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jok3333 [9.3K]
2 years ago
6

The velocity of an object with mass = 2kg is given as a function of time:

Physics
1 answer:
Musya8 [376]2 years ago
8 0

Answer:

The force acting on the object at t = 2\,s is \vec F = (4, 32)\,[N].

Explanation:

Given that object has a constant mass in time, the force acting on the object (\vec F), in newtons, is defined by following expression:

\vec F = m\cdot \vec a (1)

Where:

m - Mass, in kilograms.

\vec a - Acceleration, in meters per square second.

By definition of acceleration, we know that:

\vec a = \frac{d}{dt} \vec v (2)

Let suppose that given vector velocity is expressed in meters per second. If we know that m = 2\,kg, \vec v = (2\cdot t, 4\cdot t^{2})\,\left[\frac{m}{s} \right] and t = 2\,s, then the force acting on the object is:

\vec a = (2, 8\cdot t)\,\left[\frac{m}{s^{2}} \right]

\vec F = (4, 16\cdot t)\,[N]

\vec F = (4, 32)\,[N]

The force acting on the object at t = 2\,s is \vec F = (4, 32)\,[N].

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Answer:

A. respiration.

Explanation:

Cellular respiration can be defined as a series of metabolic reactions that typically occur in cells so as to produce energy in the form of adenosine triphosphate (ATP). During cellular respiration, high energy intermediates are created that can then be oxidized to make adenosine triphosphate (ATP). Therefore, the intermediary products are produced at the glycolysis and citric acid cycle stage.

Additionally, mitochondria provides all the energy required in the cell by transforming energy forms through series of chemical reactions; breaking down of glucose into Adenosine Triphosphate (ATP) used for providing energy for cellular activities in the body of living organisms.

Basically, oxygen goes into the body of a living organism such as plants, humans and animals when they breathe while glucose is absorbed by the body when they eat.

Hence, the conversion of sugar to energy in the presence of oxygen is respiration.

8 0
2 years ago
A container of gas is held at a constant volume. Which will most likely happen to the temperature if the pressure of the gas inc
sergij07 [2.7K]

Answer:

With more particles there will be more collisions and so a greater pressure. The number of particles is proportional to pressure, if the volume of the container and the temperature remain constant. ... This happens when the temperature is increased.

Explanation:

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A testing instrument that's used to measure electrical signals in a circuit and display them as waveforms on a screen is called
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A testing instrument that's used to measure electrical signals
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8 0
3 years ago
What does the prefix for kilo- mean
artcher [175]
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Good luck on your assignment and enjoy your day!

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3 years ago
When the electron is moving in the plane of the page in the direction indicated by the arrow, the force on the electron is direc
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Answer: F

Out of the page.

Explanation:

For an electron with a charge of -e, the magnitude of the force on it is F = BeV

Where

F = force on the electron

e = charge ( electrons )

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B = magnetic field

F is the force acting on all the electrons in a wire which gives rise to the F = BIL

Where

I = current

L = length of the wire

The force F is always at the right angle to the particle's velocity and its direction can be found using the left hand rule.

When the electron is moving in the plane of the page in the direction indicated by the arrow, the force on the electron is directed out of the page.

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2 years ago
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