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Question: An x-ray beam of a certain wavelength is incident on a crystal, at 31.3° to a certain family of reflecting planes of spacing 41.4 pm. If the reflection from those planes is of the first order, what is the wavelength of the x rays in nanometers?
If the football has a mass of 0.47kg and the time of contact with the ball is 0.021s, what is the force exerted by the ball on the kicker's foot.
The total kinetic energy in one mole of an ideal gas is 4,000 J. If the gas is nitrogen, what is the root mean square velocity of an individual particle in the ideal gas
If the blocks move determine the magnitude of their acceleration. If the blocks move determine the magnitude of the tension in the string. If the blocks do not move evaluate the sum of the magnitude of the forces of friction acting on the blocks...
A man pushes a lawn mower on a level lawn with a force of 186 N. If 39% of this force is directed downward, how much time is spent in pushing the mower this distance
Determine the magnitude of the emf EMF induced in the loop after exactly time 6.00 s has passed since the circumference of the loop started to reduce.
what is the rms speed of the molecules. Graphically find out the distance and direction from Lake B to the base camp.
An 86 Kg person stands on a uniform ladder 4m long, that weighs 70N. The floor is rough; hence, it exerts both a normal force, and a frictional force, on ladder. The wall, on the other hand, is frictionless; it exerts only the normal force. What a..
A solid aluminum sphere has a radius of 2.34 m and atemperature of 89.0 °C. The sphere is then completely immersedin a pool of water whose temperature is 22.3 °C. find the magnitude of the difference between the weights
A car's outside rear-view mirror is convex, with focal length -1.5m . In the mirror you see a truck that's actually 4.0m tall and 10.3m behind you. What is its apparent height
Points A and B have electric potentials of 257 V and 129 V, respectively. When an electron released from rest at point A arrives at point C its kinetic energy is KE1, What is the electric potential at point C
A disk of radius "r" and uniform surface charge density finalized_jax">\(\sigma\) spins with angular velocity %u03C9 about the y-axis
A bullet is fired through a board, 18.0 cm thick, with its line of motion perpendicular to the face of the board. find the bullet's acceleration as it passes through the board
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