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4 years ago

In the equation y = mx +b , what does the m represent? *

Physics

1 answer:

andrew-mc [135]4 years ago

5 0

Answer:

Slope - m

Y int - b

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How is pressure related to the sharpness of a knife and its ability to cut?

Gnesinka [82]

Pressure has inverse relationship with area of an object. The smaller the area is, more pressure it exerts. Increasing the sharpness of knife(decreasing its area), increases the pressure on an object i.e ability to cut increases on increasing the sharpness.
Hope this helps.

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4 years ago

What is the net work on the block?

Strike441 [17]

Answer:

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3 years ago

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

$w = \frac{v }{r }$

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

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

Constructive interference leads to _________.

Minchanka [31]

D
the waves are in phase. crests come together to form bigger crests hence higher amplitude

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3 years ago

Ruff, the 50 cm tall Labrador Retriever stands 3 m from a plane mirror and looks at his image. What is Ruff’s image position and

sertanlavr [38]

Since the mirror is plane, the image will be formed behind the mirror. The distance will be the same as that of the distance of the object from the mirror and the height will just be the same.
So, Ruff's image will be 3 m behind the mirror and 50 cm tall.

8 0

3 years ago