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4 years ago

9

you can feel the heat waves from small electric heater on your hands and face even though the heater is on the other side of the

room this is an example of

1 answer:

enyata [817]4 years ago

3 0

Radiation
hope this helps

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What are the characteristics of open pit mining

Ostrovityanka [42]

Answer:

The dominant feature in an open pit or quarry operation is the pit, a broad, deepened, often funnel-shaped area where overburden has been removed to access the material to be mined. This is where material extraction takes place.

Explanation:

<em>Read </em><em>my </em><em>bio </em><em>:</em><em>)</em>

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3 years ago

Emily holds a banana of mass m over the edge of a bridge of height h. She drops the banana and it falls to the river below. Use

Sladkaya [172]

Answer:

The speed of the banana just before it hits the water is:

√(2 · g · h) = v

Explanation:

Hi there!

Before Emily throws the banana, its potential energy is:

PE = m · g · h

Where:

PE = potential energy.

m = mass of the banana.

g = acceleration of the banana due to gravity.

h = height of the bridge (distance from the bridge to the ground).

When the banana reaches the water, all its potential energy will have converted to kinetic energy. The equation for kinetic energy is as follows:

KE = 1/2 · m · v²

Where:

KE = kinetic energy.

m = mass of the banana.

v = speed.

Then, when the banana hits the water:

m · g · h = 1/2 · m · v²

multiply by 2 and divide by m both sides of the equation:

2 · g · h = v²

√(2 · g · h) = v

5 0

3 years ago

Light of wavelength 500 nm falls normally on 50 slits that are 2.5×10−3mm wide and spaced 5.0×10−3mm apart. How many interferenc

yanalaym [24]

Answer:

3

Explanation:

The solution is in the attached files below

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4 years ago

A person walks into a room that has, on opposite walls, two plane mirrors producing multiple images. Find the distances from the

Lapatulllka [165]

Answer:13.2,41.4,82.8 ft

Explanation:

Given Person is 6.60 ft from the left hand side mirror

Since the focal length of plane mirror is infinity therefore image and object are equidistant from mirror

Distance of first image on left mirror is

$d_1=6.6+6.6=13.2 ft$

i.e. image is 13.2 ft away from object

Second image

Now the right mirror forms the image of object at distance of 14.1 ft right from right mirror so its image is formed in left mirror at a distance of 34.8 from left mirror

so image distance from person is

$d_2=34.8+6.6=41.4 ft$

Third image now form image of second image is formed on right mirror at a distance of 55.5 right from right mirror

and its mirror image is formed on left mirror at a distance of 76.2 left

from left mirror

$d_3=76.2+6.6=82.8 ft$

8 0

3 years ago

which type of geoscientist interprets data from certain instruments to help detect earthquakes and identify fault lines

Volgvan

<span>Seismologists would be your answer. </span>

7 0

4 years ago

Read 2 more answers