Which force is represented by the arrow at A?

A) Force of Friction
B) Force of gravity
C) Normal Force
D) Tension Force



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Answer:

176 degrees fahrenheit

Explanation:

80°C × 9/5) + 32 = 176°F

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80 °C

80 °C as Fahrenheit

[tex]f = (c \times \frac{9}{5} ) + 32[/tex]

[tex]f = (80 \times \frac{9}{5} ) + 32[/tex]

[tex]f = 176 \: fahrenheit[/tex]

hence, 80°C converted to Fahrenheit is 176°F

Answer: t=10s

Explanation:

v=u+at

⟹0=30+(−3)×t

⟹0=30−3t

⟹3t=30

⟹t=303

⟹t=10s.

Answer:

wrong question

Explanation:

unit of acceleration is written in m/s which is wrong

The final velocity of the car which is moving with the initial velocity of 30km/h is 15.53m/s.

Acceleration of an object is the rate of change in the velocity of an object. It depends upon the initial and final velocity of an object. It is a vector quantity because it has both magnitude and direction. The SI unit of acceleration is meter per second square.

a = (v-u)/ t

v = u + at

u = 30 × 1000/ 3600 = 8.33m/s

a = 2.0m/s²

t = 3.6 seconds

v = u + at

v = 8.33 + 2.0 × 3.6

v = 8.33 + 7.2

v = 15.53m/s

Therefore, the final velocity of the car is 15.53m/s.

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The wording of the problem leaves much to be desired. It does not indicate in which direction is the object’s acceleration. It also fails to mention the presence or absence of friction. In order to cover all conditions, the answer must be a range of values, with the direction changing from zero to ninety degrees.

The range would be: 20 N to 120 N (100 + 20 = 120) starting from zero all the way up to ninety degrees.

Answer:

2 moles

Explanation:

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The mass of one mole of iron sulphide is 88 g. Then the number of moles in 44 g is 0.5 moles.

One mole of a substance is its amount which contains 6.022 × 10²³ atoms. This number is called Avogadro number. One mole of every element contains Avogadro number of atoms.

Similarly one mole of every compound contains Avogadro number of molecules. The mass of one mole of a compound is called its molar mass.

Atomic mass of  Fe = 56 g/mol

atomic mass o S = 32 g/mol

molar  mass of FeS = 56 + 32 = 88 g/mol

Mass of one mole of iron sulphide (FeS) is 88 g. Hence number of moles in 44 g is :

no.of moles = given weight/molar mass

                    = 44 g /88 g/mol = 0.5 mol

Therefore, the number of moles of FeS in 44 g is 0.5.

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Answer:

Ionic Compound

Explanation:

To identify the type of chemical bond in a molecule, look at the atoms that make up the compound. If there are two nonmetals, it is a covalent bond. If the two atoms are metals, it is a metallic bond. If one atom is a metal and the other is a nonmetal, it is an ionic bond. Ionic compounds are also known as salts. You can identify KBr as an ionic compound because potassium is a metal and a salt.

Hope this helps

Ionic Compound

KBr ( Pottasium Bromide ) .

Ionic compounds are also known as salts.

The rubbing of certain materials against one another can transfer negative charges, or electrons. For example, if you rub your shoe on the carpet, your body collects extra electrons.

1.6x15=24

0.4x4.5=1.8

24+1.8=25.8

1.6+0.4=2

25.8/2=12.9

Answer:

1.6x15=24

=0.4x4.5=1.8

=24+1.8=25.8

=1.6+0.4=2

=25.8/2=12.9

Answer:

C

Explanation:

The base of the lightbulb should touch the positive end and also the negative end of the battery.

Answer:

Northern Hemisphere

Explanation:

The latitude of Bhutan is 27.5142° N, placing the country in the northern hemisphere above the equator

Answer: static stretching

Explanation:

e.g rubberband

Answer:

static stretching

Explanation:

Answer:

Gravity

Explanation:

Gravity is what causes stars to form. During accretion, gravity pulls matter into a core, which can be a star, planet or black hole.

Answer:

Cerebellum .

Explanation:

The Cerebellum is the part of the brain that controls your walking and balance. If you need any more help feel free to reach out!

it's called sublimation

Explanation:

it's called sublimation.

Answer:B

Explanation:

I just did that

Answer:

25 m/s

Explanation:

This question can be solved using equation of motion

[tex]v^2 = u^2 + 2as[/tex]

where

v is the final velocity

u is the initial velocity

s is the distance covered while moving from initial to final velocity

a is the acceleration

_____________________________________________

Given

box moved for distance of 62.5 m

Friction slows the box at –5.0 m/s2----> this statement means that there is deceleration , speed of truck decreases by 5 m/s in every second until the box comes to rest. Friction causes this deceleration.

thus in this problem

a = -5.0 m/s2

V = 0   as body came to rest due to friction deceleration

u the initial velocity we have to find

the initial velocity of box will be the same as speed of truck, as the box was in the truck and hence box will pick the speed of truck.

so if we find speed of box, we will be able get sped of truck as well.

using equation of motion

[tex]v^2 = u^2 + 2as\\0^2 = u^2 + 2*-5* 62.5\\0 = u^2 - 625\\u^2 = 625\\\sqrt{u^2} = \sqrt{625} \\u = 25[/tex]

Thus, initial speed with the truck was travelling was 25 m/s.

