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Alona [7]
4 years ago
11

Which statement about the atomic nucleus is correct? a. The nucleus is made of protons and neutrons and has a negative charge. b

. The nucleus is made of protons and neutrons and has a positive charge. c. The nucleus is made of electrons and has a positive charge. d. The nucleus is made of electrons and has a negative charge.
Physics
1 answer:
Anon25 [30]4 years ago
5 0
"b. The nucleus is made of protons and neutrons and has a positive charge" is the only option that is true about the atomic nucleus. The protons give it a positive charge.
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The gravitational field strength at a distance R from the center of moon is gR. The satellite is moved to a new circular orbit t
3241004551 [841]

Answer:

g'=\frac{g__R}{4}

Explanation:

Given:

  • gravitational field strength of moon at a distance R from its center, g__R
  • Distance of the satellite from the center of the moon, h=2R

<u>Now as we know that the value of gravity of any heavenly body is at height h is given as:</u>

g'=g__{R}} \times \frac{R^2}{(2R)^2}

g'=\frac{g__R}{4}

∴The gravitational field strength will become one-fourth of what it is at the surface of the moon.

6 0
3 years ago
Part A
Makovka662 [10]

Answer:

(A). The magnitude of the momentum of the marble is 0.004745 kg m/s.

(B). The speed of baseball is 23.0 m/s

Explanation:

Given that,

Mass of marble = 0.0073 kg

Speed = 0.65 m/s

(A). We need to calculate the magnitude of the momentum of the marble

Using formula of momentum

p = mv

Where, m = mass

v = velocity

Put the value into the formula

p=0.0073\times0.65

p=0.004745\ kg m/s

(B). Mass of baseball = 0.136 kg

Momentum of baseball = 3.14 kg m/s

We need to calculate the speed of baseball

Using formula of momentum

p=mv

v=\dfrac{p}{m}

Put the value into the formula

v=\dfrac{3.14}{0.136}

v=23.0\ m/s

Hence, (A). The magnitude of the momentum of the marble is 0.004745 kg m/s.

(B). The speed of baseball is 23.0 m/s

7 0
3 years ago
If you had a known sample of a mineral whose density was 7.1 grams/ml and its volume was 15 ml. What is the mass of the mineral.
kow [346]

Answer:

<h3>The answer is 106.5 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

volume = 15 mL

density = 7.1 g/mL

We have

mass = 7.1 × 15

We have the final answer as

<h3>106.5 g</h3>

Hope this helps you

6 0
3 years ago
What are the units of mass and weight
DENIUS [597]

Answer:Because mass and weight are separate quantities, they have different units of measure. In the International System of Units (SI), the kilogram is the basic unit of mass, and the newton is the basic unit of force. The non-SI kilogram-force is also a unit of force typically used in the measure of weight.

5 0
3 years ago
Read 2 more answers
Explain how if a solid, liquid, and gas are put into individual containers how they fill the container.
Sav [38]

Answer:

serial in which container is filled

Solid -base of container

Liquid- above solid

Gas- above liquid

Explanation:

If any mixture of  matter in different state (that solid , liquid or gas )are kept in any container, then substance with higher density will be settled at lowest surface first and similarly the substance with lowest density will be at upper part of container.

In the given container we have to keep solid, liquid and gas

  • sold has the highest density,
  • gas the lowest density and
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based on this

solid will be at surface of container

above sold will be liquid

above liquid will be presence of Gas

serial in which container is filled

Solid -base of container

Liquid- above solid

Gas- above liquid

8 0
4 years ago
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