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Naddik [55]
3 years ago
12

A roller coaster is stopped on a track. When the engineer presses a launch button on the coaster, the coaster moves forward. Exp

lain this change in terms of balanced and unbalanced forces.
Physics
1 answer:
3241004551 [841]3 years ago
5 0
A roller coaster is stopped on a track. When the engineer presses a launch button on the coaster, the coaster moves forward. Explain this change in terms of balanced and unbalanced forces.
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A paper pinwheel is spinning in the wind. Which statement is correct about the forces responsible for the rotation?​
laiz [17]

A paper pinwheel is spinning in the wind.

Which statement is correct about the forces responsible for the rotation?

The components of gravity and the force of wind that point through the pivot are responsible for the rotation.

Only the perpendicular component of wind is responsible for the rotation, because gravity points downward.

Only the perpendicular component of gravity is responsible for the rotation, because wind points toward the pivot.

The perpendicular components of gravity and the force of wind are responsible for the rotation.

Answer:

Only the perpendicular component of gravity is responsible for the rotation because wind points toward the pivot.

Explanation:

A pinwheel is a plaything that is made up of paper that is designed to spin when the wind comes in contact with it. The paper is held fast to its axle by a pin which enables it to spin.

Therefore, if the pinwheel is spun anti-clockwise, it brings electrical energy, converting the wind energy and <u>only the perpendicular component of gravity is responsible for the rotation because wind points toward the pivot. </u>

6 0
3 years ago
If a star has a parallax of 0.050 arc second, what is its distance in pc? In ly? In AU? Seeds, Michael A.. Universe: Solar Syste
vaieri [72.5K]

Answer:

Distance in pc= 20parsecs

Distance in zLY= 65.2LY

Distance in AU= 4.1×10^6AU

Explanation:

Using the formular:

d = 1/p

Where d = distance

P= parallax angle in arc of second

d= 1/0.050

d= 20 parsed

Converting to Lighy years,LY :

1 PC = 3.26LY

d= 20pc × (3.26Ly/1pc)

d= 65.2Ly

To convert to AU, 206,265 AU = 1pc

d= 20pc × (2.06×10^5AU/1pc)

d= 4.1×10^6AU

5 0
4 years ago
Read 2 more answers
Explain the difference in how particles are arranged in a solid,liquids and gases
3241004551 [841]

Answer:

hope this helps

Explanation:

solid particles are arranged according to the size of the object

while liquid particles are arranged how they move freely together in the object they are in.

while gas particles are arranged scatterly like they spread.

3 0
3 years ago
Read 2 more answers
Imagine a landing craft approaching the surface of Callisto, one of Jupiter's moons. If the engine provides an upward force (thr
nordsb [41]

Answer:

W=3456 N

Explanation:

Force 1 F_1=3456

Force 2 F_2=2333N

Acceleration at stage 2 a_2=0.39

Generally the weight of the Craft W is given as

W= upward force(thrust)

Therefore

W=3456 N

5 0
3 years ago
*example of previous incorrect/correct answer on similar question) Inside a vacuum tube, an electron is in the presence of a uni
andrezito [222]

The final speed of the electron is 4.64 * 10^5 m/s.

<h3>What is the speed of the electron?</h3>

Given that the mass of the electron is obtained as 9.11 * 10^-31 Kg, we have that the charge of the electron is 1.6 * 10^-19 C.

E= F/q

F = Eq

F =  330 N/C * 1.6 * 10^-19 C

F = 5.28 * 10^-17 N

F = ma

a = F/m = 5.28 * 10^-17 N/ 9.11 * 10^-31 Kg

a = 5.8 * 10^13 m/s^2

Using

v = u + at

u = 0 m/s because the electron was initially at rest

v = at

v = 5.8 * 10^13 * 8.00 ✕ 10−⁹ s

v = 4.64 * 10^5 m/s

Learn more about the speed of the electron:brainly.com/question/13130380

#SPJ1

8 0
2 years ago
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