Answer:

Precipitation static is an electrical charge on an airplane caused by flying through rain, snow, ice, or dust particles. Charge also accumulates through friction between the aircraft hull and the air. When the aircraft charge is great enough, it discharges into the surrounding air.

Explanation:

I hope this helps!

Answer:

A chemical change occurred, so even if Cash heats it, the white solid will remain

Explanation:

There are two types of changes that occur in Chemistry viz; physical change and chemical change. Physical changes are those changes do not involve any change in the chemical composition of the substances involved while a chemical change involves a change in chemical composition.

In a chemical change, there are characteristics signs such as formation of gaseous bubbles, solid precipitates etc. as the information in this question depicts. According to this question, Cash mixes two clear liquids together which results in the formation of bubbles and a white solid that settles at the bottom. Hence, THIS REPRESENTS A CHEMICAL CHANGE

Most chemical changes are usually irreversible i.e. they don't return to their original form. Hence, even if Cash heats it, the white solid will remain.

Answer:

A chemical change occurred, so even if Cash heats it, the white solid will remain

Answer:

1. False

2. True

3. True

4. True

5. True

6. False

7. True

8. False

9. False

10. True

11. True

12. True

13. True

14. True

15. True

Given :

Cindy's house is 600 meters away. Jim runs as hard as he can with a speed of 5.3 m/s and Harry jogs with a speed of 8.2 m/s.

To Find :

How long will Harry have to wait for Jim when he gets to Cindy's house.

Solution :

Time taken by Harry to reach Cindy's house :

[tex]t_1=\dfrac{600}{8.2}\ s= 73.17\ s[/tex]

Time taken by Jim to reach Cindy's house :

[tex]t_2=\dfrac{600}{5.3}\ s=113.21\ s[/tex]

Time taken by Harry to wait for Jim is :

T = [tex]t_2-t_1[/tex] = 113.21 - 73.17 s = 40.04 s

Hence, this is the required solution.

Answer:

solar wind

radio wave plux

solar flares

coronal mass ejections

coronal heating

Answer:

C

Explanation:

This is a simple trigonometrical problem

FH=cos(35)*24=19.66

FV=sin(35)*24=13.77

Hope this Helps

The magnitudes of the horizontal and vertical components will be FH = 20. N and Fy = 14N. Option C is correct.

A vector is a quantity or phenomena with magnitude and direction that are independent of one another. The phrase also refers to a quantity's mathematical or geometrical representation.

If no vector can be written as a linear combination of the others, a set of vectors is said to be linearly independent.

Given that 24-newton force acting at 35° above the horizontal.

The given force is resolved as;

[tex]\rm F_H=24cos(35)^0=19.66\\\\ F_V=24sin(35)=13.77[/tex]

The magnitudes of the horizontal and vertical components will be FH = 20. N and Fy = 14N.

Hence,option C is correct.

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Explanation:

Trains that use magnetic levitation (maglev) are suspended above the track, which greatly reduces friction from the rails and allows the trains to travel between 250 and 300 miles per hour! Magnetic levitation uses attractive and repulsive magnetic forces to suspend and control the speeds and motion of the trains.

Answer:

from top (youngest) to bottom (oldest) -

Conglomerate

Brecca

Shale

Dolostone

Explanation:

got it wrong from the person above and then it said this the right answer lol.

The oldest rock layer among the given options is shale then it is dolostone and then conglomerate and the youngest rock layer is Breccia.

Sedimentary rocks are formed from the sediments by river and ocean. These are developed over time by the action of wind and water. Sedimentary rocks are deposition or accumulation or minerals on the earth surface.

There are different types of rock layers based on the minerals present, age and formation.Shale rock is a clastic sedimentary rock formed flakes of clay minerals.

Conglomerate rocks is another clastic rock containing round clasts of more than two millimeters in diameter. Dolostone or dolomite is limestone and breccia is a mineral cement with fine sharp angled fragments.

The oldest among this is shale and the order for others from oldest to youngest is dolostone, conglomerate and breccia.

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Answer:

y5

Explanation:

The magnetic force is perpendicular to the velocity and the magnetic field. The direction of the magnetic force can be determined using the right-hand rule, putting the fingers of the right hand in the direction of the velocity and curl your fingers or roll them in the direction of the magnetic field. The thumb gives the direction of the magnetic force. If the charge is negative, the direction of the force is opposite to the result obtained using the right-hand rule.

The direction of a moving charge's magnetic field lines is always perpendicular to the plane created by velocity and magnetic force.

If the positive charge is moving upwards the corresponding current is also upwards, the magnetic field is towards the south.

"Magnetic force, attraction or repulsion that arises between electrically charged particles because of their motion. It is the basic force responsible for such effects as the action of electric motors and the attraction of magnets for iron."

"The magnetic field is the area around a magnet in which the effect of magnetism is felt. We use the magnetic field as a tool to describe how the magnetic force is distributed in the space around and within something magnetic in nature."

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Answer:

3.67 m/s²

Explanation:

Draw a free body diagram.  There are two forces on the object:

Weight force mg pulling straight down,

and normal force N pushing perpendicular to the plane.

Sum the forces in the parallel direction.

∑F = ma

mg sin θ = ma

a = g sin θ

a = (9.8 m/s²) (sin 22.0°)

a = 3.67 m/s²

Answer: Your answer is D. Curie point

Hope this helps!

Answer:

Thank you ☺️☺️

Answer:

True.

Explanation:

This is because the solid particles are very close to each other due to strong intermolecular force attraction between them.