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kolezko [41]
3 years ago
5

Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional

questions.
Online Content: Site 1

According to research, which method of reinforcement is generally regarded as the most powerful? Why?
Physics
2 answers:
kenny6666 [7]3 years ago
7 0

Answer:

Positive reinforcement is considered the most powerful because people respond best to it. Positive reinforcement strengthens or increases a behavior due to the addition of a reward. Researchers believe this may be because it is easier to process the addition of a positive response or reward for a given behavior (positive reinforcement) than the removal of an unwanted response for the same behavior (negative reinforcement).  The gold star as a reward is much more effective than punishing a child who repeatedly runs ahead or does not line up for recess.

Explanation:

I got 100%

Nostrana [21]3 years ago
5 0

Answer: After a successful military career, Tiberius Gracchus went into politics trying to bring massive reforms to the military to its strength and morale.  

In the last hundred years, there had been several wars. Since the standard time served in the Roman army was twenty years, often times soldiers would leave their farms in the hands of wives and children. As farms in this situation went steadily into bankruptcy and were bought up by the wealthy upper class, latifundi or large estates, were formed.  

When the soldiers returned they had no where to go, so they went to Rome to join the mob of thousands of unemployed who roamed the city. Faced with this, the option of joining the army was unattractive, and number of soldiers and thus the power of Rome was shrinking.  

In 133 BC Tiberius proposed a law called Lex Agraria saying that the government would buy the land owned by the Patricians in excess of 500 acres. This land would then be distributed to soldiers upon completion of their service. This would solve two problems, attracting new recruits and also taking care of homeless war veterans.  

There was no question that the Patricians would get reimbursed because the Senate approved finances and they were also the ones who held most of the land. However, the bill was still unfeasible because there was not enough money currently to reimburse the Patricians without disrupting other activities. Then by chance that same year, king Attalus[?] of Pergamon died and left his entire fortune to Rome. Tiberius proposed that Attalus� fortune be used to fund the new law.  

Tiberius was one tribune and then there was one other. Each tribune had the power to veto the law, thus both had to agree. As Tiberius proposed the bill to the Senate, the other tribune threatened to veto, so Tiberius had him removed from the Senate so that he would be unable to deliver the veto, and the bill became law. However Tiberius offeneded many in the Senate with his personality, and as a result a group of Senators and their supporters killed Tiberius with a group of followers in the streets of Rome.  

This represents the first instance where the man with the most thugs was the one to gain power. This set a dangerous precedent, one that would signal the long decline of the republic of Rome

Explanation: i got an 100%

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If an object has a mass of 1417g and it is moved 47 meters in 90 seconds, how much power was used?
astraxan [27]

Mass of the object is given as

m = 1417 g = 1.417 kg

now the speed of object is given as

v = \frac{d}{t}

here we know that

d = 47 m

t = 90 s

now we will have

v = \frac{47}{90} = 0.52 m/s

now we will have kinetic energy of the object as

KE = \frac{1}{2}mv^2

KE = \frac{1}{2}(1.417)(0.52)^2

KE = 0.19 J

now the power is defined as rate of energy

so here we can find power as

P = \frac{KE}{t}

P = \frac{0.19}{90} = 2.14\times 10^{-3} W

so above is the power used for the object

3 0
3 years ago
Grindstone: Rotational Dynamics and Kinematics You have a grindstone (a disk) that is 133.0 kg, has a 0.635 m radius, and is tur
Colt1911 [192]

Answer:

Ff = 839.05 N

Explanation:

We can use the equation:

Ff = μ*N

where <em>N</em> can be obtained as follows:

∑ Fc = m*ac   ⇒   N - F = m*ac = m*ω²*R    ⇒  N = F + m*ω²*R

then if

F = 32 N

m = 133 Kg

R = 0.635 m

ω = 95 rev /min = (95 rev / min)(2π rad / 1 rev)(1 min / 60 s) = 9.9484 rad /s

we get

N = 32 N + (133 Kg)*(9.9484 rad /s)²*(0.635 m) = 8390.53 N

Finally

Ff = μ*N = 0.10*(8390.53 N) = 839.05 N

3 0
3 years ago
A ball is thrown vertically upwards with an initial velocity of 20.00 m/s. Neglecting air resistance, how long is the ball in th
algol [13]

Answer:

1) The greatest height attained by the ball equals 20.387 meters.

2) The time it takes for the ball to reach 15 meters approximately equals 1 second.

Explanation:

The greatest height will be attained when the ball stop's in the air and starts falling back to the earth.

thus using third equation of kinematics we obtain the height attained as

v^2=u^2+2as

where

'v' is the final speed of the ball

'u' is the initial speed of the ball

'a' is the acceleration that the ball is under which in this case equals 9.81 m/s^{2}

's' is the distance it covers

Thus for maximum height applying the values in the equation we get

0=20^{2}-2\times 9.81\times h\\\\\therefore h=\frac{20^{2}}{2\times 9.81}=20.387meters

Using the same equation we can find the speed of the ball when it reaches 15 meters of height as  

v^2=20^{2}-2\times 9.81\times 15\\\\v^{2}=105.7\\\\\therefore v=10.28m/s

the time it takes to reduce the velocity to this value can be found by first equation of kinematics as

v=u+at\\\\t=\frac{v-u}{a}\\\\t=\frac{10.28-20}{-9.81}=0.991seconds\approx 1second

4 0
4 years ago
Mixing of sand in water is an irreversible change true aur false​
USPshnik [31]

Answer:

<h3>true</h3>

Explanation:

<h3>hope it helps you ❤️</h3><h3>happy to help</h3>
3 0
3 years ago
An island reports that in the year 2000 there were 240 babies born. That same year, 100 individuals died.
lyudmila [28]

Answer:

+ 140

Explanation:

You can show the natural growth rate by subtracting the death rate from the birth rate during one year and converting this into a percentage.

Here it would be:

240 - 100 = + 140

// if you want to convert it to percentage, you need to know the size of the population

it would be

140 / (population size) * 100 %

4 0
3 years ago
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