Thermal energy is added to a sample, its particles move ?

Answers

Answer 1

Answer: Yes, if the temperature increases, than that means the particles are moving faster. Temperature is the measure of movement of particles in an object or substance.

By thermal energy, you mean adding heat correct....? I'm not very good at this sort of thing, but I gave you what I have..

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The largest diversity of plants and animals on the planet is found in one terrestrial biome. True or false

Answers

The largest diversity of plants and animals on the planet is found in one terrestrial biome. It is a true statement.

What is terrestrial biome?

Large-scale habitats known as biomes can be identified by their distinctive temperature ranges and precipitation rates. The kinds of vegetation and animal life that can exist in those locations are influenced by these two factors. The same biome can exist in physically separate regions with similar climates because each biome is characterized by climate.

There are eight main terrestrial biomes: temperate grasslands, temperate forests, boreal forests, Arctic tundra, and tropical rainforests, savannas, subtropical deserts, and chaparral.

All this terrestrial biomes has large diversity of plants and animals on the planet .

Learn more about terrestrial biome here:

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That statement is true.

The largest diversity of plants and animals on the planet is found in the tropical rain forest.

Match the letters to the numbers for 30 points!1.Ca
2.H2O
3. nuclear decay
4. nuclear synthesis
5. η
6. positive charge
7. e
8. number of protons in nucleus

A.element
B.proton
C. fusion
D. compound
E.fission
F.atomic number
G. neutron
H.electron

Answers

-- 'Ca' (Calcium) is an element.
-- The proton has a positive charge.
-- Nuclear fusion results in the synthesis of atoms of new elements.
-- H₂O (water) is a chemical compound.
-- Nuclear fission is a decay of the nucleus.
-- The atomic number of an element is the number of protons
in each atom of it.
-- I suppose you're using the Greek letter η ('eta', not 'nu')
to represent the neutron.
-- I suppose you're using ' e ' to represent the electron.

1-a
2-d
3-e
4-c
5-g
6-b
7-h
8-f

A drive find difficulty to drive a car when the ground is cover with ice explain why?

Answers

the ground is less rough, so there is less friction between the ground and the wheels of the car. This makes it unable for the car to move forward

Can Someone Help ? !5 Points!!!If the weight of displaced water is greater than the weight of an object, then the object will:

A. float
B. sink
C. sink, then float

An object will float when:

A. buoyant force is equal to the weight of the object
B. buoyant force is less than the weight of the object
C. density is equal to the weight of the object
D. density is greater than the weight of the object

What is the buoyancy force on a 15 g object which displaces 60 mL of water? (Remember to change mL of water to grams and grams to kg)

A. 900 N
B. 25 N
C. 0.59 N
D. 0.25 N

An object has a density of 20 g/cm3. When placed in a cylinder, it displaces 5 mL of water. What is the mass of the object?

A. 0.25 g
B. 4.0 g
C. 100.0 g

Substance has a mass of 16.2 grams. It displaces 8.1 grams of water. What is its specific gravity?

A. 2.0
B. 5.5
D. 131.22

Answers

1) A. float

There are two forces acting on an object in the water: the weight of the object (downward) and the buoyancy (upward), which is equal to the weight of displaced water. If the weight of displaced water is greater than the weight of the object, it means that there is a net force directed upward, so the object will float.

2) A. buoyant force is equal to the weight of the object

As stated in the previous question, there are only these two forces acting on an object in the water (buoyant force and weight of the object), so if the two forces are equal, then the object is in equilibrium, so it will float.

3) C. 0.59 N

The buoyancy force is given by:

$B=\rho_L V_d g$

where

$\rho_L = 1000 kg/m^3$ is the density of the liquid (water)

$V_d=60 mL=6 \cdot 10^(-2) L=6 \cdot 10^(-5) m^3$ is the volume of displaced water

$g=9.8 m/s^2$ is the acceleration of gravity

Substituting numbers into the formula, we find

$B=(1000 kg/m^3)(6 \cdot 10^(-5) m^3)(9.8 m/s^2)=0.59 N$

4) C. 100.0 g

The density of the object is 20 g/cm^3, which is greater than the density of the water (1 g/cm^3): this means that the object will sink, so its volume is equal to the volume of displaced water.

Therefore, we have:

- object's density: $\rho=20 g/cm^3$

- object's volume: $V=5 mL=5 cm^3$

so, the mass of the object is

$m=dV=(20 g/cm^3)(5 cm^3)=100.0 g$

5) A. 2.0 g

The specific gravity of an object is given by the ratio between its density ( $\rho$ ) and the density of a reference substance ( $\rho_W$ ), in this case water:

$SG=(\rho)/(\rho_W)$

whe can rewrite each density as the ratio between mass and volume:

$SG=(m_o /V_o)/(m_w/V_w)$

where the suffix o refers to the object, while the suffix w refers to the water. However, if we assume that the object is completely in the water, the two volumes are equal, so we can simplify the formula:

$SG=(m_o)/(m_w)=(16.2 g)/(8.1 g)=2.0$

What do multimillion-dollar sponsorships of famous athletes symbolize? a)globalization b)leadership
c)commercialization
d)sportsmanship

Answers

These sponsorships are somehow related to globalisation, as they are a global phenomenon, but some of them are on a very local scale, so globalisation is not a necessary part in them.

The best answer is c) commercialisation - atheletic competitions are turned into sources of profit, and athletes compete with the thought of winning money through it and the companies hope to increase their revenue by advertising during the sports events

Answer:

The answer for Plato is C.

At which point on this electric field will a test charge show the maximum strength?A
B
C
D

Answers

Answer:

Explanation:

The figure shows the electric field produced by a spherical charge distribution - this is a radial field, whose strength decreases as the inverse of the square of the distance from the centre of the charge:

$E\propto (1)/(r^2)$

More precisely, the strength of the field at a distance r from the centre of the sphere is

$E=k(Q)/(r^2)$

where k is the Coulomb's constant and Q is the charge on the sphere.

From the equation, we see that the field strength decreases as we move away from the sphere: therefore, the strength is maximum for the point closest to the sphere, which is point A.

This can also be seen from the density of field lines: in fact, the closer the field lines, the stronger the field. Point A is the point where the lines have highest density, therefore it is also the point where the field is strongest.

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