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Sedbober [7]
3 years ago
15

What visible wavelengths will be constructively reflected if the film is surrounded by air on both sides?

Physics
1 answer:
Ronch [10]3 years ago
3 0
The visible wavelengths constructively reflected by the film when it is surrounded by air on both sides can be calculated using the equation:

lambda = 2t*(n2/n1)

where:

lambda is the wavelength,
t is the thickness, and;
n1 and n2 are indexes of refraction
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What is the most important thing to do before starting a strength training program?
lawyer [7]

Answer:

Explanation:

Whether you’re just getting started working out, or you’re looking to add strength training to your cardio routine, weight lifting for beginners can seem anything but simple. There’s a bunch of fitness equipment involved—how exactly do you use that big looped resistance band again?—the moves can be confusing, and you may worry that you might not have the strength to do them.

It’s true that weight lifting can appear intimidating—especially if you’re scrolling through social media and seeing people deadlifting double their bodyweight, pressing a loaded barbell over their head, or banging out Superman push-ups where they fly into the air. But it’s important to remember that those are just highlight reels of people who have been lifting for a very long time. When they first began, you can be pretty sure that they started small. Those explosive push-ups? It’s likely they started as a modified, knees-on-the-floor variation.

And strength training for beginners doesn’t have to start with the goal of getting you to that point, either. If you want to squat superheavy weight, beginning a strength training program can definitely help you get there. But it can also just help you get stronger in ways that will help you in everyday life, too, whether it’s carrying all the grocery bags into the house in one trip or squatting down to the floor to pick up your not-so-cuddly cat.

8 0
3 years ago
What is energy? write different type of energy with examples.
Rudik [331]

Answer:

In physics, energy is the quantitative property that must be transferred to a body or physical system to perform work on the body, or to heat it. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed.

Explanation:

..Mechanical the sum of macroscopic translational and rotational kinetic and potential energies

..Electric potential energy due to or stored in electric fields

..Magnetic potential energy due to or stored in magnetic fields

..Gravitational potential energy due to or stored in gravitational fields

..Chemical potential energy due to chemical bonds

..Ionization potential energy that binds an electron to its atom or molecule

..Nuclear potential energy that binds nucleons to form the atomic nucleus (and nuclear reactions)

..Chromodynamic potential energy that binds quarks to form hadrons

..Elastic potential energy due to the deformation of a material (or its container) exhibiting a restorative force as it returns to its original shape

..Mechanical wave kinetic and potential energy in an elastic material due to a propagated deformational wave

..Sound wave kinetic and potential energy in a fluid due to a sound propagated wave (a particular form of mechanical wave)

..Radiant potential energy stored in the fields of propagated by electromagnetic radiation, including light

..Rest potential energy due to an object's rest mass

..Thermal kinetic energy of the microscopic motion of particles, a form of disordered equivalent of mechanical energy

4 0
3 years ago
Read 2 more answers
The Apollo Lunar Module was used to make the transition from the spacecraft to the Moon's surface and back. Consider a similar m
ivolga24 [154]

Answer:

v=6.05 m/s

Explanation:

Given that,

Th initial velocity of the lander, u = 1.2 m/s

The lander is at a height of 1.8 m, d = 1.8 m

We need to find the velocity of the lander at impact. It is a concept based on the conservation of mechanical energy. So,

\dfrac{1}{2}mv^2-\dfrac{1}{2}mu^2=W\\\\\dfrac{1}{2}mv^2-\dfrac{1}{2}mu^2=F\times d\\\\\dfrac{1}{2}mv^2-\dfrac{1}{2}mu^2=mgd\\\\\dfrac{1}{2}m(v^2-u^2)=mgd\\\\v^2-u^2=2gd

v is the velocity of the lander at the impact

g is the acceleration due to gravity on the surface of Mars, which is 0.4 times that on the surface of the Earth, g = 0.4 × 9.8 = 3.92 m/s²

So,

v=\sqrt{u^2+2gd} \\\\v=\sqrt{(1.2)^2+2\times 9.8\times 1.8} \\\\v=6.05\ m/s

So, the velocity of the lander at the impact is 6.05 m/s.

6 0
3 years ago
if it is known that the toggle clamp is a machine, what assumptions can be made about it? check all that apply. (you must provid
muminat

A toggle clamp is a device that you employ, often but not exclusively as part of a production process, to firmly place components or parts in place.

Explain about toggle clamp.

A toggle clamp's main characteristics are its rapid action and ability to be easily turned on and off by an operator. Toggle clamps also lock in place firmly. Because of this, toggle clamps are frequently employed in production lines where components need to be held firmly and quickly removed during routine manufacturing procedures.

Toggle clamps with standard or light action are often constructed from components of pressed steel that have been zinc-plated.

Depending on the setting in which you work, Stainless Steel is another alternative for Toggle Clamp production. Stainless steel toggle clamps are frequently used in regulated areas where hygiene is crucial, such as the food industry and the pharmaceutical business.

To know more about toggle clamps use link below:

brainly.com/question/20729246

#SPJ4

7 0
2 years ago
What is another word for a change in velocity/change in time
inna [77]

Answer:

acceleration

Explanation:

acceleration =velocity final-velocity initial /time

5 0
3 years ago
Read 2 more answers
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