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alina1380 [7]
4 years ago
15

For a constant force, the impulse could be increased by: A.decreasing the distance. B.keeping the time the force acts constant.

C.increasing the time the force acts. D.none of the other answers.
Physics
1 answer:
Andre45 [30]4 years ago
5 0
C. Increasing the time of the force
This is because
Impulse = FΔt
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Describe or draw a picture of how the diagram of the sound wave shown above would change if the pitch became higher.
sergij07 [2.7K]
If the pitch was higher you would have to draw the dots waiver. You get it? 

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6 0
3 years ago
Have you ever purchased a product for the main reason that is environment-friendly?if not,why ?​
gtnhenbr [62]

Answer:

Yes.

Explanation:

Because the world already has so many environmental problems like global warming and pollution, just buying one eco-friendly product means you're helping the environment at that very second. So, why not just do it?

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1 year ago
The burner on an electric stove has a power output of 2.0 kW. A 650 g stainless steel tea kettle is filled with 20∘C water and p
True [87]

Answer:

The  value is    V  =  900 \  cm^3

Explanation:

From the question we are told that

  The  power output is  P_{out} =  2.0 \  kW  =  2.0 *10^{3} \  W

   The  mass of the steel is  m=  650 \  g  =  \frac{650}{1000}  =  0.650 \ kg

    The  temperature of the water is T  =  20^o C

     The  time take is  t  =  2.70 \  minutes =  2.70 *60  = 162 \  s

   

Generally the quantity of heat energy given out by the  electric stove is mathematically represented as

       Q =  P * t

=>    Q =  2.0 *10^{3}  * 162

=>     Q =  324000 \ J

This energy can also be mathematically represented as

    Q =   \Delta T  * m  c_s *  +  m_w  * c_w *  \Delta T

Here  c_s is the specific heat of stainless steel with value  c_s =  450\ J/C/kg

 tex]c_s[/tex] is the specific heat of water  with value  c_s =  4180\ J/C/kg

  m_w is the mass of water which is mathematically represented as

      m_w  =  \rho_w  *  V

=>   m_w  =  1000  *  V

So

   324000 =   (100 -20 )  * 0.650  * 450 *  + 1000V * 4180 *  (100-20)

    V  =  0.0008989 \  m^3

converting to cm^3

      V  =  900 \  cm^3

8 0
3 years ago
A standing wave with 5 loops is created on a string that is 0.75 m long. If the
Alex

wave velocity = frequency × wavelength

300 = frequency × 0.75

Frequency = 300÷0.75 = 400 HZ

6 0
3 years ago
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