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Sergeu [11.5K]
3 years ago
8

A neutron has

Physics
2 answers:
zavuch27 [327]3 years ago
6 0

Answer:

D

Explanation:

a neutron does not have a positive nor negative charge it remains neutral

Bad White [126]3 years ago
6 0
A neutron had neither a positive or negative charge so the answer is D
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A steel railroad track has a length of 23 m when the temperature is 7◦C. What is the increase in the length of the rail on a hot
xxTIMURxx [149]

Answer:

5.82 mm

Explanation:

length of the track, L = 23 m

Initial temperature, T = 7 °C

final temperature, T' = 30 °C

Coefficient of linear expansion, α = 11 x 10^-6 / °C

Let the increase in length of the track on the hot day is ΔL.

use the formula of the linear expansion

ΔL = L x α x ΔT

ΔL = L x α x (T' - T)

ΔL = 23 x 11 x 10^-6 x (30 - 7)

ΔL = 5.82 x 10^-3 m

ΔL = 5.82 mm

Thus, the increase in the length of the track is 5.82 mm.

7 0
3 years ago
How much time passes when an object travels at a constant speed of 17 m/s over a distance of 323 m? Identify Variables, write fo
k0ka [10]

Answer: 19 s

Explanation:

The relationship between speed, distance  and time is given by:

velocity= distance/time

time= distance/velocity= 323 m/17 m/s= 19 s

8 0
4 years ago
Review for qtr 3 exam
Naddik [55]

Answer:

Uhm where are the questions and answers?

3 0
2 years ago
While performing an experiment, the student creating the data table is not sure if a measurement from the experiment is a vector
marin [14]

Before coming into conclusion first we have to understand both scalar and vector .

A scalar quantity is a physical quantity which has only magnitude for it's complete specification.

A vector quantity is that physical quantity which not only requires magnitude but also possesses direction for it's complete specification.

So the most important factor that differentiate vector from scalar is the direction.

As per the question the student is doing an experiment where he is recording the data obtained during the process.

In order to arrange them in data table, he should ask about the direction of the quantity under consideration.


Hence the correct option is the third option(C)i.e does the measurement include direction?




7 0
3 years ago
Read 2 more answers
A 150 g air-track glider is attached to a spring. The glider is pushed in 8.80 cm and released. A student with a stopwatch finds
Alla [95]

Answer:

2.06 N/m

Explanation:

The system makes 10.0 complete oscillations in 17.0 s. So, the frequency of the system is

f=\frac{10.0}{17.0 s}=0.59 Hz

The angular frequency of the system is given by

\omega = 2\pi f=2\pi (0.59 Hz)=3.71 rad/s

In a simple harmonic motion, the angular frequency is related to the mass and the spring constant by

\omega=\sqrt{\frac{k}{m}}

where

k is the spring constant

m is the mass

Here we know

\omega=3.71 rad/s\\m = 150 g = 0.150 kg

So we can solve the formula to find k:

k=\omega^2 m = (3.71 rad/s)^2 (0.150 kg)=2.06 N/m

5 0
4 years ago
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