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Alexandra [31]
3 years ago
8

Match the description to the property.

Physics
1 answer:
Blizzard [7]3 years ago
4 0

Answer:transverse- transfers energy perpendicular to the direction of the wave

Electromagnetic- dose not require a medium for transition

Mechanical - requires a medium for transmission

Longitudinal- transfers energy parallel to the direction of the wave

Explanation: just took the activity

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Phương trình trạng thái tổng quát của khí lí tưởng diễn tả là​
tatyana61 [14]

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pV/T=const goodluke

6 0
3 years ago
A baseball player leads off the game and hits a long home run. The ball leaves the bat at an angle of 70.0 from the horizontal w
professor190 [17]

Answer: 211.059 m

Explanation:

We have the following data:

\theta=70\° The angle at which the ball leaves the bat

V_{o}=55 m/s The initial velocity of the ball

g=-9.8 m/s^{2} The acceleration due gravity

We need to find how far (horizontally) the ball travels in the air: x

Firstly we need to know this velocity has two components:

<u>Horizontally:</u>

V_{ox}=V_{o}cos \theta (1)

V_{ox}=55 m/s cos(70\°)=18.811 m/s (2)

<u>Vertically:</u>

V_{oy}=V_{o}sin \theta (3)

V_{oy}=55 m/s sin(70\°)=51.683 m/s (4)

On the other hand, when we talk about parabolic movement (as in this situation) the ball reaches its maximum height just in the middle of this parabola, when V=0 and the time t is half the time it takes the complete parabolic path.

So, if we use the following equation, we will find t:

V=V_{o}+gt=0 (5)

Isolating t:

t=\frac{-V_{o}}{g} (6)

t=\frac{-55 m/s}{-9.8 m/s^{2}} (7)

t=5.61 s (8)

Now that we have the time it takes to the ball to travel half of is path, we can find the total time T it takes the complete parabolic path, which is twice t:

T=2t=2(5.61 s)=11.22 s (9)

With this result in mind, we can finally calculate how far the ball travels in the air:

x=V_{ox}T (10)

Substituting (2) and (9) in (10):

x=(18.811 m/s)(11.22 s) (11)

Finally:

x=211.059 m

8 0
3 years ago
According to Freud, adults fixated in which stage could feel constantly out of control?
yarga [219]

 <span>AnalStage. </span>According to Freud, a<span>dults fixated in this area could feel constantly out of control or could need to be in control all the time. Pleasure focus is on the anus, which occurs when a child learns to control bladder and bowel movements. Fixation in this area can be caused from struggles during potty training.</span>

6 0
3 years ago
What is the speed of the animal from 0-20s? <br><br> 50 m/s<br> 0.4 m/s<br> 20 m/s<br> 2.5 m/s
Shkiper50 [21]

Answer:

2.5 m/s

Explanation:

The speed of the animal is given by the ratio between the distance travelled by the animal and the time elapsed:

v=\frac{d}{t}

where d is the distance travelled and t the time elapsed. Note that this quantity is also equal to the slope of the curve.

In the time interval 0-20 s, we have

d = 50 m - 0 m = 50 m

t = 20 s - 0 s = 20 s

So, the speed is

v=\frac{50 m}{20 s}=2.5 m/s

3 0
3 years ago
Elements from which two groups in the periodic table would most likely combine
Katarina [22]
The answer is actually 1 & 17, maybe you meant to put 1&17 as option b
8 0
2 years ago
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