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3 years ago

Why would you be surprised if hockey puck started moving without being hit? Why would you be surprised if a fast moving

Physics

1 answer:

kolbaska11 [484]3 years ago

3 0

Answer:

id be scared because this thing is moving by its self at an alarming rate

Explanation:

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The magnetic field strength at the north pole of a 2.0-cm-diameter, 8-cm-long Alnico magnet is 0.10 T. To produce the same field

frosja888 [35]

Answer:

N = 3032 turns

Explanation:

The magnetic field produced by a solenoid is described by

B = μ₀ n I

Where is the permittivity in a vacuum with a value of 4π 10⁻⁷ N /A², n is the turn density and I the current

Let's apply this equation to the problem, the turn density is the number of turns per unit length, in this case it is the same magnet length

L = 8 cm = 0.08 m

Let's calculate

B = μ₀ N/L I

N = B L / μ₀ I

N = 0.10 0.08 / (4π 10⁻⁷ 2.1)

N = 3,032 103 turns

4 0

3 years ago

Imagine a truck crashes into a building. What kind of sound wave does this make?

Artist 52 [7]

Thr wave of sound that makes the truck is vibration

6 0

3 years ago

Alan starts from his home and walks 1.3 km east to the library. He walks an additional 0.68 km east to a music store. From there

zepelin [54]

Answer: final Displacement = 0 km, total distance covered =7 km

Explanation:

Given the following :

From home to library = 1.3 km East

Library to music store = 0.68km East

Music store to friend's house = 1.1km North

Friend's house to grocery store = 0.42 km North

Displacement is the net change in distance traveled.

Eastward distance :

To = (1.3 + 0.68)km = 1.98km East

Fro = (0.68 + 1.3)km = 1.98 km East

Δ distance = (1.98 - 1.98) = 0

Northward direction:

To = (1.1 + 0.42)km = 1.52km north

Fro = (0.42 + 1.1)km = 1.52km North

Δ distance = (1.98 - 1.98) = 0

Hence final Displacement = 0

Total distance covered = 2 × (1.3 + 0.68 + 1.1 + 0.42) = 2 × 3.5

= 7km

3 0

3 years ago

When Casey looks at a CD or DVD she notices that there is a rainbow pattern that is created by the light. She became curious and

ipn [44]

Answer:

Explanation:

diffraction

6 0

3 years ago

Read 2 more answers

If Star A and Star B have the same absolute magnitude, but Star A is brighter, what does that tell us?

Hatshy [7]

We can conclude that star A is closer to us than star B.

In fact, the absolute magnitude gives a measure of the brightness of the star, if all the stars are placed at the same distance from Earth. So, it's a measure of the absolute luminosity of the star, indipendently from its distance from us: since the two stars have same absolute magnitude, it means that if they were at same distance from Earth, they would appear with same luminosity. Instead, we see star A brighter than star B, and the only explanation is that star A is closer to Earth than star B (the closer the star A, the brigther it is)

6 0

3 years ago