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3 years ago

What happens to the energy "lost" by a machine?

2 answers:

3 0

I would say A, although it depends on what kind of machine. If it does not recycle, then most likely C. I would be able to give more context based on what kind of machine it is.

bezimeni [28]3 years ago

3 0

The answer would be:

C: It goes into the environment

lose energy from a machine turns into heat.

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at the instant a traffic light turns green, a car that has been waiting at the intersection starts ahead with a constant acceler

yKpoI14uk [10]

a) time, t = 11.407 s, b) distance x = 175.66 m, v = c) speed v = 30.80 m / s

<h3>Explanation of question:</h3>

a) This is kinematics exercise, write the equation of each vehicle car is;-

x = x₀ + v₀ t + ½ a t²

Let's fix our the reference system at a point where the car indicate that the car stops from rest is vo = 0.

x₀ = v₀ = 0

<h3>we substitute</h3>

x = ½ a t²

truck

x₂= v₀ t

v₀ = 15.4 m / s

At the point where they are, positions are equal:-

½ a t² = vo t

t = 2 vo / a

calculate us

t = 2 15.4 / 2.

t = 11.407 s

b) the distance to reach it

x = ½ to t²

x = ½ 20 11.407²

x = 175.66 m

c) the speed of the car is

v = vo + a t

vo = 0

v = at

v = 2.0 11.407

v = 30.80 m / s

To know more about acceleration visit:-

brainly.com/question/12550364

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7 0

1 year ago

A mass of 0.54 kg attached to a vertical spring stretches the spring 36 cm from its original equilibrium position. The accelerat

UNO [17]

<h2>Spring constant is 14.72 N/m</h2>

Explanation:

We have for a spring

Force = Spring constant x Elongation

F = kx

Here force is weight of mass

F = W = mg = 0.54 x 9.81 = 5.3 N

Elongation, x = 36 cm = 0.36 m

Substituting

F = kx

5.3 = k x 0.36

k = 14.72 N/m

Spring constant is 14.72 N/m

6 0

3 years ago

What is chemical

Marat540 [252]

Answer:

Explanation:

chemical energy is the energy stored in the bonds between atoms and molecules.

5 0

3 years ago

Your teacher wants you to perform an experiment that will demonstrate a chemical property. Which experiment should you choose? A

Dovator [93]

A) Measure the pH of different household chemicals

Explanation:

To demonstrate a chemical property using an experiment, measuring the pH of different household chemicals will be the best way. The pH is the degree of hydrogen or hydroxyl ion concentration in a solution.

Chemical properties tell us about what a substance can do.
It shows if a substance will react with other substances or not.
Examples are flammability, rusting of iron, precipitation, decomposition of water by electric current e.t.c.
Measuring the pH is a chemical property determination procedure.
The pH points to the degree of acidity or alkalinity of a solution.

Learn more:

Chemical change brainly.com/question/9388643

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4 0

3 years ago

Read 2 more answers

A 2 C charge and a 4 C charge attract each other with 10 N of force How much will a 2C charge and a 8 C charge attract each othe

densk [106]

Answer: 20N

Explanation:

5 0

2 years ago