3 years ago

What is kelvin scale?

2 answers:

4 0

<span>a scale of temperature with absolute zero as zero, and the triple point of water as exactly 273.16 degrees.</span>

Alborosie3 years ago

4 0

It's a scale of temperature with absolute zero as zero, and the triple point of water as exactly 273.16 degrees

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A 22.0 kg child slides down a slide that makes a 37.0° angle with the horizontal. (a) What is the magnitude of the normal force

patriot [66]

Answer:

(a) 172.185 N

(b) $53^{\circ}$

Solution:

As per the question:

Mass of the child, m = 22.0 kg

Angle, $\theta = 37.0^{\circ}$

Now,

(a) The magnitude of the normal force exerted by the slide on the child:

$F_{N} = mgcos\theta$

$F_{N} = 22\times 9.8cos37^{\circ} = 172.185\ N$

Now,

(b) The angle from the horizontal at which the force is directed is:

$90^{\circ} - 37^{\circ} = 53^{\circ}$

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a_sh-v [17]

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Nataly_w [17]

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3 years ago

What will be the acceleration of a 40-kilogram object that is pushed with a net force of 80 newtons?

ratelena [41]

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