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Ludmilka [50]
4 years ago
11

What does the release or absorption of energy indicate?

Physics
1 answer:
stich3 [128]4 years ago
5 0

Answer:

The release or absorption of energy indicates a chemical change.

Explanation:

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An object is dropped at a height of 6 m from the ground. How fast is it moving just before it hits the ground?
maw [93]

Explanation:

Given:

Δy = 6 m

v₀ = 0 m/s

a = 9.8 m/s²

Find: v

v² = v₀² + 2aΔy

v² = (0 m/s)² + 2 (9.8 m/s²) (6 m)

v ≈ 10.8 m/s

Round as needed.

3 0
3 years ago
When a machine is used to do work, the force applied by the machine is called the effort force?
nignag [31]
Y e s  i t ' s   c a l l e d  "  t h e   e f f o r t   f o r c e  " 

H o p e  t h i s  h e l p s

:) L O L 
8 0
3 years ago
What laws of motion are demonstrated by a hammer pounding a nail into a board?
julia-pushkina [17]
A hammer pounding a nail into a board is an example of Newton’s Third law.

Newton’s third law states that for every action there is an equal and opposite reaction. Meaning, when you hit the hammer on the board the same amount of energy that is going into the board, is going into the hammer. Causing the hammer to bounce off the board.

Hope this helps!
6 0
3 years ago
Care din propozitiile de mai jos sunt propozitii simple si care sunt propozitii dezvoltate? Argumentati oral raspunsurile a) mâț
Nataliya [291]

Answer:

a) developed

b) simple

c) simple

d) developed

e) developed

f) developed

Question:

Which of the following sentences are simple sentences and which are developed sentences? Orally argue the answers

a) the cat scribbled the little girl.

b) Grandma will cook

c) The cat will spin

d) You don't love cats?

e) in one jump, the cat will be at the window

f) we will never arrived on time

Explanation:

To differentiate the simple sentences from the developed sentences, let's understand what they are.

A Simple sentence is a sentence that contain a subject and a predicate. The sentence is complete in thought.

A developed sentence is a sentence that contain a subject, predicate as well as other parts of sentence.

a) the cat scribbled the little girl (developed)

b) Grandma will cook (simple)

c) The cat will spin (simple)

d) You don't love cats? (developed)

e) in one jump, the cat will be at the window (developed)

f) we will never arrived on time (developed)

Hence option b and c are simple sentences, while options a, d, e and f are developed.

6 0
3 years ago
in which situation is no work being done A person carrying a box from one place to another a person picking up a box from the gr
monitta

A person picking up a box from the ground

Explanation:

Work is defined as measure of energy transfer that occurs when an object is moved from one place to another by an external force at least part of which is applied in the direction of the displacement. Basically, work implies activity whether an activity done by body, of mind, of a machine, or of a natural force. In picking up a box from the ground there is no movement of person from one palce to another, hence no work done by him. Work is done only when he picks the box and moves from one point to another while carrying it.

6 0
3 years ago
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