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d1i1m1o1n [39]
3 years ago
12

Which one A, B, C, D or the last one?

Physics
1 answer:
Finger [1]3 years ago
8 0

Answer:

C

Explanation:

Answer is C.

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Each wheel of a 320 kg motorcycle is 52 cm in diameter and has rotational inertia 2.1 kg m2 . The cycle and its 75 kg rider are
Amiraneli [1.4K]

Answer:

The value is  h  = 32.91 \  m

Explanation:

From the question we are told that

    The diameter of each wheel is  d =  52 \ cm  =  0.52 \  m

    The mass of the motorcycle is  m  =  320 \ kg

    The rotational kinetic inertia is  I  =  2.1 \  kg \  m^2

    The  mass of the  rider is  m_r =  75 \ kg

     The  velocity is  v  =  85 \  km/hr = 23.61 \  m/s

      Generally the radius of the wheel is mathematically represented as

      r =  \frac{d}{2}

=>     r =  \frac{0.52}{2}

=>    r =  0.26 \  m

Generally from the law of energy conservation

     Potential energy  attained  by  system(motorcycle and rider )  =  Kinetic  energy of the system  +  rotational kinetic energy of  both wheels of the motorcycle

=>  Mgh  =  \frac{1}{2}  Mv^2  +   \frac{1}{2}  Iw^2  +  \frac{1}{2}  Iw^2

=>    Mgh  =  \frac{1}{2}  *  Mv^2  +  Iw^2

Here  w is the angular velocity which is mathematically represented as

     w =  \frac{v }{r }

So

    Mgh  =  \frac{1}{2}  *  Mv^2  +  I \frac{v}{r} ^2

Here M  =  m_r +  m

         M  =  320 + 75

          M  = 395 \  kg

395 *  9.8 *  h  =   0.5    *   395 *  (23.61)^2 +  2.1  *[\frac{ 23.61}{ 0.26} ] ^2

=>   h  = 32.91 \  m

   

7 0
4 years ago
Describe how the wavelength of a wave changes if the wave slows down but its frequency does not change.
babunello [35]

Answer:

If the wave slows down with no change in frequency, the wavelength decreases.

3 0
3 years ago
Heat is the transfer of thermal energy from one object to another because of a difference in
svetoff [14.1K]
I believe its temperature because when something has high temperature it has more thermal energy and when something has low temperature, it has less thermal energy. Hope that helped ^-^
8 0
3 years ago
There are pluses and minuses to being a competitive person.<br> True <br> False
melomori [17]
True, because being a competitive person means that you like challenging yourself to do more things, but if you’re really competitive you might challenge yourself too hard, and might hurt yourself, which will make you not want to really compete with anything anymore
4 0
3 years ago
Read 2 more answers
One horsepower is a unit of power equal to 746 W. How much energy can a 150-horsepower engine transform in 10.0 s?
Lelu [443]

Answer:

E = 1119000\ joules

Explanation:

Given:

1\ Hp = 746\ watt

time (t = 10.0 sec)

power = 150 Hp

We need to find the energy transformed by a 150 Hp engine in 10 s.

Solution:

First we convert 150 Hp in watt.

1\ Hp = 746\ watt

150\ Hp = 150\times 746\ watt

150\ Hp = 111900\ watt

So, power (p = 111900 watt)

We know that, if we multiply power by time, we get energy transform by engine.

P = \frac{E}{t}

E = P\times t\ joule  -----------(1)

Where:

P ⇒ power.

E ⇒ Energy.

t ⇒ time.

Substitute p = 111900 watt and t = 10 s in equation 1.

E = 111900\times 10

E = 1119000\ joules

Therefore, a 150 Hp engine could transform 1,119,000 joules energy  in 10 s.

4 0
3 years ago
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