Methods To Reduce The Frictional Force Between The An Object And Surface Which It Is In Contact. (2024)

Answer:

[tex]K.E = \frac{1}{2} m {v}^{2} \\ {v}^{2}_i = {v}^{2} _x + {v}^{2} _y \\ = {(6)}^{2} + {( - 2)}^{2} = 36 + 4 = 40m. {s}^{ - 1} \\ K.E_i = \frac{1}{2} (3) (40) = 60J \\ \\ {v}^{2}_f = {v}^{2} _x + {v}^{2} _y \\ = {(8)}^{2} + {(4)}^{2} = 80m. {s}^{ - 1} \\ K.E_i = \frac{1}{2} (3) (80) = 120J \\ W_{net}=K.E_f-K.E_i \\ = 120J - 60J \\ = 60J[/tex]

Answer:hushing

Explanation:

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Answer:

The chemistries and technologies behind coin cells vary. Some are alkaline, others are lithium. Alkaline coin cell batteries have a nominal voltage of 1.5V. Lithium coin cell batteries, on the other hand, have a nominal voltage of 3V.

Answer:

Asteroids:

Explanation:

Asteroids are rocky, airless worlds that orbit our sun, but are too small to be called planets. Tens of thousands of these minor planets are gathered in the main asteroid belt, a vast doughnut-shaped ring between the orbits of Mars and Jupiter. Asteroids that pass close to Earth are called near-earth objects.

Answer:

conserving water is important because it keeps water pure and clean while protecting the inviorment

Answer:

A C D

Explanation:

2022 EDG

Answer:

Circular motion requires a"centripetal" force. Without a centripetal force, an object cannot travel in circular motion.

Narrow tires bikes are used in racing competitions.

Bikes that have narrow tires are used in race because narrow tires have an advantage over wider tires due to their higher speed as they provide less air resistance. Less air resistance on the bike having narrow tires allows the bike to move faster as compared to those bikes having wider tires due to more air resistance so we can conclude that bikes with narrow tires are used in racing competitions.

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Road bikes are meant for optimum performance

The option that gives the type of bikes that have the given specifications is the option;

road

Reason:

A road bike is a bike usually for competitive driving, meant for roads and that are paved roads, and not for racing tracks or rough terrains.

The specifications of a road bike are;

The frames are very lightweight, including the wheels and other parts

The handlebar is curled

The wheels of the tires are narrow

A front fork made of carbon fiber composite

It does not have have front or rear suspension

Includes variety for male and female riders

Therefore, the correct option is; road

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The thing to do here is to balance the eqns that is to balance the stoichometric ratios or coefficients of the cpds.

hope you understand. all the best.

Answer:

Our consciousness is why they exist.

In Aristotle's Metaphysics, there are four causes of existence or change in nature: the material cause, the formal cause, the efficient cause, and the final cause.

We do know that the world will end sometime between 7 and 8 billion years from now that's all we know as of right now.

Answer:

Một người đi xe đạp chuyển động trên một đoạn đường thẳng AB có độ dài là s. Tốc độ của xe đạp trong nửa đầu của đoạn đường này là 12 km/h và trong nửa cuối là 18 km/h. Tính tốc độ trung bình của xe đạp trên cả đoạn đường AB.. Bài 2.17 trang 10 Sách bài tập (SBT) Vật lí 10 – Bài 2: Chuyển Động Thẳng Đều

Một người đi xe đạp chuyển động trên một đoạn đường thẳng AB có độ dài là s. Tốc độ của xe đạp trong nửa đầu của đoạn đường này là 12 km/h và trong nửa cuối là 18 km/h. Tính tốc độ trung bình của xe đạp trên cả đoạn đường AB.

Answer:

Which month has the longest daytime? shortest daytime?

