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Furkat [3]
3 years ago
7

A roller coaster car of mass m= 300 kg is released from rest at the top of a 60 m high hill (position A), and rolls with a negli

gible friction down the hill, through a circular loop of radius 20 m (Positions B,C,and D) and along a horizontal track (to position E). Describe the scientific principles involved in this scenario.
Physics
1 answer:
Andrews [41]3 years ago
4 0

Answer: The principle of conservation of energy, angular speed and centripetal force

Explanation:

At point A, the car experienced maximum of potential energy

As it moves down the hill, the potential energy decreases while the kinetic energy increases.

The maximum kinetic energy of the car is needed for the attainment of enough centripetal force to help the car move through the loop without falling .

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Answer:

15.C Mucus reduces friction

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3 years ago
Is god real??? i wanna know
NemiM [27]
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6 0
3 years ago
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Three identical particles, q1, q2, and q3, each with charge q = 5.00 μC, are placed along a circle of radius r = 2.00 m at angle
wariber [46]

Answer:

11250 N/C

Direction: 0 deg counterclockwise from positive x-axis

Explanation:

q = magnitude of charge on each particle = 5 μC =  5 x 10⁻⁶ C

r = distance of each particle from center of circle = 2 m

E = Magnitude of electric field at the center by each particle

Magnitude of electric field at the center by each particle is given as

E = \frac{kq}{r^{2} }

inserting the values

E = \frac{(9\times10^{9} )(5\times10^{-6})}{2^{2} }\\E = 11.25\times10^{3} NC^{-1}

From the diagram , we see that being equal and opposite, the electric fields due to charge q₁ and q₃ cancel out.

So net electric field at center is only due to charge q₂ direction towards positive x-direction

So

E_{res} = Resultant electric field = 11250 N/C

Direction: 0 deg counterclockwise from positive x-axis

7 0
3 years ago
The amplitude of the electric field of an electromagnetic wave traveling in a vacuum is measured to be 3.5 x 10^2 v/m. What is t
Oksana_A [137]

Answer:B=1.166 \times 10^{-6} T

Explanation:

Given

Amplitude of Electric field is 3.5\times 10^2

We know the relation between Electric field and Magnetic field is

E=cB

Where

E=Electric Field

c=speed of light

B=Magnetic field

B=\frac{E}{c}

B=\frac{3.5\times 10^2}{3\times 10^8}

B=1.166 \times 10^{-6} T

8 0
3 years ago
States that Earth processes today are similar to those that took place in the past
Maslowich

Answer;

Uniformitarianism

Explanation;

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James Hutton suggested that deep soil profiles were formed by the weathering of bedrock over thousands of years. He also suggested that supernatural theories were not needed to explain the geologic history of the Earth.

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4 years ago
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