Need help as fast as possible please
I will mark BRAINLIST only for correct answers babes :)
Thank you!

Answer:

see below

Explanation:

let one direction be negative and the other direction be positive

so

right = positive

left = negative

up = positive

down = negative

thus

d) -80 + 100 = 20 N

e) 35 - 55 = -20 N

hope this helps, please mark it brainliest

Explanation:

KE = 1/2mv^2

6,250 J =1/2(250kg) v ^2

6250 J = 125kgv^2

125kg. 125kg

v =

[tex] \sqrt{50} [/tex]

Answer:

Please find attached pdf

Explanation:

Answer:

No, it is not necessary for them to have same mass.

Explanation:

Let both bodies have a density d1 and d2 respectively.

Since their volumes are equal V1 = V2

we know that, https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7Bvolume%7D

Hence, d1 =  and d2 =    

Taking the ratio of densities,we get

This implies that unless the bodies have same densities, the mass of the two bodies will not be same.

Answer:

As indicated by Newton's law of attraction each article or body in the universe draws in every single item towards one another and that power of fascination is straightforwardly relative to the result of their masses and contrarily corresponding to the square of the distance between them.  

The power of gravity between two articles will diminish as the distance between them increments. The two most significant elements influencing the gravitational power between two items are their mass and the distance between their focuses. As mass increments, so does the power of gravity, however an increment in distance mirrors a reverse proportionality, which makes that power decline dramatically.  

At that point by Newton's All inclusive Law of Attractive energy;  

F=GMm/R^2  

Mm= result of the majority  

R=Distance Between the two masses by focus.  

On the off chance that R is multiplied, new force=GMm/(2R)^2  

=GMm/4R^2  

Unique Power/New Force=4/1  

F/4=New Power

Answer:

KE = 1/2 mv2

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402)

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 J

KE = 1/2 mv2 KE = 1/2 (0.50kg) (40m / s) 2 KE = 1/2 (0.50) (402) KE = 0.5 x 0.50 x 402 KE = 400 JKE = 0.4 KJ

Answer:

K. E = 1/2MV²

K. E = 1/2 x 0.50kg x (40m/s)²

K. E = 1/4kg x 1600m²/s²

K. E = 400

Answer:

Sound waves are translated into transverse waves to know the frequency, amplitude, wavelength etc of the waves.

Explanation:

They translate the sound waves to know the depth about that specific waves and translating it to transverse waves makes it easier.

Hope it helps :D

Answer:

[tex]2.03\times 10^5\ Pa[/tex]

Explanation:

We need to find the extra pressure when you are 10 meters under water. The net pressure on us is given by :

[tex]P=P_o+\rho gh\\\\P=1.05\times 10^5+1000\times 9.8\times 10\\\\P=2.03\times 10^5\ Pa[/tex]

So, [tex]2.03\times 10^5\ Pa[/tex] is exerted on us at 10 m under water.

Answer:

relay switch

Explanation:

relay switch is the answer

see below

Explanation:

let One Direction to be the positive and the other direction be negative

let right = positive

left = negative

up = positive

down = negative

a) 100 - 50 = 50N

b) 500 - 330 = 170N

c) 70 - 70 = 0 N

hope this helps

please mark it brainliest

Answer:

They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time.

Explanation:

Answer:

Power = Energy transferred / time

Explanation:

Answer:

I am in favor of the dance event being in may. Because it is nice weather outside, more people will decide to come and spend their time there. It is also light in the evening in may, meaning that you could have the dance event at any time, and younger people will still feel safe at night, meaning their parents will be more open to lwtting kids go.

[tex] \\[/tex]

Two isotopes of helium ( helium 3 and helium 4) show superfluidity whem they are liquified by cooling to a very low specific temperature. One isotope of rubidium and lithium posses this property at low temperature.

Hope It Helps!

Answer:

a. The friction force acting on the truck's tires during the turn, is approximately 20,875 N

b. The maximum velocity with which the truck could make the bend is approximately 31.654 m/s

Explanation:

The given parameters of the truck are;

The mass of the truck, m = 2.5 × 10³ kg

The tire material = Rubber

The radius of the turn the through which the truck moves = 120 meters

The material and condition of the surface = Dry asphalt

a. The coefficient of friction of rubber tires on dry asphalt, μ ≈ 0.85 (researchgate (internet source))

The weight of the truck, W = m × g

Where;

m = The mass of the truck = 2.5 × 10³ kg

g = The acceleration due to gravity = 9.8 m/s²

∴ W = 2.5 × 10³ kg × 9.8 m/s² = 24,500 N

The force of friction acting on the tires, [tex]F_f[/tex] = W × μ

∴ [tex]F_f[/tex] = 24,500 N × 0.85 ≈ 20,875 N

The friction force acting on the truck's tires during the turn, [tex]F_f[/tex] ≈ 20,875 N

b. The centrifugal force the truck observes while turning through the bend, 'F', is given as follows;

