A tractor pulls a trainer at a constant speed the tractor exerts a forward force of 1600N on the trailer. What is the force exerted by the trailer on the tractor?

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

the real answer is

O metals and nonmetals, electrons transferrednonmetals and metals, electrons shared

Answer: Quantitative

Explanation: because quantitative is numbers

Answer:

Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.

Answer:

Favorable sites include the tops of smooth, rounded hills; open plains and water; and mountain gaps that funnel and intensify wind. Wind resources are generally more favorable for electricity generation at higher elevations above the earth's surface

Answer:

The girl exerts more pressure.

Explanation:

Pressure can be defined as the force exerted normally or perpendicularly per unit area.

i.e P = F/A

Girls

Area of the heel = 1cm² = 10^(-4) m²

Force = mg = 50 × 10 = 500N

Pressure =

[tex] \frac{500}{10 ^{ - 4} } [/tex]

[tex] = 5 \times {10}^{6}[/tex]

Elephant

Area = 250cm² = 2.5 x 10^(-2)b m²

Force = mg = 40000N

Pressure =

[tex] \frac{40000}{2.5 \times {10}^{ - 2} } [/tex]

[tex] = 1.6 \times {10}^{6} [/tex]

Answer:

41.16J

Explanation:

m =2.8 kg

h1 = 4.5 m

h2 = 3 m

PE at top = mgh1= 4.5mg

PE at 3 m = mgh2= 3mg

energy is conserved los in PE = gain in KE

KE at 3 m above the ground

= mg(4.5 - 3) J

= 2.8 kg*9.8m/s^2*1.5 m

= 41.16 joules

Answer: 42 m/s

Explanation:

m=2.8 kg , V1=0 m/s , h1=4.5 m , h2=3 m , V2=? m/s

E1 = E2 >>> K1 + U1 = K2 + U2

Kinetic Energy (KE) = K = [tex]\frac{1}{2}[/tex] m [tex]V^{2}[/tex]          Potential Energy (PE) = U = mgh

[tex]\frac{1}{2}[/tex] m [tex]V1^{2}[/tex] + mg[tex]h_{1}[/tex] = K2 + mg[tex]h_{2}[/tex]  >>> V1=0 >> K1=0 >>> K2 = -mgΔh

K2 = 2.8 kg × 10 m/s2 × 1.5 m = 42 m/s

a) An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. This is because a positive and negative electric charge is produced, therefore the balloon sticks to the wall.

b) When an object is thrown up, it comes back to ground because of gravitational attraction force of earth.

c) Mountaineers suffer nose bleeding at higher altitudes because the oxygen level decreases with increase in altitude, which the body cannot adjust.

d) Foundations of high rise buildings are kept wide because more is the area of contact, less is the pressure efforts. So, foundations are wide so as to decrease the possibility of the building from falling down.

e) Deep sea divers or high altitude fliers wear special suits so as prevent their body from being crushed by the water pressure. Since water pressure is maximum at deep seas and oceans, therefore, more is the risk of being injured.

f) Walls of a dam are thickened near the base so that the dam can handle the kinetic energy pressure and prevent itself from breaking down, which if not, can lead to flooding.

HOPE IT HELPS...

Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another. ... In essence, energy can be converted from one form into another.

So , the answer is true

Answer:

melting

Explanation:

that works best

Answer:

[tex]\huge\boxed{\sf a = 5 \ ms^{-2}}[/tex]

Explanation:

Given:

Force = f = 60 N

Mass = m = 12 kg

Required:

Acceleration = a = ?

Formula:

F = ma

Solution:

Rearranging formula

a = F / m

a = 60 / 12

a = 5 ms⁻²

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

D.

for the scalar product between two vectors to be 0 either one of thm is zero vector or they are perpendicular to each other

[tex]\boxed{\sf P=I^2R}[/tex]

[tex]\\ \sf\longmapsto I^2=\dfrac{P}{R}[/tex]

[tex]\\ \sf\longmapsto I^2=\dfrac{9.28}{210}[/tex]

[tex]\\ \sf\longmapsto I^2\approx0.04[/tex]

[tex]\\ \sf\longmapsto I\approx\sqrt{0.04}[/tex]

[tex]\\ \sf\longmapsto I\approx\sqrt{\dfrac{4}{100}}[/tex]

[tex]\\ \sf\longmapsto I\approx\dfrac{\sqrt{4}}{\sqrt{100}}[/tex]

[tex]\\ \sf\longmapsto I\approx\dfrac{2}{10}[/tex]

[tex]\\ \sf\longmapsto I\approx0.2A[/tex]

Answer:

.21

Explanation:

acellus

Answer:

element name = neon

no of proton = 10

no. if neutron = 9

atomic no. = 10

atomic weight = 20.17179u

it lies in group 18 and period 2

it is nonmetal because it is a noble gas .

hope this helped you ☺️

Hi,

The man on the ground in standing position has more pressure. This is because when he stands, only his legs are in contact with the ground. While lying, his body is more in contact with the ground, therefore, he exerts less pressure.

To the point, a man standing position on the ground had more pressure.

More is the area of contact, less is the pressure efforted.

Thank you...

Explanation:

molecular formula consists of the chemical symbols for the constituent elements followed by numeric subscripts describing the number of atoms of each element present in the molecule. The empirical formula represents the simplest whole-integer ratio of atoms in a compound.

Answer:

The symbollic representation of a molecule of an element or a compound present in a molecule is called molecular formula.

For example: molecular formula of sodium chloride is NaCl.

Explanation:

'What is the magnitude of the force needed to stop the horses and bring the box into equilibrium?' ≈42N; according to the vectors rules.

'Where would you locate the rope to apply the force?' - in point D.

PS. zoom out the attached picture.

Answer:

Option (I)

Explanation:

The independent varible is arm length. Therefore, to eliminate the effect of other factors and make a valid and effective conclusion, only the arm length should be changed, while other factors (mass, force and materials) should remains the same.

Answer: Only the arm length should be changed. The mass should remain the same.

Explanation:

Here we can study the different temperatures of each one of the layers of the sun.

We will find that the way that the scientist can identify which layer are they studying is "The lowest temperatures are from the photosphere."

A brief description of the temperature of each layer is:

Center of the sun: about 15 million K

Radiative Zone:  Goes from 7 million K to 2 million K.

Convection Zone: goes from 2 million K to 5800K

Photosphere: Is in average 5800 K , but there are sunspots with lower temperatures, of around 3800 K.

Chromosphere: goes from 4300 K to  8300 K

Corona: Around 2 million K.

So now we can analyze each of the options to see which ones make sense.

A) The highest temperatures are from the corona.

This is false, we can see that in the center and in the radiative zone we have larger temperatures than in the corona.

B) The lowest temperatures are from the photosphere.

While on average the temperature of the photosphere is larger than the smaller temperature of the chromosphere, in the photosphere we have the sunspots, and there we have the smallest temperatures in the whole sun, so this is true.

C) The lowest temperatures are from the core (or center).

Clearly false, there we have the larger temperatures.

D)  The highest temperatures are from the radiative zone.

Again false, the larger temperatures are in the center.

So the only true option is "The lowest temperatures are from the photosphere."

If you want to learn more, you can read:

https://brainly.com/question/12117482

Answer:

The lowest temperatures are from the photosphere

Explanation:

I just took this quick check on connexus

Explanation:

I hope it helped U

stay safe stay happy

Explanation:

Pesticides are those substance whoch increase the fertlite rate of the soil but it will damage rhe soil it remine from a long time it descrese the rate of fertize rate

Answer:

The metal base and the plastic housing are sealed together to complete the tea kettle body.

Explanation:

hope this helps :D

Answer:

1.) distance is always positive while displacement can be negative as well.

2.) distance cannot be 0 but displacement can be 0.

3.) distance is a scalar quantity while displacement is vector quantity.

It would be 0.01023.

0.010229 has 5 sig. fig.'s (leading zeros do not count)

So rounding to 4 sig. fig.'s is just a matter of rounding off the last digit, which leaves you with 0.01023.

Answer:

False

Explanation:

This depends on how much air is in the ball, I think

Answer:

Hope this can help u

Explanation:

A lactometer is a specialized hydrometer used measure the relative density and purity of milk. ... If the milk is pure the readings will be close to 1 and if the amount of water in the milk increases then the markings will be close to 3.

Answer:

Explanation: 100 watts is a unit of power.

A watt is also the amount of energy being consumed. So the more watts the brighter the light bulb is lit.

885 hz for the highest

875 hz for the lowest

acellus correct

Answer:

A dog runs from his home & goes 400 m around the block before reaching back home. What is the dog's total distance & displacement?

Distance: 400 m & displacement:0m

Explanation:

Option B is the answer.

Hope it helps.

Answer:

Angular momentum is inertia of rotationmotion. Linear momentum is inertia oftranslation motion. The big difference is that the type of motion which is related to each momentum is different.