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Furkat [3]
3 years ago
6

Pls subscribe my channel on yt

Physics
2 answers:
neonofarm [45]3 years ago
7 0

Answer:

Ok wait I'll subscribe now

Explanation:

make me brainlatest Thanks

g100num [7]3 years ago
3 0

Answer:

make hgoniabo brainliest coz i don't subs u :(

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A 60 kg box is lifted by a rope a distance of 10 meters straight up at constant speed. how much power is required to complete th
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Power=Work/Time
The work done is the energy required to lift the box, fighting the force of gravity. So, Work=Potential energy of the box at 10 meters.

W=PE=mgh=(60)(9.8)(10)=5880J
Finally,
P=W/T=(5880)/(5)=1176Watt

So the answer is 1176 Watts
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150 ml of water is heated with a burning marshmallow From 20 c to 93.5 C
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Which best describes the energy of a sound wave as it travels through a medium
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outward from a wall just above floor level. A 1.5 kg box sliding across a frictionless floor hits the end of the spring and comp
sweet [91]

Answer:

v = 0.489 m/s

Explanation:

It is given that,

Mass of a box, m = 1.5 kg

The compression in the spring, x = 6.5 cm = 0.065 m

Let the spring constant of the spring is 85 N/m

We need to find the velocity of the box (v) when it hit the spring. It is based on the conservation of energy. The kinetic energy of spring before collision is equal to the spring energy after compression i.e.

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v=\sqrt{\dfrac{kx^2}{m}} \\\\v=\sqrt{\dfrac{85\times (0.065)^2}{1.5}} \\\\v=0.489\ m/s

So, the speed of the box is 0.489 m/s.

3 0
4 years ago
A hazard sign has 3 identical
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Answer and Explanation: To know how much tape he will need, we have to calculate the perimeter of each parallelogram-shaped stripe.

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So, we need to determine width and length of the stripe.

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h=\sqrt{360}

h = 19 in

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P = (2*19) + (2*3)

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P_{t}= 44 + 44 + 44

P_{t}= 132 inches

To outline the parallelogram-shaped stripes, Charles need a total of 132 inches of tape. Since one roll has 144 inches, he will have enough tape to finish the job.

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