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Maru [420]
3 years ago
7

How the energy is transformed

Physics
2 answers:
ANTONII [103]3 years ago
6 0

Answer:

motion energy to sound energy

Explanation:

you move your hands together, then clap then, which makes a sound. Hope that this helps you and have a great day :)

Whitepunk [10]3 years ago
5 0
Motion to sound energy
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A 1.83 kg book is placed on a flat desk. Suppose the coefficient of static friction between the book and the desk is 0.442 and t
fredd [130]

Answer:7.92 N

Explanation:

Given

mass of book m=1.83\ kg

coefficient of static friction \mu _s=0.442

coefficient of kinetic friction \mu _k=0.240

To move the book, one need to overcome  the static friction  

Static friction F_s=\mu _sN

F_s=\mu _s\times 1.83\times 9.8

F_s=0.442\times 1.83\times 9.8

F_s=7.92\ N

After overcoming the Static friction , Force needed to move the block is

F_k=\mu _kN

F_k=0.240\times 1.83\times 9.8

F_k=4.30\ N

8 0
3 years ago
For a certain ideal Carnot engine, the hot reservoir is 35°C higher than the cold reservoir. If this engine is to have an effici
lord [1]

Answer:

Temperature of the hot reservoir is 1540K

Explanation:

E= 1- \frac{T_{c}}[tex]{T_h}=308+{T_c}\\Efficiency of a carnot engine is given by the aboveTc=temperature of the cold reservoirTh= temperature of the hot reservoirK=273+ 35  (convert  35°C to kelvin)K=308k{T_h}={T_c}+308-----------------------(equation  1)20%=1-{T_c}/{T_h}

0.2=({T_c}+308-{T_c})/{T_c}+308

.2({T_c}+61.6=308

0.2{T_c}=246.4

{T_c}=1232

recall from equation 1

{T_h}=308+1232

{T_h}=1540K

5 0
3 years ago
What are the strengths and weaknesses of the four methods of waste management?<br>​
Nitella [24]

Answer & Explanation: Waste management are all activities and actions required to manage waste from its inception to its final disposal. There are several methods of managing waste with its strengths and weaknesses. The strengths include;

* It creates employment

* It keeps the environment clean

* The practice is highly lucrative

* It saves the earth and conserves energy

The weaknesses of the methods of waste management includes;

* The sites are often dangerous

* The process is mostly

* There is a need for global buy-in

* The resultant product had a short life

4 0
4 years ago
The wearing down of rocks over time
RoseWind [281]
Weathering is the breaking down of rocks in a process. Deforestation is the removing of land, trees, forests for a non-forest use. Circulation is a movement that's in a cycle. Calcium carbonate is a supplement when the body lacks calcium.
Your correct answer is C.) Weathering
I hope this helps!
5 0
3 years ago
A volleyball is knocked from rest to a velocity of 22 m/s over a time of 0.2
notsponge [240]

Answer:

\boxed {\boxed {\sf 55 \ Newtons}}

Explanation:

We are asked to find the force applied to the volleyball. According to Newton's Second Law of Motion, force is the product of mass and acceleration.

F=ma

We are given the mass, but we must calculate the acceleration.

1. Acceleration

Acceleration is the rate of change of velocity with respect to change. It is the change in velocity over the time.

a= \frac{v_f-v_i}{t}

The volleyball starts at rest or 0 meters per second and reaches a velocity of 22 meters per second in 0.2 seconds.

  • v_f= 22 m/s
  • v_i= 0 m/s
  • t= 0.2 s

Substitute the values into the formula.

a= \frac{ 22 \ m/s - 0 \ m/s}{0.2 \ s}

Solve the numerator.

a= \frac{22 \ m/s}{0.2 \ s}

Divide.

a= 110 \ m/s^2

2. Force

Now we know the mass and acceleration, so we can calculate the force.

F=ma

The mass is 0.5 kilograms and the acceleration is 110 meters per second squared.

  • m= 0.5 kg
  • a=110 m/s²

Substitute the values into the formula.

F= 0.5 \ kg * 110 \ m/s^2

Multiply.

F= 55 kg*m/s^2

1 kilogram meter per second squared is equal to 1 Newton, so our answer of 55 kg*m/s² is equal to 55 Newtons.

F= 55 \ N

<u>55 Newtons</u> of force are applied to the volleyball.

3 0
3 years ago
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