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poizon [28]
2 years ago
7

When an object absorbs heat, it results to increase in object’s internal energy. This increase will make kinetic energy to incre

ase, therefore the temperature will also increase. Molecules move faster and faster causing the object to expand (also known as thermal expansion)How is this concept applied in loosely hung electric transmission cable wire?
a. There is more than enough budget for the cable wires
b. Tightly hung electric cable wires may snap or break due to exposure to heat
c. It is designed as provision for many users
d. It is what the law requires​​
Physics
1 answer:
andrew-mc [135]2 years ago
4 0
I think the answer is d it is what the law requires
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It moves to 56 km per hours
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7. Which quantity is the transfer of energy?<br> force<br> motion<br> work
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In this exercise we have to know the definition of energy to understand what is transferred to a body, like this:

Work

<h2>What is energy?</h2>

Despite being used in many different contexts, the scientific use of the word energy has a well-defined and precise meaning: Innate potential to perform work or perform an action. Anything that is working, moving another object, or heating it up, for example, is expending (transferring) energy.

With this definition we can say that the only alternative that responds to this is work.

See more about energy at brainly.com/question/1932868

6 0
2 years ago
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the law of reflection states that the angle of incidence is equal to the angle of reflection. true or false.
mina [271]
Yes it is absolutely true!
7 0
3 years ago
Learning Goal: To practice Problem-Solving Strategy 15.1 Mechanical Waves. Waves on a string are described by the following gene
kaheart [24]

Answer:

so the transverse displacement is  0.089963 m

Explanation:

Given data

equation y(x,t)=Acos(kx−ωt)

speed  v = 9.00 m/s

amplitude A = 9.00 × 10^−2 m

wavelength λ   = 0.480 m

to find out

the transverse displacement

solution

we know

v = angular frequency / wave number

and

wave number = 2 \pi / λ  =  2 \pi / 0.480  = 13.0899 m^{-2}

angular frequency = v k

angular frequency = 9.00 × 13.0899

angular frequency = 117.8097 rad/sec = 118 rad/sec

so

equation y(x,t)=Acos(kx−ωt)

y(x,t)=9.00 × 10^−2 cos(13.0899 x−118t)

when x =0 and and t = 0

maximum y(x,t)= 9.00 × 10^−2 cos(13.0899 (0) − 118 (0))

maximum y(x,t)= 9.00 × 10^−2  m

and when x =  x = 1.59 m and t = 0.150 s

y(x,t)=9.00 × 10^−2 cos(13.0899 (1.59) −118(0.150) )

y(x,t)=9.00 × 10^−2 × (0.99959)

y(x,t) = 0.089963 m

so the transverse displacement is  0.089963 m

5 0
3 years ago
A crane lifts a car with 9023 J of kinetic energy. The crane lifts the car with a speed
lapo4ka [179]

Answer:

m = 2301.8 [kg]

Explanation:

This problem can be solved in an easy way using the definition of kinetic energy, in this way you can clear the mass, depending on the known variables.

E_{k}=0.5*m*v^2\\replacing\\\\9023 = 0.5 *m*(2.8)^2\\m = 2301.8[kg]

4 0
2 years ago
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