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Mazyrski [523]
3 years ago
13

Matter and energy can convert into each other. True False

Physics
2 answers:
Valentin [98]3 years ago
8 0

the answer is True you can convert matter and energy

Tanzania [10]3 years ago
5 0

<h2>TRUE!!!!!!! </h2><h2>HOPE THIS HELPS YOU!</h2>

<h2></h2>
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What are the three types of motion
Cloud [144]
Rectilinear Motion, Circular Motion and Periodic Motion.
7 0
3 years ago
A uniform disk of mass m = 2.4 kg and radius R = 25 cm can rotate about an axle through its center. Four forces are acting on it
Zinaida [17]

Answer:

0 Nm

Explanation:

Torque is the cross product of the radius vector and the force vector.

τ = r × F

In other words, the magnitude of the torque is equal to the magnitude of the radius times the magnitude of the force times the sine of the angle between them.

τ = rF sin θ

Since F₃ is parallel to the radius vector, θ = 0, so τ = 0.

6 0
3 years ago
Which element is located in period 3 of the periodic table?
liberstina [14]

Answer:

From the given options, the option (D) is correct. Because Al is the aluminium which is located in period 3 of the periodic table.

Explanation:

We know that the 3rd period contains 8 elements which are as follows:

  1. sodium
  2. magnesium
  3. aluminium
  4. silicon
  5. phosphorus
  6. sulfur
  7. chlorine, and
  8. argon

The sodium and magnesium, the first 2 elements, are members of the s-block of the periodic table, while the rest of the members are the elements of the p-block.

Thus, from the given options, the option (D) is correct. Because Al is the aluminium which is located in period 3 of the periodic table.

3 0
3 years ago
Imagine you have a collection of identical flat-bottomed coffee filters that can be nested (stacked inside of each other) so tha
skad [1K]

Answer:

the terminal velocity of 14 nested coffee filters is 3.2 m/s

Explanation:

Given the data in the question;

we know that;

The terminal velocity is proportional to the square root of weight.

v ∝ √W

v = k√W

the proportionality constant depends upon the surface area and the density of the medium (like air). The coffee filters can be stacked such that the resulting area is roughly unchanged. So, the constant of proportionality k is also unchanged

v/√W = constant

v₂/√W₂ = v₁/√W₁

v₂ = v₁√(W₂ / W₁ )

given that;

v₁ = 0.856 m/s,

W₂ = 14W₁; meaning 14 coffee filters have 14 times the weight of a single coffee filter

so we substitute

v₂ = 0.856 √(14W₁  / W₁ )

v₂  = 0.856 √( 14( W₁/W₁)

v₂  = 0.856 √( 14(1)

v₂  = 0.856 √( 14 )

v₂  = 0.856 × 3.741657

v₂  = 3.2 m/s

Therefore, the terminal velocity of 14 nested coffee filters is 3.2 m/s

6 0
3 years ago
Question 9
egoroff_w [7]

Answer:

C

Explanation:

F=ma

given solution

v=12m/s a=v/t

s=6 sec =12m/s÷6sec

=2m/s^2 then we get acceleration now we will find the mass. first derive the the formula of mass by crisis cross then you will get this formula which is m=F/a

=36÷2

= 18

6 0
3 years ago
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