Briefly explain the following terms in a few sentences:

a. Resolution of optical microscopy

b. Langmuir versus Langmuir-Blodgett (LB) film

c. The wavelength of electrons at an acceleration voltage of 100 kV

d. Chemically amplified photoresist

e. Elastic versus inelastic scattering

f. Capillary force

A block of mass m1 = 6 kg on a rough 30°-inclined plane is connected to a 4-kg mass (m2) by a string of negligible mass passing over a pulley shaped like a ring. The 2-kg pulley has radius 20 cm and rotates about its symmetry axis of rotation. The string causes the blocks and the pulley to rotate without slipping and without friction. The 6-kg block (m1) on the 30°slope is initially pressed against a spring near the bottom of a long rough incline, compressing the spring by 50 cm. The spring is not attached to the block and has a spring constant is 500 N/m. When the system is released, the spring returns to its equilibrium length as it projects the 6-kg block (m1) toward the top of the incline. Assume that the spring just loses contact with the block (m1) at the instant it returns to its equilibrium length. The coefficient of kinetic friction between the block (m1) and the surface of the incline is 0.2. By considering the conservation of energy and any other suitable methods: (a) Calculate the speed of the blocks at the instant the spring first returns to its equilibrium length. [v = 3.2 m/s] (b) What is the total angular momentum of the system when the spring first returns to its equilibrium length? [7.7 kg.m2/s] (c) By considering the total angular momentum of the system, find the rate of change of the angular momentum of the system after the blocks lose contact with the spring. [-0.08 m.N] (d) What is the net torque causing the angular acceleration of the system after the blocks lose contact with the spring? [-0.08 m.N]

Workers have loaded a delivery truck in such a way that its center of gravity is only slightly forward of the rear axle, as shown in the figure. The mass of the truck and its contents is 6960 kg. Find the magnitudes of the forces exerted by the ground on (a) the front wheels and (b) the rear wheels of the truck.

The cart rolls down an incline. The launcher fires the ball in a direction perpendicular to the cart. Show that the ball lands back in the cart.

I need to make a final grade 12 physics presentation about everything that i have learned, it can be anything

the question: Describe what you learned in every unit and whether or not you were able to
meet those expectations. (E.g. what are some topic(s) in each unit course that
you feel you understand well or skills you excelled at?).

Describe the evolution of a 20 M⊙ star. A H-R diagram must be drawn, and key aspects must be described in detail. Highlight how the star’s evolution will differ from that of the Sun

We have a simple harmonic motion that is described by the equation: ? (?) = 0.82cos (0.4? + 0.2) Determine the equation of v (t) and a (t).

Please answer these questions:

1) A man stands on the edge of the roof of a 15.0-m tall building and throws a rock with a speed of 30.0 m/s at an angle of 33.3⁰ above the horizontal. Ignore air resistance. Calculate: the total time that the rock spends in the air?

2) A ball is thrown upward at an unknown angle with an initial speed of 20.0 m/s from the edge of a 45.0-m-high cliff. At the instant the ball is thrown, a woman starts running away from the base of the cliff with a constant speed of 6.00 m/s. The woman runs in a straight line on level ground, and air resistance acting on the ball can be ignored. At what angle above the horizontal should the ball be thrown so that the runner catches it just before it hits the ground, and how far does the woman run before she catches the ball?

The majority of exoplanets are gas giants. Are rocky planets (Earth) rare? Explain.

Consider an electron at a distance of 0.053 nm from a proton. Take the origin of coordinates to be at the position of the proton. Let the electron be undergoing uniform circular motion.

A) Find the time-rate-of-change of the angular momentum of the electron.

B) Find the kinetic energy of the electron.

C) Find the potential energy of the electron.

D) Find the total energy of the electron.

According to the Faraday effect, it responds:
a) Explain what it is.
b) Find the index of refraction for right and left circular polarized light.
c) Determine the Verdet constant.
d) explain how it can be verified experimentally.

A stick is resting on a concrete step with 1/6 of its total length ? hanging over the edge. A single ladybug lands on the end of the stick hanging over the edge, and the stick begins to tip. A moment later, a second, identical ladybug lands on the other end of the stick, which results in the stick coming momentarily to rest at θ=62.1∘ with respect to the horizontal, as shown in the figure.

If the mass of each bug is 3.43 times the mass of the stick and the stick is 12.7 cm long, what is the magnitude of the angular acceleration ? of the stick at the instant shown?

Describe the process of convolving an image with a mask (kernel). How could the process be implemented in the (spatial) frequency domain?

Show that Maxwell's displacement current must be introduced to satisfy continuity equation using Gauss' Law, Ampere-Maxwell law and the fact that divergence of a curl of a vector is 0.