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3 years ago

A(n) ___ object is not electrically neutral.

Physics

1 answer:

Korvikt [17]3 years ago

8 0

Answer:

No, there are always protons, neutrons, and electrons. When an object is neutral, it means the positive and negative charges sum to zero (are equal and opposite). NO, if an object has no net charge it simply means that the amount of positive and negative charges (protons and neutrons) are the same.

Explanation:

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Imagine that a relativistic train travels past your lecture room at a speed of 0.894 c. The passengers of the train claim that w

Lady bird [3.3K]

Answer:

The length of the train in the frame of the lecture room is 40.59 m.

Explanation:

Given that,

Speed = 0.894 c

Original length = 90.6 m

We need to calculate the length of the train in the frame of the lecture room

Using formula of length contraction

$L=L_{0}\sqrt{1-(\dfrac{v}{c})^2}$

Where, $L_{0}$ =original length

v = speed of train

Put the value into the formula

$L=90.6\sqrt{1-(\dfrac{0.894c}{c})^2}$

$L=90.6\sqrt{1-0.894^2}$

$L=40.59\ m$

Hence, The length of the train in the frame of the lecture room is 40.59 m.

8 0

4 years ago

Without the wheels, a bicycle frame has a mass of 8.29 kg. Each of the wheels can be roughly modeled as a uniform solid disk wit

trapecia [35]

Answer:

69.66 Joule

Explanation:

mass of bicycle frame, mf = 8.29 kg

mass of wheel, mw = 0.820 kg

radius, r = 0.343 m

velocity, v = 3.6 m/s

There are two wheels in the bicycle.

There are two types of kinetic energy of the system one is kinetic energy of rotation and another is rotational kinetic energy.

$K = \frac{1}{2}m_{f}v^{2}+ 2\times \frac{1}{2}m_{w}v^{2}+ 2\times \frac{1}{2}I_{w}\omega^{2}$

$K = \frac{1}{2}m_{f}v^{2}+m_{w}v^{2}+ \frac{1}{2}\times m_{w}v^{2}$

$K = \frac{1}{2}m_{f}v^{2}+ \frac{3}{2}\times m_{w}v^{2}$

$K = \frac{1}{2}\times 8.29\times 3.6^{2}+ \frac{3}{2}\times 0.820\times 3.6^{2}$

K = 69.66 J

3 0

4 years ago

The acquisition of electric charge without contact between charged and/or uncharged substances.

Lera25 [3.4K]

Answer:

induction

Explanation:

I just did usatestprep

4 0

3 years ago

Read 2 more answers

What mission is underway to observe pluto?

liubo4ka [24]

The answer is; NASA's New Horizons spacecraft

It was launched in 2006 from Cape Canaveral and engineered by the Johns Hopkins University. The spacecraft has flown past Pluto, collected data and is now exploring the Kuiper belt object. The mission involved mapping of the planet's surface and check for atmosphere.

5 0

3 years ago

What property of equality can be used to solve the equation. n – 14 = 25

Inga [223]

Do 25-14 and you will get your answer

7 0

3 years ago