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3 years ago

Why is it important not to present a biased argument as a public speaker?

Physics

1 answer:

UNO [17]3 years ago

4 0

Answer:

Explanation:

a) because it's immoral as you're trying to convince people of your views when you should be giving both sides of the story so people are able to come up with their own opinions on what you're talking about

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What is thermodynamics?

rusak2 [61]

Answer:

The branch of physical science that deals with the relations between heat and other forms of energy (such as mechanical, electrical, or chemical energy), and, by extension, of the relationships between all forms of energy.

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4 years ago

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Why is there no overall electrical charge on an aluminium atom?

uranmaximum [27]

The electrical charge of particles. The total number of electrons in an atom is always the same as the number of protons in the nucleus. This means atoms have no overall electric charge. The number of protons in an atom is called its atomic hater number.

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4 years ago

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Lottery balls are thrown into a hopper and are set into motion by air forced through the container. each ball has a mass of 0.00

Marina CMI [18]

In this three body system total kinetic energy remains constant:
$E_{k} = constant =0.0268 J$

$E_{k} = E_{k1}+ E_{k2}+ E_{k3}$
If we assume that upwards movement is positive and downwards movement is negative the formula is:
$E_{k} = E_{k1}- E_{k2}+ E_{k3}$

Formula for kinetic energy is:
$E_{k} = \frac{m v^{2} }{2}$

Now we have:
$E_{k} = \frac{m v_{1} ^{2} }{2} -\frac{m v_{2} ^{2} }{2} +\frac{m v_{3} ^{2} }{2} \\ E_{k} = \frac{m}{2} (v_{1} ^{2}-v_{2} ^{2}+v_{3} ^{2}) \\ \\ 0.0268= \frac{0.0044}{2} (1.3 ^{2}-1.66^{2}+v_{3} ^{2}) \\ \\ 0.0536=0.0022(1.69-2.7556+v_{3} ^{2}) \\ \\ v_{3} ^{2}=25.43 \\ \\ v_{3} =+-5.04$

We got two solutions: positive and negative. The speed is 5.04 m/s and direction can be upwards and downwards.

3 0

3 years ago

You are standing in a moving bus, facing forward, and you suddenly fall forward as the bus comes to an immediate stop. The force

Leviafan [203]

Answer:

Explanation:

Static friction is a force that keeps an object at rest. It must be overcome to start moving the object. Once an object is in motion, it experiences kinetic friction.

8 0

4 years ago

An amusement park ride consists of a car moving in a vertical circle on the end of a rigid boom of negligible mass. The combined

frez [133]

Explanation:

As the force is given as 5.30 kN or $5.30 \times 1000 N$ . Hence, mass will be calculated as follows.

$F_{w}$ = mg

$5.30 \times 10^{3} = m \times 9.8 m/s^{2}$

m = 540.816 kg

(a) At the top, centripetal force $F_{c}$ is acting upwards and the weight of the riders and car, $F_{w}$ will be acting downwards.

Therefore, force on the car by the boom will be calculated as follows.

$F_{B} = F_{w} - F_{c}$

or, $F_{B} = mg - \frac{mv^{2}}{r}$

= $5.30 \times 1000 N - \frac{540.816 kg \times (3.60)^{2}}{12}$

= 4715.919 N

Hence, the force $F_{B}$ on the car from the boom is 4715.919 N. This means that the car will be hanging on the boom and the boom will exert an upward force.

(b) Now at the top, centripetal force $F_{c}$ will be acting upwards and the weight of cars and car riders will be acting in the downwards direction.

Hence, we will calculate the force on car by the boom as follows.

$F_{B} = F_{w} - F_{c}$

or, $F_{B} = mg - \frac{mv^{2}}{r}$

= $5.30 \times 1000 N - \frac{540.816 kg \times (14.0)^{2}}{12}$

= -3533.33 N

Therefore, car will be pushing on the boom and the boom will exert a downward force.

3 0

3 years ago