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kobusy [5.1K]
3 years ago
6

How do buildings keep cool in hot climates​

Physics
1 answer:
Aleksandr [31]3 years ago
6 0

Answer:

buildings are made of stone,bricks or embedded into the ground can feel cooler thanks to the high "thermal mass"of this materials.

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Determine if each object is an insulator or a conductor.
Alborosie

insulators:

ceramic baking dish

winter coat

oven mitt

conductor:

frying pan

radiator

ice chest

7 0
3 years ago
Read 2 more answers
A skier descends a mountain at an angle of 35.0º to the horizontal. If the mountain is 235 m long, what are the horizontal and v
notsponge [240]

d=235m

Alpha=35⁰

h=d×sin(alpha)=134.8m

L=d×cos(alpha)=192.5m

8 0
3 years ago
We would like to place an object 45.0cm in front of a lens and have its image appear on a screen 90.0cm behind the lens. What mu
liubo4ka [24]

Answer:

the radii of curvature is 30 cm.

Explanation:

given,

object is place at = 45 cm

image appears at = 90 cm

focal length = ?

refractive index = 1.5

radii of curvature = ?

\dfrac{1}{f} = \dfrac{1}{u} +\dfrac{1}{v}

\dfrac{1}{f} = \dfrac{1}{45} +\dfrac{1}{90}

f = 30 cm

using lens formula

\dfrac{1}{f} = (n-1)(\dfrac{1}{R_1} -\dfrac{1}{R_2})

R_1 = R\ and\ R_2 = -R

\dfrac{1}{f} = (n-1)(\dfrac{1}{R} +\dfrac{1}{R})

R = (n -1)\ f

R = 2(1.5 -1)\ 30

R = 30 cm

hence, the radii of curvature is 30 cm.

3 0
3 years ago
A scientific hypothesis can be disproved with a.one reproducible experiment. b.disapproval of other scientists. c.many tests by
joja [24]

Answer:

option A

Explanation:

The correct answer is option A

Reproducible experiment is a specific experimentally produced value is said to be reproducible when there is a fair degree of consistency between measurements or observations done by different people at different locations on duplicate specimens — that is, if the test value is determined to be of great accuracy.

hence, a scientific hypothesis can be disproved with one reproducible experiment.

6 0
3 years ago
Work: If the force on an object is in the negative direction, the work it does on the object must be
dimulka [17.4K]

Answer:

The work must be negative or positive depending on direction of motion of the object

Explanation:

This is because

W= force x distance

And = F x S cosစ

And this is positive when

Theta is less than π/2 and negative when theta is less than or equal to π/2

5 0
3 years ago
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