1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
jeka94
3 years ago
6

Why does it takes a long time to heat a room with a high ceiling?

Physics
2 answers:
vlada-n [284]3 years ago
6 0

Answer:

High ceilings make a room feel large and open, but they can be difficult to cool and heat. Because hot air rises, the challenge becomes trying to keep the hot air where you want it and preventing if from being wasted where you don't.

Explanation:

:)

ddd [48]3 years ago
3 0

Answer:High ceilings make a room feel large and open, but they can be difficult to cool and heat. Because hot air rises, the challenge becomes trying to keep the hot air where you want it and preventing if from being wasted where you don't

Explanation:

You might be interested in
Consider an electrical transformer has 10 loops on its primary coil and 20 loops on its secondary coil. What is the voltage in t
Arlecino [84]

Answer:

240 V

Explanation:

number of turns in primary coil, Np = 10

Number of loops in secondary coil, Ns = 20

Voltage in primary coil, Vp = 120 V

Let the voltage in secondary coil is Vs.

So, Vs / Vp = Ns / Np

Vs / 120 = 20 / 10

Vs / 120  = 2

Vs = 240 V

Thus, the voltage in secondary coil is 240 Volt.

4 0
3 years ago
How does energy and temperature affect the density of fluids (liquids and gases)?​
Alex Ar [27]

Answer: When a liquid or gas is heated, the molecules move faster, bump into each other, and spread apart. Because the molecules are spread apart, they take up more space. ... The molecules move more slowly and take up less space. Therefore temperature can affect density.

Explanation:

3 0
3 years ago
Block A of mass M is on a horizontal surface of negligible friction. An identical block B is attached to block A by a light stri
miv72 [106K]

Answer:

T’= 4/3 T  

The new tension is 4/3 = 1.33 of the previous tension the answer e

Explanation:

For this problem let's use Newton's second law applied to each body

Body A

X axis

      T = m_A a

Axis y

     N- W_A = 0

Body B

Vertical axis

     W_B - T = m_B a

In the reference system we have selected the direction to the right as positive, therefore the downward movement is also positive. The acceleration of the two bodies must be the same so that the rope cannot tension

We write the equations

    T = m_A a

    W_B –T = M_B a

We solve this system of equations

     m_B g = (m_A + m_B) a

    a = m_B / (m_A + m_B) g

In this initial case

     m_A = M

     m_B = M

     a = M / (1 + 1) M g

     a = ½ g

Let's find the tension

    T = m_A a

    T = M ½ g

    T = ½ M g

Now we change the mass of the second block

    m_B = 2M

    a = 2M / (1 + 2) M g

    a = 2/3 g

We seek tension for this case

    T’= m_A a

    T’= M 2/3 g

   

Let's look for the relationship between the tensions of the two cases

   T’/ T = 2/3 M g / (½ M g)

   T’/ T = 4/3

   T’= 4/3 T

The new tension is 4/3 = 1.33 of the previous tension the answer  e

4 0
3 years ago
Is this a boy or a girl
ivanzaharov [21]

I believe that it is a boy but if they would like to be classified as a girl or a boy their decision needs to be respected

3 0
3 years ago
What is an athlete’s momentum if the athlete has a velocity of 7.5 m/s and has a mass of 70kg?
Bezzdna [24]

Answer:

525 kg.m/s

Explanation:

★ Momentum = Mass× Velocity

→ P = (7.5 × 70) kg.m/s

→ P = (75 × 7) kg.m/s

→ <u>P</u><u> </u><u>=</u><u> </u><u>5</u><u>2</u><u>5</u><u> </u><u>kg</u><u>.</u><u>m</u><u>/</u><u>s</u>

8 0
2 years ago
Other questions:
  • A pen rolls off a 0.55–meter high table with an initial horizontal velocity of 1.2 meters/second. At what horizontal distance fr
    5·1 answer
  • Suppose you are riding your bike along a path that is also used by in-line skaters. You pass a skater, and another biker passes
    13·1 answer
  • A roofing shingle elevator is lifting a 30.0-kg package to the top of a building at constant speed. The angle between the elevat
    10·1 answer
  • A concave mirror has a radius of curvature of 10 cm. Find the location an height of the image if the distance of the object is 8
    10·1 answer
  • Look at the divisions between 2 and 4. What level of precision does this stopwatch have based on the divisions marked on its fac
    8·1 answer
  • NEED ANSWER FAST!!! Worth 15 points
    14·2 answers
  • Unit 2 Lesson 9: Temperature &amp; Heat Unit Test does anyone have the answers
    15·2 answers
  • Calculate the current flowing if a charge of 36 kilocoulombs flows in 1 hour.
    12·2 answers
  • PLEASE HELP NEED ANSWER NOW!!!
    15·1 answer
  • A skater is spinning with his arms outstretched. He has a 2 lb weight in each hand. In an attempt to change his angular velocity
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!