The answer is electron

Explanation: An atom consists of a small but massive nucleus that include protons (positive charge) and neutrons (neutral charge). around the nucleus is a cloud of rapidly moving electrons (negative charge)

3 0

2 years ago

How many World Cups have the U.S. Women's National Soccer Team won?

Alenkasestr [34]

Answer: 4

Explanation: I watched them win their 3rd and 4th

5 0

2 years ago

A point charge of 6.0 nC is placed at the center of a hollow spherical conductor (inner radius = 1.0 cm, outer radius = 2.0 cm)

egoroff_w [7]

Explanation:

The given data is as follows.

q = 6.0 nC = $6 \times 10^{-9} C$

inner radius (r) = 1.0 cm = 0.01 m (as 1 cm = 100 m)

So, there will be same charge on the inner surface as the charge enclosed with an opposite sign.

Formula to calculate the charge density is as follows.

$\sigma = \frac{q_{in}}{A}$ .......... (1)

Since, area of the sphere is as follows.

A = $4 \pi r^{2}$ ........... (2)

Hence, substituting equation (2) in equation (1) as follows.

$\sigma = \frac{q_{in}}{4 \pi r^{2}}$

= $\frac{6 \times 10^{-9} C}{4 \times 3.14 \times (0.01)^{2}}$

= $0.477 \times 10^{-5}$

or, = 4.77 $\mu C/m^{2}$

Thus, we can conclude that the resulting charge density on the inner surface of the conducting sphere is 4.77 $\mu C/m^{2}$ .

5 0

2 years ago

How many (whole number of) 91 kg people

Tcecarenko [31]

We are given that the maximum mass capacity is 1 metric ton or 1000 kg. Therefore the amount of people this can hold is simply the ratio of the maximum mass capacity over the mass of the person, that is:

people = 1000 kg / 91 kg

people = 10.98

So the elevator can safely occupy 10 people. We will not exceed to 11.

6 0

2 years ago

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