Which of the following universal forces is the weakest? A) electric
B) gravitational
C) magnetic
D) strong nuclear

I also need some explanation for this one 

Answers

Answer 1
Answer:

Answer:

Option (B)

Explanation:

The gravitational force is usually defined as the force of attraction that occurs due to the presence of the object's mass. The mass of the object and the force of gravity is directly proportional to each other. At the atomic as well as at the subatomic levels, this gravitational force of gravity is comparatively so weak because the masses of these atoms, subatomic particles are extremely very small. This force has a strength of about 10^-40 and this far smaller in comparison to the strength of electromagnetism.

On the other hand, the other universal forces such as the electric force, magnetic and strong nuclear force are very much stronger than the gravitational force. The nuclear force is strongest of all, where it is 100  times stronger than the electromagnetic force and approximately 10^36 times stronger than the gravitational force.

Thus, the correct answer is option (B).

Answer 2
Answer: Well, electric and magnetic are actually the same in nature (as basic force in the Universe). The four, in decreasing order of strength, are:
Strong nuclear, Weak nuclear, Electric/Magnetic (in roughly the same range) and Gravitational (much weaker than Electric/Magnetic -- a magnet less than 1 kg beats Earth which is quite a lot of gigatons, roughly)

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What is the unit of mu (m) in the equation of Ffriction=miu F formal explan

Answers

Both F's are forces, so µ must be unitless/dimensionless.

F[friction] = µ F[normal]

Or, more explicitly in terms of the units:

(Newtons) = (constant) (Newtons)

The work done by stretching a certain spring increases by 0.13x joules per centimeter (where x is the displacement, in centimeters, beyond the spring's natural length). How much work (in Joules) must be done in order to stretch the spring from x?

Answers

Answer:

W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))

Explanation:

The work done by stretching the spring is:

W = 0.13\int\limits^{x_(f)}_{x_(o)} x\, dx

W = 0.06\cdot (x_(f)^(2)-x_(o)^(2))

What kind of glass is used for car head lamp​

Answers

Answer:

borosilicate glass

Explanation:

headlamp glass is a borosilicate glass by gravity feed

an object is attached to a vertical ideal massless spring and bobs up and down between the two extreme points a and b. when the kinetic energy of the object is a minimum, the object is located

Answers

The correct answer for the question that is being presented above is this one: "A) at either A or B. "
Here are the following choices:
A) at either A or B. 
B) midway between A and B. 
C) 1/3 of the distance from A to B. 
D) 1/4 of the distance from A to B. 
E) 1/ times the distance from A to B.

Final answer:

The kinetic energy of a mass oscillating on a vertical spring is at a minimum when the object is at the extreme points of its motion. This is because the object has momentarily stopped moving, leading to zero kinetic energy. All the energy is instead stored as potential energy in the spring.

Explanation:

In the case of a mass oscillating on a vertical spring, the kinetic energy of the object is at a minimum when the object is at its extreme points, i.e., when it is at points 'a' or 'b'. This is because, at these positions, the object momentarily comes to rest before reversing its direction, thereby having a velocity (and hence kinetic energy), which is proportional to the square of the velocity, of zero. The energy at these points is mainly stored in the spring as potential energy.

At these extreme points, we have a situation where the potential energy (U) is maximum and the kinetic energy (K) is equal to zero. At the midpoint position x = 0, the entire energy is kinetic while the potential energy in the spring is zero, which suggests that the kinetic energy is minimum at the extreme positions.

This property of kinetic and potential energy fluctuating between each other is a common characteristic of simple harmonic motion.

Learn more about Kinetic Energy here:

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One kilogram-meter per second squared is also equal to what unit

Answers

metres/second² is acceleration. maybe a bit more clarification?

I don't understand the physics work power and energy unit

Answers


Work and energy are the same thing.  Their unit is the Joule
One joule means the energy it takes to push with a force of 1 newton
through a distance of 1 meter.

The unit of power is the Watt.  That's the rate of work or energy. 
One watt means using 1 joule of energy (for example, push with a force of
1 newton through a distance of 1 meter), and doing that in exactly 1 second.


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