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Zina [86]
3 years ago
7

Question 1(Multiple Choice Worth 2 points)

Physics
1 answer:
tia_tia [17]3 years ago
3 0

Answer:

D

Explanation:

the reason for each column is to show the electronic configuration of the elements in that column.

Hope This Helps  ▼・ᴥ・▼

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Many of the headstones in graveyards are made of granite. What are these granite headstones turning into?
8_murik_8 [283]

The given question is incomplete as the options are missing. The options of this question are as follows-

a) limestone deposits in the soil beneath them, and ions that wash away

b) magnesium-bearing basalt in the soil beneath them, and ions that wash away

c) clays, rust, and sand that go into making soil beneath them, and ions that wash away

d) soluble ions that primarily go into making soil beneath them

e) diet pepsi.

Answer:

Option (C)

Explanation:

Granite is an intrusive igneous rock that is comprised of minerals such as quartz, feldspar and some amount of amphibole as well as mica. It is a very hard and resistant rocks, and so are commonly used for many purposes such as building stones, headstones and tombstones.

According to the given condition, these rocks constantly interacts with the wind, water, and other factors, as a result of which the rock weathers and creates sediments such as clays, sand and rust particles which are mostly deposited beneath the headstones and some are even washed away by the agents such as wind and water.

Thus, the correct answer is option (C).

8 0
3 years ago
What force is required to accelerate a 1,000 kg car 5 m/s2?
marysya [2.9K]
F = ma
F = (1000 kg)•(5 m/s^2)
F = 5000 N
5 0
3 years ago
After a trip to Mars, the human heart would be much stronger than it was on Earth
Mariulka [41]
My answer to this question honestly is no
7 0
3 years ago
2. A 200.0-kg bear grasping a vertical tree slides down at constant velocity. What is the friction force between the tree and th
Neporo4naja [7]

Answer: 1960 N

Explanation:

The bear is sliding down at constant velocity: this means that its acceleration is zero, so the net force is also zero, according to Newton's second law:

F_{net}=ma=0

There are two forces acting on the bear: its weight W, pulling downward, and the frictional force Ff, pulling upward. Therefore, the net force is given by the difference between the two forces:

F_{net}=W-F_f=0

From the previous equation, we find that the frictional force is equal to the weight of the bear:

F_f=W=mg=(200.0 kg)(9.8 m/s^2)=1960 N


8 0
3 years ago
Many chemical reactions release energy. Suppose that at the beginning of a reaction, an electron and proton are separated by 0.1
ludmilkaskok [199]

Answer:

1.189eV

Explanation:

The electric potential energy is the potential energy that results from the Coulomb force and is associated with the configuration of two or more charges. For an electron in the presence of an electric field produced by a proton, the electric potential energy is defined as:

U=\frac{kq_{e}q_{p}}{r}

where  q_{e} is the electron charge, q_{p} is the proton charge, r is the separation distance between the charges and k is the coulomb constant.

Knowing this, we can calculate how much electric potential energy was lost:

\Delta U=U_{f}-U{i}\\\Delta U=\frac{kq_{e}q_{p}}{r_{f}}-\frac{kq_{e}q_{p}}{r_{i}}\\\Delta U=kq_{e}q_{p}(\frac{1}{r_{f}}-\frac{1}{r_{i}})\\\Delta U=(8.99*10^9\frac{Nm^2}{C^2})(-1.60*10^{-19}C)(1.60*10^{-19}C)(\frac{1}{0.105*10^{-9}m}-\frac{1}{0.115*10^{-9}m})\\\Delta U=1.90*10^{-19}J*\frac{6.2415*10^{18}eV}{1J}=1.189eV

5 0
4 years ago
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