All categories

3 years ago

How does vacuum reduce thermal energy transfer

Physics

2 answers:

Evgesh-ka [11]3 years ago

4 0

Answer:

Less air pressure.

Explanation:

Thermal energy travels in many different ways and one of those ways is through the air so if there's less air, it would reduce thermal energy transfer.

FrozenT [24]3 years ago

3 0

The silver coating on the inner bottle prevents heat transfer by radiation, and the vacuum between its double wall prevents heat moving by convection. The thinness of the glass walls stops heat entering or leaving the flask by conduction.

You might be interested in

If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance, how

taurus [48]

T=2s
g=10m/s2
h=?
free fall: h=gt2/2
              h= 10*4/2
               h=40/2
              h=20m

3 0

3 years ago

The unit of electric potential or electromotive force is the

Natalka [10]

That would be called VOLT

4 0

3 years ago

A jogger hears a car alarm and decides to investigate. While running toward the car, she hears an alarm frequency of 872.10 Hz.

Nata [24]

Answer:

v = 4.18 m/s

Explanation:

given,

frequency of the alarm = 872.10 Hz

after passing car frequency she hear = 851.10 Hz

Speed of sound = 343 m/s

speed of the jogger = ?

speed of the

$v_f = \dfrac{872.10-851.10}{2}$

$v_f =10.5\ Hz$

v_o = 872.1 - 10.5

$V_0 = 861.6\ Hz$

The speed of jogger

$v = \dfrac{v_1 \times 343}{v_0}-343$

$v = \dfrac{872.1 \times 343}{861.6}-343$

v = 4.18 m/s

5 0

2 years ago

Consider the table below. Which of the following data sets depict an accelerating object? Mark all that apply.

Gre4nikov [31]

Answer:

A and B

Explanation:

The data sets that depict an accelerating object is Data Set A & Data Set B.

The both data sets show that the body is accelerating. Also, they show that the body started from rest (0m/s) at a 0sec.

Data Set A shows a non-constant acceleration which has changing amount of velocity with change in time. While Data Set B shows a constant acceleration which has constant amount of velocity with change in time.

7 0

3 years ago

Darwin’s explanation for why different species exist is best described as a (n)

rodikova [14]

<span>a change in allele frequencies in a population over time also known as evolution</span>

3 0

3 years ago

Read 2 more answers