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dalvyx [7]
3 years ago
12

Some windows are made with a single pane of glass. Other windows are made out of two panes that have a tiny pocket of air trappe

d between them. The two diagrams below show how heat flows from a warm room to the outside air though both types of windows.
Considering that convection is driven by differences in temperature, double-pane windows are most likely used to

A.
create a convection current from the inside air to the outside air.
B.
create a convection current from the outside air to the inside air.
C.
decrease the rate of heat flow to the outside air.
D.
increase the rate of heat flow to the outside air.
Physics
2 answers:
Anna [14]3 years ago
7 0

Answer:

If you are coming from study island the real answer is "decrease the rate of heat flow to the outside air."

Explanation:

I just answered it.

Setler [38]3 years ago
6 0

Answer:

If you are coming from study island the real answer is "decrease the rate of heat flow to the outside air."

Explanation:

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A 17.3 eV electron has a 0.295 nm wavelength. If such electrons are passed through a double slit and have their first maximum at
4vir4ik [10]

Answer:

0.541 nm

Explanation:

The condition for maxima is,

dsin\theta=m\lambda

Here, m=0,1,2,.....

And d is the slit separation, m is the order of maxima, \lambda is the wavelength.

Given that, the 17.3 eV electron posses a wavelength of

\lambda=0.295 nm\\\\\lambda=0.295\times 10^{-9}m

And the order of maxima is m=1.

And the angle at which first order maxima occur is,  \theta=33^{\circ}.

Put these values in maxima condition while solving for d.

d=\frac{1\times 0.295\times 10^{-9}m}{sin33^{\circ}} \\d=\frac{0.295\times 10^{-9}m}{0.545} \\d=0.541\times 10^{-9}m}\\d=0.541 nm

Therefore, the slit separation is 0.541 nm.

7 0
3 years ago
The compass uses a pendulous system to improve?
ivanzaharov [21]

The compass is designed and developed to use a pendulous system to improve horizontality.

<h3>What is a compass?</h3>

A compass can be defined as a scientific instrument that contains a magnetized pointer, which is used to show and indicate the following four (4) main cardinal directions:

  • North (N)
  • South (S)
  • West (W)
  • East (E)

Basically, the compass is a scientific instrument that's designed and developed to use a pendulous system to improve horizontality.

Read more on compass here: brainly.com/question/11165627

#SPJ12

6 0
2 years ago
A 0.9 kg metal bolt is heated to an unknown initial temperature. It is then dropped into a Calorimeter containing 0.15 kg of wat
Montano1993 [528]

Answer:

Whets nasılsın merhaba arkadaşlar ben bu etikete yazar nasılsın

8 0
3 years ago
The froghopper Philaenus spumarius is supposedly the best jumper in the animal kingdom. To start a jump, this insect can acceler
Kay [80]

Answer:

Part a)

v_f = 4 m/s

Part b)

t = 0.001 s

Part c)

d = 0.815 m

Explanation:

Part a)

As we know that initially the grass hopper is at rest at the ground position

Now the acceleration is given as

a = 4000 m/s^2

distance of the legs that it stretched is given as

s = 2.0 mm

so we have

v_f^2 - v_i^2 = 2 a d

v_f^2 - 0 = 2(4000)(0.002)

v_f = 4 m/s

Part b)

time taken to reach this speed is given as

v_f - v_i = at

4 - 0 = 4000 t

t = 0.001 s

Part c)

as the grass hopper reach the maximum height its final speed would be zero

so we will have

v_f^2 - v_i^2 = 2 a d

0 - 4^2 = 2(-9.81) d

d = 0.815 m

5 0
3 years ago
A vessel at rest at the origin of an xy coordinate system explodes into three pieces. Just after the explosion, one piece, of ma
andreyandreev [35.5K]

Answer:

Magnitude of the third piece of the vessel after collision is (v√2) m/s

Explanation:

According To Newton's 2nd law, in such a system, momentum is conserved

Momentum before explosion = Momentum after explosion

Total mass of the vessel before explosion = m + m + 3m = 5m

Velocity = (0î + 0j) m/s since it was at rest.

Momentum = 5m (0î + 0j)

Momentum of the first piece after the explosion = m(-vî)

Momentum of the 2nd piece after explosion = m(-vj)

For the momentum of the 3rd piece,

Mass = 3m, let the velocity be (Vₓî + Vᵧj) m/s

Momentum of 3rd piece after collision = 3m (Vₓî + Vᵧj)

Momentum before explosion = Momentum after explosion

5m (0î + 0j) = m(-vî) + m(-vj) + 3m (Vₓî + Vᵧj)

The term m can be factories out,

Grouping the x and y components together,

0î + 0j = (-vî + Vₓî) + (-vj + Vᵧj)

-v + Vₓ = 0, Vₓ = v

-v + Vᵧ = 0, Vᵧ = v

So, the velocity of the 3rd fragment,

(Vₓî + Vᵧj) = (vî + vj) m/s

Magnitude = √(v² + v²) = √(2v²) = v√2 m/s

6 0
3 years ago
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