PHYSICS HIGH SCHOOL

Why do we insulate houses?A. To prevent heat transfer from inside to
the outside
B. To allow energy to flow from inside to
the outside
C. To keep them cool in the winter and
warm in the summer

Answers

Answer 1
Answer: B to allow energy to flow from inside to the outside

Related Questions

As a car moves along the road, the distance traveled each second is measured and recorded. What is thedependent variable? Which axis of a line graph does it normally go on? What is the independent variable inthis set of data? Which axis of a line graph does it normally go on?
Which of the following is not a possible effect of rising carbon dioxide levels on plants?
What is the correct formula for work?a. Work = force / time b. Work = force * distance c. Work = force / distance d. Work = mass * acceleration
Which of the following absorbs the MOST heat energy?a. red objects b. white objects c. black objects d. purple object
Study this equation carefully. What classification should this reaction have? Cu + 2AgNO3 Cu(NO3)2 + 2Ag synthesis decomposition single replacement double displacement neutralization

A trombone has a variable length. When a musician blows into the mouthpiece and causes air in the tube of the horn to vibrate, the waves set up by the vibrations reflect back and forth in the horn to create standing waves. As the length of horn is made shorter, what happens to the frequency?A) The frequency will increase or decrease depending on how hard the horn player blows.
B) The frequency will increase
C) The frequency will decrease
D) The frequency will increase or decrease depending on the diameter of the horn.
E) The frequency will remain same

Answers

Answer:

B) The frequency will increase

Explanation:

The length of the instrument is given by

L=(\lambda)/(2)\n\Rightarrow \lambda=2L

Wavelength is given by

\lambda=(v)/(f)

(v)/(f)=2L\ or\ L\propto (1)/(f)

It can be seen that the length is inversely proportional to the frequency.

Here, the length of the trombone is decreasing so the frequency will increase.

A water wave has a frequency of 2 HZ and a wavelength of 5 meters what is its speed

Answers

Speed, v = fλ.

Where f is the frequency in Hertz, wavelength is in meters.

Speed, v = 2*5 = 10

Speed = 10 m/s. 

What is a quantity Described completely by its magnitude

Answers

Answer:

Scalar

Explanation:

A physical quantity that is completely described by its magnitude; examples of scalars are volume, density, speed, energy, mass, and time. Other quantities, such as force and velocity, have both magnitude and direction and are called vectors.

As we move above up from one trophic level to another in an energy pyramid, what happens to the energy?a. It decreases from one trophic level to another.
b. It remains the same for each trophic level.
c. It increases from one trophic level to another.

Answers

As we move above up from one trophic level to another in an energy pyramid, what happens to the energy?

a. It decreases from one trophic level to another.
b. It remains the same for each trophic level.
c. It increases from one trophic level to another.

As we move above up from one trophic level to another in an energy pyramid, the energy level decreases from one trophic level to another. The answer is letter A.

A skier is skiing down a slope on the mountain. Is the mechanical energy conserved? Why or why not?

Answers

yes, because mechanical energy is your total amount of energy when you add Potential and Kinetic energy together

In an elements square on the periodic table the number with the number greatest value represent the

Answers

The atomic mass is the greatest number but it depends on the element for the number
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A bus is traveling at 79.7 kilometers per hour east. How far does the bus travel in 1.45 hours?
Two vertical springs have identical spring constants, but one has a ball of mass m hanging from it and the other has a ball of mass 2m hanging from it. Part A If the energies of the two systems are the same, what is the ratio of the oscillation amplitudes?
What is the resistance of an ideal ammeter voltmeter ?
If you are over-driving your headlights and you see an object ahead, you will_____. be given the right-of-way from other vehicles not be able to stop in time to miss the object need to execute a high-speed U-turn be able to stop, but may graze the object.