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irina1246 [14]
3 years ago
6

A 1000-kg car rolling on a smooth horizontal surface ( no friction) has speed of 20 m/s when it strikes a horizontal spring and

is brought to rest in a distance of 2 m What is the spring’s stiffness constant?
Physics
1 answer:
spayn [35]3 years ago
6 0

Explanation:

kinetic energy was converted to potential energy in the spring.

the answer is in the above image

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A(n) ________ microscope keeps an object in focus when the objective lens is changed.
Anvisha [2.4K]

Parfocal is the term used to describe a microscope that maintains focus when the objective lenses are replaced.

<h3>What is the name of the objective lens ?</h3>

For observing minute features within a specimen sample, a high-powered objective lens, often known as a "high dry" lens, is perfect. You can see a very detailed image of the specimen on your slide thanks to the 400x total magnification that a high-power objective lens and a 10x eyepiece provide.

The four objective lenses on your microscope are for scanning (4x), low (10x), high (40x), and oil immersion (100x).

The first-stage lens used to create a picture from electrons leaving the specimen is referred to as the "objective lens." The objective lens is the most crucial component of the imaging system since the quality of the images is determined by how well it performs (resolution, contrast, etc.,).

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6 0
2 years ago
In a series circuit, loads which have the same voltage dropped across them will have ? .
Nadusha1986 [10]
The same as the voltage in all bulbs. The series circuit is a pattern of the circuits in which the loads will have the same amount of power and consumed  voltage. If one load goes out, the others will turn off also. This is because they have connected wires and pattern.
5 0
3 years ago
Is electricity a compound, element, or a mixture?
sveta [45]
Electricity is a compound
3 0
4 years ago
A star with a parallax angle of 0.39" (arcsecond) is what distance away? Give your answer in units of parsecs.
postnew [5]

Answer:

2.56 parsec

Explanation:

Parallax angle is the angle subtended by Earth over a gap of 6 months in its orbital path around the Sun with respect to a star. It can be used to measure the distance to the star.

d (parsec)=\frac{1}{p (arcsecond)}

Given: p = 0.39"

Substitute the value:

d =\frac{1}{0.39"}=2.56 parsec          

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