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4 years ago

The weakest of the four fundamental forces is the

Physics

2 answers:

UkoKoshka [18]4 years ago

8 0

The weakest of the four fundamental forces is the gravitational force.

Answer: Option D

Explanation:

The four basic forces are responsible for all kind of interaction in the universe: The gravitational force, electromagnetic force, strong nuclear and the weak nuclear force. Where the electromagnetic force has been given the strength value of 1, the gravitational force ranged from 10 to -40.

Comparing to other 3 fundamental forces, gravity draws the weakest impact on the object and acts the strongest in the absence of other forces. When we place a small magnet near to an iron nail, it gets attracted towards the magnet in a second, leaving the influence of gravity. This is just a single example, there are huge number of examples to prove the worth of this statement.

Hoochie [10]4 years ago

5 0

Answer:

the answer is weak force

hope this helps u stay safe

Explanation:

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Is there gravity in space? If so name one piece of evidence

Eddi Din [679]

There is gravity everywhere in space. In fact, it's how the moon orbits the Earth. Also, gravity in space assists the Earth to orbit the sun. These are caused by small areas of gravity. The term for this is called "microgravity".

I hope this helps!

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4 years ago

What is the force of an object in free fall

aleksklad [387]

The force of gravity (mg) is the force of an object in free fall.

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4 years ago

Read 2 more answers

A car travels 70 km in two hours 104 km in the next 1.5 hours and then 79 km in two hours before reaching its destination what w

stiks02 [169]

Average speed = (total distance) / (total time)

Total distance = (70km + 104km + 79km) = 253 km

Total time = (2hr + 1.5hr + 2hr) = 5.5 hrs

Average speed = (253 km) / (5.5 hrs)

Average speed = 46 km/hr

4 0

4 years ago

A 4 kg block is launched up a 30° ramp with an initial speed of 5 m/s. The coefficient of kinetic friction between the block and

zlopas [31]

Answer:

The speed of the block when it has returned to the bottom of the ramp is 6.56 m/s.

Explanation:

Given;

mass of block, m = 4 kg

coefficient of kinetic friction, μk = 0.25

angle of inclination, θ = 30°

initial speed of the block, u = 5 m/s

From Newton's second law of motion;

F = ma

a = F/m

Net horizontal force;

∑F = mgsinθ + μkmgcosθ

$a = \frac{F_{NET}}{m} = \frac{mgsin \theta + \mu_kmgcos \theta}{m} \\\\a = gsin \theta + \mu_kgcos \theta\\\\a = 9.8sin (30) + 0.25*9.8cos(30)\\\\a = 4.9 + 2.1217\\\\a = 7.022 \ m/s^2$

At the top of the ramp, energy is conserved;

Kinetic energy = potential energy

¹/₂mv² = mgh

¹/₂ v² = gh

¹/₂ x 5² = 9.8h

12.5 = 9.8h

h = 12.5/9.8

h = 1.28 m

Height of the ramp is 1.28 m

Now, calculate the speed of the block (in m/s) when it has returned to the bottom of the ramp;

v² = u² + 2ah

v² = 5² + 2 x 7.022 x 1.28

v² = 25 + 17.976

v² = 42.976

v = √42.976

v = 6.56 m/s

Therefore, the speed of the block when it has returned to the bottom of the ramp is 6.56 m/s.

4 0

4 years ago

In Greek philosophy, the gods were there to be helpful to humans. A. True B. False

ollegr [7]

Answer:

True, people would actually pray to Poseidon for safe sea travel

3 0

3 years ago