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stira [4]
3 years ago
5

The D.A.R.E. program (“Drug Abuse Resistance Education”) began in 1983. In this program, police officers taught special 45-minut

e lessons in classrooms about the dangers of drugs. However, the program was shown to have very little effect; there was only a small, short-term reduction in tobacco use, but no reduction in alcohol or marijuana use. Long-term rates of teen substance abuse did not change significantly.
In 1998, behavioral scientists began looking for different ways to teach this program. The new D.A.R.E. curriculum is called “keepin’ it REAL,” and students spend most of their time practicing refusal strategies with friends rather than being lectured on the possible effects of drugs. The “REAL” acronym stands for the four main strategies the students practice: Refuse, Explain, Avoid, and Leave. There is also much more emphasis on teaching students how to make safe and responsible decisions in all areas of life.

This approach has been shown to be much more effective. Studies of thousands of students show that those who have been through the program use drugs and alcohol less than students who have not been through the program. Additionally, those who were already abusing substances before beginning the program were more likely to stop using the substances. The effects on students’ antidrug attitudes also lasted much longer.

Based on the excerpt, which statement is true?

Antidrug campaigns have little effect on how much students use drugs.
Lots of students use tobacco, but very few use alcohol or marijuana.
Antidrug campaigns can help prevent substance abuse, but cannot reduce it.
Practicing refusal strategies can help students stay sober.
Physics
1 answer:
melisa1 [442]3 years ago
7 0

Answer:

the correct answer is practicing refusal strategies can help students stay sober

Explanation:

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A ball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and pa
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The ball takes 0.2 sec to travel the height of the window, which is 2 m.

 Then the speed of the ball at that time was

v = \frac{d}{t}

v = \frac{2}{0.20}

v = 10\ \frac{m}{s}

We know that:

v = v_0 -gt

Where v_0 is the initial velocity.

So:

10 = v_0 -9.8(2)

10 + 9.8(2) = v_0

v_0 = 29.6\ m / s

Then we have the equation for the position as a function of time.

r = r_0 + v_0t - \frac{1}{2}gt^2

Where

r_0 = initial position

r = position as a function of time

v_0 = initial velocity

g = acceleration of gravity

t = time.

If the ball is thrown from the ground then:

r_0 = 0 m

We want to find now the distance between the window and the ground.

When the ball reaches the bottom of the window t = 1.8s

So:

r = 0 + 29.6(1.8) - 0.5(9.8)(1.8)^2

r = 37,404 m

The window is 37,404 m high

Finally, to know how high the ball rises we must know at what moment the vertical velocity of the ball is zero.

v = v_0 -gt\\\\0 = v_0 -gt\\\\gt = v_0\\\\t = \frac{29.6}{9.8}

t = 3.02\ s

Now we replace t in the position equation

r = 0 + 29.6(3.02) -0.5(9.8)(3.02)^2

r = 44.70\ m

The ball reaches up to 44.70 m in height.

3 0
3 years ago
In what direction does the induced current flow in the loop?
bogdanovich [222]

Answer:

Clockwise and counter clockwises, depands.

Explanation:

The direction of current in a loop of wire in a magnatic field depands on the direction in which the loop is moved and the applied magnatic field.

this is determined by what is called right hand rule.

I will give one scenario, let's say that the loop is moved upwards and the applied magnatic field is into the page (if you drew the loop in 2D on a piece of paper), in this case the direction would be clockwise.

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3 years ago
Increasing the number of loops in a electromagnet or solenoid will cause it to be stronger
Zielflug [23.3K]
True

The electromagnet will become stronger if we add more coils because there are more field lines in a loop then there is in a straight piece of wire. In a solenoid there are a lot of loops and they are concentrated in the middle, as more loops are added the field lines get larger, therefore making the electromagnet stronger.
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3. The atmospheres of Mars and Venus are mostly carbon dioxide. Earth'satmosphere contains only a fraction of a percent of carbo
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Answer:

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Explanation:

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I think The coastal areas were highly polluted

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