Explanation:

i’m sorry i can not do the whole page but i’ll do problem 5, the answer would be b in since it asked find the acceleration which is 1.5s to t=3s

please give brainliest! good luck my friend

this is your answer

- BRAINLIEST answerer ❤️

Speed=13m/sTime=5.8s

[tex]\\ \sf\longmapsto Speed=\dfrac{Distance}{Time}[/tex]

[tex]\\ \sf\longmapsto Distance=Speed\times Time[/tex]

[tex]\\ \sf\longmapsto Distance=13(5.8)[/tex]

[tex]\\ \sf\longmapsto Distance=75.4m[/tex]

Answer:

Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. Meteorologists describe the atmospheric pressure by how high the mercury rises.

Explanation:

Answer:

Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. Meteorologists describe the atmospheric pressure by how high the mercury rises.

Atmospheric Pressure

The air around you has weight, and it presses against everything it touches. That pressure is called atmospheric pressure, or air pressure.

GRADES

6 - 12+

SUBJECTS

Earth Science, Meteorology, Geography, Physical Geography, Physics

Answer:

Not testable.

Explanation:

The temperature of coffee can change, as the coffee gains or loses heat to the surroundings or the room temperature. For example, if you put a hot coffee in a cold room, the coffee will lose heat to the surroundings/room temperature, eventually making it colder.

Explanation:

Pressure due to the weight of a liquid of constant density is given by p=ρgh p = ρ g h , where p is the pressure, h is the depth of the liquid, ρ is the density of the liquid, and g is the acceleration due to gravity

Answer:Pressure due to the weight of a liquid of constant density is given by p=ρgh p = ρ g h , where p is the pressure, h is the depth of the liquid, ρ is the density of the liquid, and g is the acceleration due to gravity.

Explanation:

gravitational acceleration is 9.8m/s² on earth

1.62m/s² on moon (1/6 th of earth)

24.79m/s² on Jupiter (2.4 times of earth)

8.87m/s² on Venus (very close to Earth because of their diameter)

from,

F = ma

find the force with the above gravitational acceleration data.

hope you understand. all the best!

The acceleration of the object after 3 seconds of fall is -9.8 m/s².

The given parameters;

Initial velocity of the object, u = 0Time of motion of the object, t = 3 seconds

Acceleration is the change in velocity per change in time of motion.

The acceleration of the object after 3 seconds of fall is calculated as follows;

Since the object is in free fall, the object experiences only acceleration due to gravity.The magnitude of this acceleration due to gravity is 9.8 m/s²The direction of this acceleration is downwards

Thus, the acceleration of the object after 3 seconds of fall is -9.8 m/s².

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Answer:

3 m/s

Explanation:

The slope is distance divided by time, also known as 'speed'.

15 meters / 5 seconds = 3 meters per second.

Answer: I don't know

Explanation:

Answer:

B

explanation:

I think B is right hope it will be help

K.E=3.5JVelocity=17m/sMass be m

[tex]\\ \sf\Rrightarrow K.E=\dfrac{1}{2}mv^2[/tex]

[tex]\\ \sf\Rrightarrow 3.5=\dfrac{1}{2}m(17)^2[/tex]

[tex]\\ \sf\Rrightarrow 7=289m[/tex]

[tex]\\ \sf\Rrightarrow m=\dfrac{7}{289}[/tex]

[tex]\\ \sf\Rrightarrow m=0.024kg[/tex]

Answer:

90 meters.

Explanation:

The correct answer is: B.) 90 m

The distance travelled by the ball before hitting the ground first is 90 m

Data obtained from the question Initial velocity (u) = 30 m/sAngle of projection (θ) = 45°Acceleration due to gravity (g) = 10 m/s²Range (R) =?

How to determine the range

The distance travelled (i.e range) of the ball can be obtained as follow:

R = u²Sine(2θ) / g

R = 30² × Sine (2×45) / 10

R = 900 / 10

R = 90 m

Thus, the range of the ball is 90 m

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Answer:

3168 J

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 66 × 10 × 4.8 = 3168

We have the final answer as

3168 J

Hope this helps you

Answer:

1.responsible

2.others

Explanation:

hope its help