F = m·v²/r

Therefore, the maximum velocity with which the truck could make the bend, 'v', is given when fiction force, '[tex]F_f[/tex]', is equal to the centripetal force, F

When [tex]F_f[/tex] = F, we have;

W × μ = m·v²/r

∴ 20,875 N = 2.5 × 10³ kg × v²/(120 m)

∴ v² = 20,875 N × (120 m)/(2.5 × 10^3 kg) = 1002 m²/s²

v = √(1002 m²/s²) ≈ 31.654 m/s

The maximum velocity with which the truck could make the bend, v ≈ 31.654 m/s

According to this question;

QUESTION 1:

Where;

QUESTION 2:

Learn more about force of friction at: https://brainly.com/question/4230804?referrer=searchResults

Answer:

to prevent the derailing of the train due to thermal expansion.

Answer:

Iron are good conductors of heat and electricity. Being a good conductor it expands as well as contracts with the change of temperature.When heat is applied,they expands because molecules inside the element gets excited and number of molecules inside it increases in tremendous amount,so it leads to expansion of iron. So when the temperature is lowered it comes in its normal state.

The term for this is called as thermal expansion or contraction.The gap in the joint between 2 rails is to prevent from the expansion of the iron. It is necessary ,if not there will be change in structure,it may buckle and chance of derailed is increased.

Explanation:

The gap in the joint between to rails is to compensate for the expansion of the material of rail during summer.

The metals expand or contract with the changes in temperature. The expansion or contraction depends on the coefficient of thermal expansion of the material. Based on this property of the metal, the gap in the joint of two rails is provided.

Answer:

Displacement a combination of distance

Explanation:

I'm not sure eh

Answer:

work = 500*3 = 1500 J

1500J in 5 sec = 300 watts

Explanation:

Answer:

it is using the same power

Explanation:

it is using the same power because it has to move longer and a farther distance while the other one has double the power but less the distance

Answer:

[tex]k.e = \frac{1}{2} MV {}^{2} \\ 75 = \frac{1}{2} m10 {}^{2} \\ \frac{75}{100} = \frac{1}{2} m \\ \\ 0.75 \times 2 =m \\ m = 1.5kg[/tex]

the mass of car is 1.5kg

Answer:

Landforms affect where people build houses and communities. Many people live on plains because it is easy to travel and to farm on flat land. Other people live in valleys, which are the land between mountains or hills. The soil in valleys is good for farming.

Answer: lake

Explanation: it would almost always be cool. And cool things are inside!

Answer:

the friction force f=36

and the coefficient of friction =0.45

Answer:

It's C, you guys!!!!

Explanation:

Answer:

a in high frequency waves

Explanation:

because of the thermal radiation from the sun

Answer:

The answer is B, "In low frequency-waves"

Explanation:

I got this right on my lesson! Have a great day! (-;

Answer:

Three types of electromagnetic waves, used to transmit various information

Explanation:

A form of energy waves having both electric & magnetic fields are Electromagnetic waves. Three types -

Radio Waves - These have longest wavelengths & transmit data through radio, satellites, radar .

Micro Waves - These have shorter wavelengths & are used in cooking appliances & predicting weather.

X rays - These have more short wavelength and can penerate soft tissues like skin & muscle, hence are used for medical examining

Answer:

Three types of electromagnetic waves that are commonly used to transmit information are:

Radio Waves:

Radio waves are used for transmitting radio signals, television signals, and wireless communication. They are received by devices such as radios, televisions, and mobile phones with radio receivers.

Microwaves:

Microwaves are used for various purposes, including satellite communication, microwave ovens, and wireless data transmission. They are received by devices such as microwave antennas, satellite receivers, and Wi-Fi routers.

Light Waves (Optical Waves):

Light waves, specifically in the form of optical waves, are used for fiber optic communication, which involves transmitting data through optical fibers. They are received by devices such as optical receivers, which convert the light signals back into electrical signals for processing.

Each type of wave requires specific devices to receive and interpret the transmitted information effectively.

Answer:

A

Explanation:

Beacuse it has 2 angles

Answer:

b I do believe sorry if I'm wrong

Answer:

light ray i think

Explanation:

Answer:

Explanation:

Density = mass/volume

132g/(48.9 cm³) = 2.7 g/cm³

(27 g)/(3 cm³) = 9 g/cm³

512 g/(65 cm³) = 7.9 g/cm³

1.2 kg/(3243 cm³) cm³ = 1200 g/(3243 cm³) = 0.37 g/cm³

Answer: Longitudinal

Explanation: