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Liula [17]
3 years ago
15

An old clock has a spring that must be wound to make the clock hands move. Which statement describes the energy of the spring an

d hands of the clock?
A)
The spring has kinetic energy and the hands have kinetic energy.


B)
The spring has kinetic energy and the hands have potential energy.


C)
The spring has potential energy and the hands have potential energy.


D)
The spring has potential energy and the hands have kinetic energy.
Physics
1 answer:
topjm [15]3 years ago
8 0

Answer:

c

Explanation:

neither the spring or hands are in the action of movemnet

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What practical function is provided by the ionosphere? Produces auroras charges atoms heats oxygen and nitrogen permits worldwid
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Answer:

Worldwide Radio Communication

Explanation:

The ionosphere is important because it is through the ionosphere that world wide radio communication is possible.

6 0
3 years ago
An ordinary flashlight battery has a potential difference of 1.2 V between its positive and negative terminals. How much work mu
Maru [420]

The work done to transport an electron from the positive to the negative terminal is 1.92×10⁻¹⁹ J.

Given:

Potential difference, V = 1.2 V

Charge on an electron, e = 1.6 × 10⁻¹⁹ C

Calculation:

We know that the work done to transport an electron from the positive to the negative terminal is given as:

W.D = (Charge on electron)×(Potential difference)

       = e × V

       = (1.6 × 10⁻¹⁹ C)×(1.2 V)

       = 1.92 × 10⁻¹⁹ J

Therefore, the work done in bringing the charge from the positive terminal to the negative terminal is 1.92 × 10⁻¹⁹ J.

Learn more about work done on a charge here:

<u>brainly.com/question/13946889</u>

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4 0
2 years ago
Describe the energy transfer when you touch a block of ice with your hand
nydimaria [60]

Answer:

Thermal energy always flows from the warmer object to the colder object. This causes your hand to get cold, while the ice absorbs your heat and melts.

8 0
3 years ago
Read 2 more answers
The reactants for a certain chemical reaction are shown. Cu(NO3)2 + NaOH → Which of the following shows the correct product or p
valentinak56 [21]

Answer : The products of this reaction are, Cu(OH)_2 and NaNO_3

Explanation :

First we have to write the balanced chemical reaction.

Cu(NO_3)_2+2NaOH\rightarrow Cu(OH)_2+2NaNO_3

In this reaction, 1 mole of copper nitrate react with the 2 moles of sodium hydroxide to give 1 mole of copper hydroxide and 2 moles of sodium nitrate.

This reaction is a double displacement reaction.

Double displacement reaction : A type of reaction in which a positive cation and a negative anion of two reactants react to exchange their places to form two new products.

The general representation of this reaction is,

XY+AB\rightarrow XB+AY

(X and A are the cations, Y and B are the anions)

Hence, the products of this reaction are, copper hydroxide,Cu(OH)_2 and sodium nitrate,NaNO_3

6 0
3 years ago
A mass of 10kg is a point a on a table is moved to a point B.if the line joining A and is horizantal what is the done on the obj
IrinaK [193]

Answer:

work done on the object by gravitational force = 0 joules

Explanation:

work = force × displacement

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so,

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and displacement= 0 m since the object is not moving vertically.

so,

work = 10 × 9.8 × 0 = 0 joules

6 0
2 years ago
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