3 years ago

Which of the following describes plastic? HELP

Physics

1 answer:

Bingel [31]3 years ago

4 0

Answer:

Explanation:

A material that has a high resistivity and prevents charges from moving freely... it is part of insulators...

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Sam moves an 800 N wheelbarrow 5 meters in 15 seconds. How much work did he do?

alexandr402 [8]

Answer:

work done= force × displacement

=800×5

=4000J

Explanation:

The amount of work done is the result of the magnitude of force applied and the displacement of the body due to the force applied. Therefore, work done is defined as the product of the applied force and the displacement of the body.

7 0

2 years ago

a 2.1x10^3 kg car starts from rest at the top of the driveway that is sloped at an angle of 20 degree with the horizontal. an av

liberstina [14]

Hopefully this will help you.

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3 years ago

A jet airplane is in level flight. The mass of the airplane is m=8950 kg. The airplane travels at a constant speed around a circ

Mice21 [21]

Answer:

The net force is 91780.8 N.

Explanation:

mass, m = 8950 kg

Radius, R = 9.33 miles = 15015.2 m

Time, T = 0.123 h = 442.8 s

There are two forces acting on the plane.

Horizontal force is the centripetal force and the vertical force is the weight.

$Fx =m R w^2\\\\Fx = m R \frac{4\pi^2}{T^2}\\\\Fx = 8950\times 15015.2\times \frac{4\times 3.14\times 3.14}{442.8\times 442.8}\\\\Fx = 27030.8 N \\\\Fy = m g \\\\ Fy = 8950\times 9.8 \\\\Fy = 87710 N$

The net force is

$F = \sqrt{Fx^2 + Fy^2}\\\\F = \sqrt {27030.8^2 + 87710^2}\\\\F = 91780.8 N$

7 0

3 years ago

A 600kg car is at rest , and then accelerates to 5n/s what is the original kinetic energy?

lubasha [3.4K]

M = 600 kg
u = 0 (as the car was at rest initially)
v = 5 m/s
Initial kinetic energy = ½mu²
= ½×600×0
= 0
Final kinetic energy = ½mv²
= ½×600×25
= 7500 J

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3 years ago

Answer all of these questions and you will get the brainlist

loris [4]

Answer:

a is potential and b is kinetic

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3 years ago