PHYSICS MIDDLE SCHOOL

What is the mass of a bowling ball if it has a weight of 80N?

Answers

Answer 1
Answer:

Answer:

8.1577297 kilograms

Explanation:

because its only 80N when your talking about different metric but if you wanted to know it in killograms there is your answer I hope this helps and can you please make me brainliest :)))
Answer 2
Answer: 8.1577297 Kilograms :)

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Dale and Alex push on opposite sides of a couch. Dale pushes to the left witha force of 100 N, while Alex pushes to the right with a force of 175 N. If thecouch has a mass of 55 kg, what is the acceleration of the couch?O A. 5 m/s2 rightO B. 5 m/s2 leftO c. 1.4 m/s? rightO D. 1.4 m/s2 leftSUBMIT
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If a star's parallax angle is too small to measure, what can you conclude about the star's distance from the Earth?

Answers

Answer:

The star is too distant to be measured by parallax method. This happens when parallax angle is of the order of the least count of measuring system or less than that.

Explanation:

How can i make an egg survive an egg drop

Answers

You could cook it and then drop it or you can always wrap it in bubble wrap. 
you can boil the egg and wrap it in bubble wrap

What is the root word for organelle a. elle
b. anelle
c. org
d. organ
please help
12 points

Answers

A root word is the basic word before you add a prefix or suffix.
So the root word of organelle is d.organ
the answer is D - organ
hope this helps

explain why a high speed collision between two cars would cause more damage than a low speed collision between the same two cars?

Answers

Significant transfer of kinetic energy and momentum in high-speed collision causes more damage than low-speed collision.

From the laws of momentum and kinetic energy, a collision between two cars at a high speed would result in more damage than a collision between the same two cars at a moderate speed.

Momentum: An object's momentum is calculated by multiplying its mass by its velocity. The momentum of both cars is a crucial element in a collision. When two cars meet quickly, they have more momentum, which increases the amount of motion and force that is applied to the impact. The two cars' combined momentum increases the force of the collision.

Kinetic Energy: The energy of motion that an object possesses as a result of its mass and velocity. An object's kinetic energy is inversely related to its square of velocity. In comparison to a low-speed accident between the same two cars, the kinetic energy involved in a high-speed collision is substantially more.

A significant quantity of kinetic energy and momentum are transferred to the point of impact when two cars crash at high speed.

In contrast, kinetic energy and momentum are less engaged in low-speed collisions, which leads to less force being applied to the cars and their occupants.

Hence, due to significant transfer of kinetic energy and momentum in high-speed collision causes more damage than low-speed collision.

To learn more about Kinetic energy, here:

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I've would cause more damage, because there is nore momentum and input force equals output force and the momentum is transferred between the two cars more so than if they had a lower velocity

If you push a book against a wall hard enough, it will not slide down even though gravity is pulling it. Use what you know about Newton’s laws of motion to explain why the book is not falling. (giving away brainliest!)

Answers

Frictional force is defined by the following formula -

f = coefficient of friction (u) X Normal reaction exerted by the surface (N)

So, f = u X N.

Now 'u' is a constant for given surfaces in contact ( keep in mind that it depends on both the surfaces that are in contact with each other, here wall and the book that you are pressing)

Now, Normal reaction is equal and opposite to the force exerted by an external force on the surface, PERPENDICUAL TO THE SURFACE ( or the perpendicular component of the external force). The external force exerted on the surface which is vertical to it, in this case, is equal to the force that you are applying while you are holding/pressing the book against the wall.

So, at any point of time, frictional force = u X (Force you are applying on the surface, via the book)

Or, f = u X F, where,
f = frictional force,
u = coefficient of friction, and
F = Perpendicular component of the force exerted by you on the book towards the surface.

Now direction of f -
Frictional force always act parallel to the surface and in opposite direction to the direction of motion.

In absence of friction, book will fall down, because of gravity acting on it. So friction will try to act in the opposite direction of this motion. So, upwards in this case.

If let's say you have a metal object placed between magnets, which is applying more force on it than gravity, in upwards direction; and you try to press it against the wall, the motion of object will be upwards, so friction will then act downwards.

Friction always opposes the direction of motion in which the object would have moved because of RESULTANT FORCE on it in absence of friction.

Takeaways in English (or, common observation) -
1) Harder you press the book against the wall, harder it will be for a person to move the book on the surface of the wall, while you are pressing it. Because of higher friction.

2) The more you move the book on the wall, while keep on pressing it, warmer the surface of the book which is in contact with wall will be. Because if more energy is dissipated per second to overcome friction, which gets converted to heat energy.

2.1) Harder you press, book will heat up faster.

3) Harder you press the book against the wall, lesser chance are that it will fall down. Because more frictional force is now acting on it to hold it against gravity.

4) Heavier the book, more frictional force is needed to hold it from falling, and that is why you have to press it harder to hold Heavier books.

5) That is all I can think of right now. Try applying this concept in things you see around.
12.8K viewsView 6 Upvoters · Answer requested by Muhammad Shouman
Related Questions (More Answers Below)

In an open system such as a campfire matter can

Answers

In open system such as campfire matter can be exchanged between system and surroundings.

What is matter?

Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.

Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.

The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.In open systems which are not limited by the boundaries exchange of matter can take place between system and surroundings .

Learn more about matter,here:

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In an open system such as a campfire, matter can lose particles, gain particles or exchange particles.
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