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dusya [7]
3 years ago
7

What material reduces thermal energy

Physics
1 answer:
expeople1 [14]3 years ago
3 0

Answer:

Insulation helps to prevent that transfer of heat.

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Javier wants to improve his flexibility and increase his personal discipline. Which community resource should he select?
Dovator [93]
Karate class, kicking high and ducking fast makes you much more flexible and you must pay respects to those ou fight with and be intune with yourself to do it right, in other words karate is the answer.
7 0
3 years ago
A 4.8-kg block attached to a spring executes simple harmonic motion on a frictionless horizontal surface. At time t=0 s, the blo
garri49 [273]

Answer:

E) 80 N/m

Explanation:

Given;

mass of the block, m = 4.8 kg

displacement of the block, x = -0.5 m

velocity of the block, v = -0.8 m/s

acceleration of the block, a = 8.3 m/s²

From Newton's second law of motion;

F = ma

Also, from Hook's law;

F = -Kx

where;

k is the force constant

Thus, ma = -kx

k = -ma/x

k = -(4.8 x 8.3) / (-0.5)

k = 79.7 N/m

k ≅ 80 N/m

Therefore, the force constant of the spring is closest to 80 N/m

4 0
3 years ago
The cerebral cortex is divided into two halves called cerebral hemispheres. Please select the best answer from the choices provi
Ymorist [56]

The cerebral cortex is divided into two halves called cerebral hemispheres.

<h2><u><em>                                      True                                       </em></u></h2>

                                                    is your answer :)

6 0
3 years ago
Read 2 more answers
Is it possible to do work on an object without changing the kinetic energy of the object? Now Why?
Murrr4er [49]

Answer:

(a) Yes, it is possible by raising the object to a greater height without acceleration.

Explanation:

The work-energy theorem states that work done on an object is equal to the change in kinetic energy, and change in  kinetic energy requires a change in velocity.

If kinetic energy will not change, then velocity will not change, this means that there will be constant velocity and an object with a constant velocity is not accelerating.

If the object is not accelerating (without acceleration) and it remains at the same height (change in height = 0, and mgh = 0).

Thus, for work to be done on the object, without changing the kinetic energy of the object, the object must be raised  to a greater height without acceleration.

Correct option is " (a) Yes, it is possible by raising the object to a greater height without acceleration".

8 0
3 years ago
Place where warm air rises and pushes down on the earths surface with less pressure
BartSMP [9]
 A high pressure area
3 0
3 years ago
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