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frutty [35]
3 years ago
13

There are 13 boys are 4 girls in the jazz band find the ratio of the number of boys in the band to the total number of students

in the band
Physics
1 answer:
Nikitich [7]3 years ago
7 0
13:17 b/c 13 + 4 =17...
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The velocity of a 10.0 kg object that has 720 J of kinetic energy is m/s. (Report the answer to two significant figures.)
nikdorinn [45]
Kinetic energy<span> is the </span>energy<span> of motion. An object that has motion - whether it is vertical or horizontal motion - has </span>kinetic energy<span>. It is expressed as:

KE = mv^2 /2

720 = 10.0v^2 /2
v = 12 m/s

Hope this answers the question. Have a nice day.</span>
4 0
3 years ago
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The spaceship Intergalactica lands on the surface of the uninhabited Pink Planet, which orbits a rather average star in the dist
Sidana [21]

Complete Question

The spaceship Intergalactica lands on the surface of the uninhabited Pink Planet, which orbits a rather average star in the distant Garbanzo Galaxy. A scouting party sets out to explore. The party's leader–a physicist, naturally–immediately makes a determination of the acceleration due to gravity on the Pink Planet's surface by means of a simple pendulum of length 1.08m. She sets the pendulum swinging, and her collaborators carefully count 101 complete cycles of oscillation during 2.00×102 s. What is the result? acceleration due to gravity:acceleration due to gravity: m/s2

Answer:

The acceleration due to gravity is  g = 167.2 \ m/s^2  

Explanation:

From the question we are told that

     The length of the simple pendulum is L = 1.081.08 \ m

      The number of cycles is  N =  101

       The time take is  t =  2.00 *10^{2 \ }s

Generally the period of this oscillation is mathematically evaluated as

         T = \frac{N}{t }

substituting values

         T = \frac{101}{2.0*10^2 }

        T = 0.505 \  s

The period of this oscillation is mathematically represented  as

               T = 2 \pi \sqrt{\frac{l}{g} }

making g the subject of the formula we have

              g = \frac{L}{[\frac{T}{2 \pi } ]^2 }

              g = \frac{4 \pi ^2 L }{T^2 }

Substituting values

               g = \frac{4 * 3.142 ^2  * 1.08 }{505.505^2 }

               g = \frac{4 * 3.142 ^2  * 1.08 }{0.505^2 }  

              g = 167.2 \ m/s^2  

7 0
3 years ago
Celina has a water sample that's contaminated with salt and microorganisms. Which method should she use to purify the water.
sergiy2304 [10]
She should filter the water with carbon and oxygen
7 0
3 years ago
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Which of the following is not a tectonic activity?
viktelen [127]

Answer:

Erosion of Mountains

Explanation:

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Electric Charge
alina1380 [7]

The materials that are conductors are Metal doorknob, Silver, Gold, Copper, Metal coat hanger, Paper clip, while insulators are Carpet, Wood, Rubber, Bulletin board, Clothing, Plastic.

<h3>What are electric conductors?</h3>

Conductors are materials that allow electric current to pass through them.

<h3>What are Insulators?</h3>

Insulators are materials that do not allow electric current to pass through them.

<h3>Examples of conductors</h3>
  • Metal doorknob
  • Silver
  • Gold
  • Copper
  • Metal coat hanger
  • Paper clip
<h3>Examples of insulators</h3>
  • Carpet
  • Wood
  • Rubber
  • Bulletin board
  • Clothing
  • Plastic

Learn more about conductors and insulators here: brainly.com/question/492289

4 0
2 years ago
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