity. what is the magnitude of the applied force T in newtons?arrow_forwarda 500-n block is dragged along a horizontal surface by an applied force t at an angle of 30.0° (see figure). the coefficient of kinetic friction is uk = 0.400 and the block moves at a constant velocity. what is the magnitude of the applied force T in newtons?arrow_forward
- Block A, with a mass of 10 kg, rests on a 30° incline. The coefficient of kinetic friction is 0.20. The attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, with a mass of 15.0 kg. is attached to the dangling end of the string. What is the acceleration of Block B in m/s? show all steps pleasearrow_forwardWhen current is flowing through the coil, the direction of the torque can be thought of in two ways. Either as the result of the forces on current carrying wires, or as a magnetic dipole moment trying to line up with an external field (e.g. like a compass). Note: the magnetic moment of a coil points in the direction of the coil's magnetic field at the center of the coil. d) Forces: We can consider the left-most piece of the loop (labeled ○) as a short segment of straight wire carrying current directly out of the page at us. Similarly, we can consider the right-most piece of the loop (labeled ) as a short segment straight wire carrying current directly into the page, away from us. Add to the picture below the two forces due to the external magnetic field acting on these two segments. Then describe how these two forces give a torque and determine if the torque acts to rotate the loop clockwise or counterclockwise according to this picture? Barrow_forwardIn each of the following, solve the problem stated. Express your answers in three significant figures. No unit is considered incorrect. 1. For the circuit shown, determine all the currents in each branch using Kirchhoff's Laws. (3 points) 6 5V 2 B C 4 A www 6 VT ww T10 V F E 2. Compute for the total power dissipation of the circuit in previous item. (1 point) 3. Use Maxwell's Mesh to find Ix and VAB for the circuit shown. (3 points) Ix 50 V 20 ww 21x B 4. Calculate all the currents in each branch using Maxwell's Mesh for the circuit shown. (3 points) www 5ი 10 24V 2A 2002 36Varrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningPhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStaxGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill





