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lora16 [44]
4 years ago
13

Momentum is usually not exactly conserved in a real world demonstration of momentum conservation. What is a possible reason for

this fact?
Physics
1 answer:
Maksim231197 [3]4 years ago
5 0

Answer:

For any collision occurring in an isolated system, momentum is conserved. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.

Explanation:

Hope this helps

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The image produced by a convex mirror is always closer to the mirror than it would be in a plane mirror for the same object dist
rosijanka [135]

Answer:

True

Explanation:

The image produced a convex mirror is always virtual irrespective of location. The size of the image is always smaller than the object. In a plane mirror the distance of the object and the distance of the image is same. But in a convex the image distance is always less than the object distance.

So, this statement is true.

6 0
4 years ago
Three bullets are fired simultaneously by three guns aimed toward the center of a circle where they mash into a stationary lump.
Effectus [21]

Answer:2.32\times 10^{-3} kg

Explanation:

Given

mass of first and second bullet m_1=m_2=3.90\times 10^{-3} kg

Velocity of two bullets v_1=v_2=368 m/s

velocity of third bullet v_3=618 m/s

angles between guns is 120^{\circ}

Suppose First gun is at 0^{\circ} and second is at 120^{\circ} and third is at 240^{\circ}

therefore

conserving momentum in x-direction

m_1v_1\cos 0+m_2v_2\cos 120+m_3v_3\cos 240=0

as three bullets club together to become lump

3.90\times 10^{-3}\times 368+3.90\times 10^{-3}\times 368\times \cos (120)+m_3\times 618\times \cos (240)=0

3.90\times 10^{-3}\times 368+3.90\times 10^{-3}\times 368\times (-0.5)+m_3\times 618\times (-0.5)=0

0.5\times 3.90\times 10^{-3}\times 368=m_3\times 618\times 0.5

m_3=3.90\times 10^{-3}\times \frac{368}{618} kg

m_3=2.32\times 10^{-3} kg

5 0
4 years ago
A merry-go-round a.k.a "the spinny thing" is rotating at 15 RPM, and has a radius of 1.75 m
arlik [135]

Answer:

A.) 4 revolution

B.) 0.2 revolution

C.) 4 seconds

D.) 2.75 m/s

Explanation:

Given that a merry-go-round a.k.a "the spinny thing" is rotating at 15 RPM, and has a radius of 1.75 m

Solution

1 revolution = 2πr

Where r = 1.75m

A. How many revolutions will it make in 3 minutes?

(2π × 1.75) / 3

10.9955 / 3

3.665 RPM

Number of revolution = 15 / 3.665

Number of revolution = 4 revolution

B. How many revolutions will it make in 10.0 seconds?

First convert 10 seconds to minutes

10/60 = 0.167 minute

(2π × 1.75) / 0.167

10.9955 / 0.167

65.973

Number of revolution = 15 / 65.973

Number of revolution = 0.2 revolution

C. How long does it take for a person to make 1 complete revolution?

15 = 1 / t

Make t the subject of formula

t = 1/15

t = 0.0667 minute

t = 4 seconds

D. What is the velocity in m/s of person standing on its edge?

Velocity in m/ s will be:

Velocity = (15 × 2pi × r) / 60

Velocity = 164.9334 / 60

Velocity = 2.75 m/s

8 0
3 years ago
If aluminum loses all 3 electrons how do you write the ion
Kruka [31]
It will be then a positive ion and will be written as,
Al^3+
5 0
4 years ago
Rocks that are formed as a result of deposits from weathering and erosion
zimovet [89]
<h2>Answer: Sedimentary rocks </h2>

Sedimentary rocks are formed from sediments and deposits of particles of various types, forms and sizes that are transported by air, wind or water, and then subjected to chemical processes to become rocks.

These types of rocks are usually found in the form of layers or strata in places where sediment accumulates due to the erosion of other materials, for example on the banks of rivers, in valleys, lakes (and any other type of body of water).

8 0
3 years ago
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