2 years ago

SYW A force of 175 N is needed to keep a stationary engine of weight 640 N on wooden skids from

Physics

2 answers:

Katen [24]2 years ago

8 0

Answer:

Explanation:

grigory [225]2 years ago

4 0

Answer:

phle follow karo yrr tab hee bat u ga

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Newton Metre

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A child is riding a bike at a speed of 6m/s with a total kinetic energy of 1224J. If the mass of the child is 30kg, what is the

UkoKoshka [18]

Answer:

Mass of bike = 38 kg.

Explanation:

Kinetic energy is given by the expression, $KE = \frac{1}{2} mv^2$ , where m is the mass and v is the velocity.

Here speed of child riding bike = 6 m/s

Mass of child = 30 kg

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Let the mass of bike be, m kg

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Substituting,

$1224 = \frac{1}{2}* (m+30)*6^2\\ \\ m+30=68\\ \\ m=38kg$

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2 years ago

Find the distance in nm between two slits that produces the first minimum for 410-nm violet light at an angle of 14.5°.

Galina-37 [17]

Answer:

820 nm

Explanation:

We are given that

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Substitute the values

$(0+\frac{1}{2})\times 410\times 10^{-9}=dsin 14.5$

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78% = nitrogen

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%1 = noble gases

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