Describe the Davission-Germer experiment by using the schematic diagram to show electron diffraction.

True/False. Mark your answers to the left of each question.
a. Two solid spheres with the same diameter but different masses will
experience the same acceleration when dropped from the same height.
b. A load being lifted by a crane at a constant velocity has no net force acting
on it.
c. After a firecracker, initially at rest explodes, the total momentum of all of
the pieces is no longer zero.
d. Two solid spheres with different diameters but the same mass are rolled
down an incline. The sphere with the smaller diameter will accelerate
faster.
e. The work done by the net force on an object always causes a change in
objects speed.
f. In an inelastic collision momentum is not conserved.
g. An object in equilibrium has no net torque around any pivot point.
h. The period of a pendulum decreases if the mass of the pendulum
increases.
i. If all of the forces on a system at rest are internal forces, the center of
mass cannot change.
j. If the pressure of an ideal gas is doubled at constant temperature and
number of molecules, the volume of the gas must be halved.
k. The average velocity of molecules in an ideal gas is proportional to three
times the temperature.
l. An isolated system in thermal equilibrium has its maximum value of
entropy.

Assume the average home requires an electrical power of 1.2kW, an average life expectancy of 75 years, and only power from nuclear energy. For such a homeowner, what would be the lifetime generation of vitrified high level waste (HLW) in kg and liters (assuming reprocessing and recycling of U and Pu). the vitrified waste containers in France hold the HLW equivalent of 1.5 fuel recycled assemblies with an energy production of 1 TWh (1E+12 Wh). Compare this to some common size object such as a soda can for ease of conversation. Of course, this ignores other energy needs/requirements for such a person. Explain. How might nuclear power be used to meet these needs also?

Please explain and give an example:

Solving linear and quadratic equations.

Please type answer do not hand write. Thank you.

A heat conducting rod, 1.60 m long, is made of an aluminum section, .9 m long, and a copper section, .7 m long. both sections have a cross-sectional area of .0004 m². the aluminum end and the copper end are maintained at temperatures of 30 degrees celcius and 170 degrees celcius, respectively. the thermal conductivity of aluminum and copper are 205 and 385 W/m*K, respectively. the rate at which heat is conducted in the rod is closest to:

11W

12W

9W

7.9W

10W

Please show the steps how to get to the answer. i really want to learn this.

Suppose two parallel lines of current are 0.85A and 0.35A in the same direction, with the centers of their wires 21cm apart. A -2.04nC particle is fired at 3500m/s in the same direction as both lines of current exactly in between the lines of current.

a. Find the force that acts on the particle and in which direction. If a coordinate system will help, you may assume the currents and particle are in the +x direction and the currents lie in the xy plane.

b. Find the elctric field, magnitude, and direction that would allow the particle to continue to move parallel to the wires.

Thanks in advance! :) Please show all work!

A cell membrane has a resistance and a capacitance and thus a characteristic time constant.

What is the time constant of a 8.3 nm -thick membrane surrounding a 3.6×10−2 mm -diameter spherical cell? Assume the resistivity of the cell membrane as 3.6×106 Ω⋅m and the dielectric constant is approximately 9.0.

Two long, charged, thin-walled, concentric cylindrical shells have radii of 3.9 and 9.4 cm. The charge per unit length is 6.8 × 10^-6 C/m on the inner shell and -8.5 × 10^-6 C/m on the outer shell. What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distance r = 5.9 cm? What are (c) E and (d) the direction at r = 14 cm?

A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.65 m/s2 for 16.0 s. 2. Maintain a constant velocity for the next 1.20 min. 3. Apply a constant negative acceleration of ?9.34 m/s2 for 4.54 s. (a) What was the total displacement for the trip? m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? leg 1 m/s leg 2 m/s leg 3 m/s complete trip m/s

A series RLC circuit consists of a 56.0 ? resistor, a 3.80 mH inductor, and a 400 nF capacitor. It is connected to a 3.0 kHz oscillator with a peak voltage of 4.10 V.

Part A

What is the instantaneous emf E when i =I?

Express your answer with the appropriate units.

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Part B

What is the instantaneous emf E when i =0A and is decreasing?

Express your answer with the appropriate units.

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Correct

Part C

What is the instantaneous emf E when i =?I?

Express your answer with the appropriate units.

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Answer Thoroughly

Step 1 – What are the major primary air pollutants and their sources?

Step 2 - What are the secondary pollutants, and how are they formed?

Step 3 – Distinguish between emissions and ambient concentrations. How are they measured?

3. Frequency and wavelength are both in your equation for speed. Why is it that, when you changed the frequency, you did not change the speed of the wave?

Federal funding agencies must form committees to decide which telescope projects will receive funds for construction. When deciding whic projects wil be funded, the committees must consider:

that certain wavelengths of light are blocked from reaching Earth's surface by the atmosphere,

how efficiently telescopes work at different wavlengths, and

that telescopes in space are much more expensive to construct than Earth-based telescopes.

Using these three criteria, consider each pairing of telescope proposals listed below. For each pair, state which of the two you would choose to fund and explain your reasoning.

Pair A)

Project Beta:  An X-ray wavelength telescope, located near the North Pole, which will be used to examine the Sun.

Project Alpha: An infrared wavelength telescope, placed on a satellite in orbit around Earth, which will be used to view supernovae.

Pair B)

Project Rho: A UV wavelength telescope, placed high atop Mauna Kea in Hawaii at 14,000 ft above sea level, which will be used to look at distant galaxies.

Project Sigma: A visible wavelength telescope, placed on a satellite orbit around Earth, which will be used to observe a pair of binary stars located in the constellation Ursa Major.

Pair C)

Project Zeta:  A radio wavelength telescope, placed on the floor of the Mojave Desert, which will be used to detect potential communications from distant civilizations outside our solar system.

Project Epsilon:  An infrared wavelength telescope, located in the high-elevation mountains of Chile, which will be used to view newly forming stars (protostars) in the Orion nebula.

Hockey puck B rests on a smooth ice surface and is struck by a second puck A, which has the same mass. Puck A is initially traveling at 16.0m/s and is deflected 22.0 degrees from its initial direction. Assume that the collision is perfectly elastic.

a) Find the final speed of puck b after the collision.

b) Find the final speed of puck a after the collision.

c) Find the direction of b's velocity after the collision