A 3.7 kg object is lifted to a Hight of 3 meters what is the potential energy of this object

Answers

Answer 1
Answer: Gravitational potential energy = (mass) x (gravity) x (height)

PE = (3.7) x (9.81) x (3)
= 108.89 kilogram-meters²/second
= 108.89 newton-meters
= 108.89 joules

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Two large crates, with masses 640kg and 490kg , are connected by a stiff, massless spring (K=8.1kN/m) and propelled along an essentially frictionless, level factory floor by a force applied horizontally to the more massive crate. If the spring compresses 5.1 from its equilibrium length, what is the applied force? Express your answer using two significant figures. The answer is suppose to be 950N

A positive charge is placed in an electric field that points west. What direction is the force on the positive particle?

Answers

A positive charge is placed in an electric field that points west. the direction of the force on the positive particle point toward the west.

What is an electric charge?

Due to the physical characteristic of electric charge, charged material experiences a force when it is exposed to an electromagnetic field. Electric charges can be positive or negative (commonly carried by protons and electrons respectively). While like charges repel one another, opposite charges attract. If an object has no net charge, we refer to it as neutral.

The charge on one electron is -1.6 ×10⁻¹⁹ coulomb.

As given in the problem statement when a positive charge is placed in an electric field that points west. the direction of the force on the positive particle will also point toward the west because for a positively charged

particle the direction of the electric field is the same as the force.

Thus, a positive charge is introduced into a westward-pointing electric field. the force acting on the positive particle points westward

Learn more about an electric charge from here

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The direction of the electric field is defined as the direction of the force on a
positive charge immersed in the field. The force on the particle points west.

I need help with the following three physics problems please!

Answers

None of these is a Physics problem. The numbers, and the fractions that
they appear in, might have come from Physics problems, but these are
nothing more than arithmetic exercises, and they can be whipped out
in a hurry with a little bit of fancy calculator work.  You don't have to
know any Physics in order to answer any of these. 

The first one is 2.7 x 10⁻²⁴ Newton.

Explain the difference between mass and weight for objects on earth and on the mooon

Answers

Explanation:

The amount of matter contained inside a body is called its mass while the weight of a body is the gravitational force with which it is attracted towards the earth.

Weight, W = mg

m is the mass and g is acceleration due to gravity  

The mass of the object on the moon remains the same but the weight of the body is reduced to one sixth. This is because the moon's gravity is less than the earth's gravity.            

Hence, this is the main difference in the weight of the object on the earth and on the moon.                                    

Mass stays the same no matter what, weight however is affected by gravity and will be different on the moon than on earth.

Which of the following is true of iambic pentameter?a. It has 14 syllables per line.
b. It is divided into a pair of fives.
c. It has a stressed syllable followed by an unstressed syllable.
d. It is present in both Italian sonnets and Shakespearean sonnets.

Answers

a).  No. "Pentameter" has 10 syllables per line.

b).  No.  This choice doesn't mean anything.

c).  No.  This is the description of a trochee, not an iamb.

d).  I don't know anything about Italian sonnets.  But I do know that
Shakespeare used iambic pentameter, and the other choices have
been eliminated, so I'll go with this one.  (the "multiple-guess" method)

PLEASE HELP :/george walks to a friend's house. he walks 750 meters north, then realizes he walked too far he turns and walks 250 meters south. the entire walk takes him 50 seconds whats his distance and displacement?​

Answers

As U asked this question twice sry not twice 4 times.. I have been answered the question..Just look there..

Tq

Evelyn learns that a sound wave can be recorded electronically as an analog signal or as a digital signal. She investigates these two signal types. She records her voice using a tape recorder, which uses an analog signal to produce sound when played back. She also records her voice using a computer, which uses a digital signal to produce sound when played back. Evelyn replays each recording 100 times.a. Describe a difference that Evelyn would most likely hear between the two recordings after being replayed 100 times.

b. Explain why the two recordings would sound different after being replayed 100 times.

Answers

Answer:

can u help me with this too, i currently have it in an assignment and i dont know the answer

Explanation:

Final answer:

Analog signals physically degrade each time they are played, causing a decrease in sound quality. Digital signals, however, will not experience any quality decline when being replayed multiple times because they are stored in binary form.

Explanation:

a. After being replayed 100 times, a major difference that Evelyn would most likely hear between the two recordings is that the analog recordings might have a loss in sound quality, and are likely to sound a bit more worn down or degraded. The digital recording, on the other hand, would sound just as it did the first time, having a high quality, and no loss of detail.

b. The reason for the difference in degradation is largely because of the nature of the two types of signals. An Analog signal is continuous and is an accurate representation of the sound wave as it varies in amplitude over time. However, an analog recording such as a tape, physically degrades each time it is played. Noise begins to rise while a decline in high-frequency content seems to appear. Digital signals, which are quantized representations of those same sound waves, do not degrade over time, because information is essentially coded in binary form. So, unless the file itself is damaged or corrupted, playing it back any number of times won't diminish its quality.

Learn more about Analog vs Digital Signals here:

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