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nlexa [21]
3 years ago
8

Calculate the change in time for each quarter of the track. Record the change in time in Table E of your Student Guide. The chan

ge in time for the first quarter is seconds. The change in time for the second quarter is seconds. The change in time for the third quarter is seconds. The change in time for the fourth quarter is seconds.

Physics
2 answers:
kipiarov [429]3 years ago
7 0

Answer:

1.39

0.78

0.64

0.54

Explanation:

The answers are an average of the difference between times. The first one is different because it's the first checkpoint.

For example;

\frac{(2.19 - 1.38) + (2.14 - 1.39) + (2.2 - 1.41)}{3}

\frac{.81 + .75 + .79}{3}

\frac{2.35}{3}

Divide 2.35 by 3, you get the answer, .78 seconds.

RUDIKE [14]3 years ago
3 0

The three pictures you attached represent three different runs of the toy car.

Here's the data for the first run:

The change in time for the first quarter is <em>1.38</em> seconds.

The change in time for the second quarter is (2.19-1.38) = <em>0.81</em> seconds.

The change in time for the third quarter is (2.80 - 2.19) =  <em>0.61</em> seconds.

The change in time for the fourth quarter is (3.31 - 2.80) = <em>0.51</em> seconds.

The quarters are all the same length, but the times are getting shorter.

The car must be getting faster !  

Maybe gravity is pulling it down, do ya reckon ?

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A boy is listening to the radio. The loudspeaker plays a musical note by vibrating 256 rimes esch second. How many times does th
Svet_ta [14]

Answer:

 f_tympanum = 256 Hz.

Explanation:

The eardrum is the vibrating membrane of the human ear, it works by resonance, that is, an external stimulus (force) makes it vibrate, as the eardrum is extremely light it can vibrate at the same frequency of the incident sound.

Consequently if the incident vibration is f = 256 hz, the eardrum resonates at the same frequency

            f_tympanum = 256 Hz.

As a reference the response of the eardrum goes from f = 20 Hz f = 20000 Hz

6 0
4 years ago
Please help me on this position-time graph assignment!!!
saw5 [17]

\text{Hello there! :)}

\text{The velocity is essentially the slope of the graph in a position vs. time graph, so:}

\text{Given: From 0 - 8 sec, velocity of 10 m/s.}\\\\\text{From 8 - 18 sec, velocity of -5 m/s. (In opposite direction because of the negative sign)}\\\\\\\text{From 18 - 22 sec, velocity of 0 m/s. (Object at rest)}\\\\\text{From 22 - 24 sec, velocity of 5 m/s.}\\\\\text{Graph the position vs. time graph using the velocities as the slope of the line }

6 0
4 years ago
Which of the following is true regarding the properties of light?
Ivanshal [37]

Light having a dual nature and acting like both a wave and a particle is the correct statement in this scenario.

<h3>What is Light?</h3>

This refers to the electromagnetic radiation found in the electromagnetic spectrum that is perceived by the human eye and has a dual nature. It doesn't require a medium for its propagation unlike sound.

The dual nature of light is as a result of it behaving like a photon which is why it travels in straight lines.

It also behave like a wave because it undergoes processes such as reflection, refraction etc which are common to waves.

Read more about Light here brainly.com/question/1363382

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6 0
2 years ago
A basketball with mass of 0.8 kg is moving to the right with velocity 6 m/s and hits a volleyball with mass of 0.6 kg that stays
IceJOKER [234]

Answer:

26.67 m/s

Explanation:

From the law of conservation of linear momentum, the initial sum of momentum equals the final sum.

p=mv where p is momentum, m is the mass of object and v is the speed of the object

Initial momentum

The initial momentum will be that of basketball and volleyball, Since basketball is initially at rest, its initial velocity is zero

p_i= m_bv_b+m_vv_v=8*6+0.6*0=48 Kg.m/s

Final momentum

p_f= m_bv_b+m_vv_v=8*4+0.6*v_v=32+0.6v Kg.m/s\\32+0.6v_v=48\\0.6v=16\\v_v=16/0.6=26.66666667\approx 26.67 m/s

4 0
3 years ago
The units of Work, Energy and power are________ ________units.
meriva

Answer:

the units of work and energy is joule and unit of power is Watt

4 0
2 years ago
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