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ella [17]
4 years ago
13

What effect does observing a substance's physical properties have on the substance

Physics
1 answer:
Phoenix [80]4 years ago
4 0
It can be observed without changing the identity of the object.
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Can you change your mass without changing your weight?
Ratling [72]
No, because mass is the amount of matter in something and weight is the pull of gravity on a object, for example you would weigh 65 pounds.. and have the mass of 1058..if you were in space your weight would change but your mass will always stay the same
6 0
4 years ago
Some radar systems detect the size and shape of objects such as aircraft and geological terrain. What is the frequency of such a
vova2212 [387]

Answer:

f=1.57\times 10^9\ Hz

Explanation:

Given that,

A system can detect objects as small as 19.1 cm i.e. 0.191 m. It is the wavelength.

We know that,

Frequency, f=\dfrac{c}{\lambda}

So,

f=\dfrac{3\times 10^8}{0.191}\\\\=1.57\times 10^9\ Hz

So, the frequency of such a system is equal to1.57\times 10^9\ Hz.

4 0
3 years ago
Fire spreading from a wall to a nearby couch due to radiant heat transfer is an example of: Select one:
Mrac [35]

Fire spreading from a wall to a nearby couch due to radiant heat transfer is an example of heat reflectivity.

<h3>What is heat reflectivity?</h3>

When sunlight and other light sources strike a material's surface, its reflectance is measured. This number can be used to characterize a surface's characteristics in terms of surface finish. Another name for reflection is reflectivity.

This is a measurement of the amount of energy that material reflects at a specific wavelength. A value between 0 and 1 can also be used to represent reflectivity (or a percentage between 0 and 100).

Sigma and other top businesses have created a range of other forms of heat reflective fabric in the 50 years after the creation of space blankets, including Fabric and aluminum foil laminates, fabric laminates with metalized thin films.

Learn more about heat reflectivity here:

brainly.com/question/26105866

#SPJ4

6 0
2 years ago
A horse running at 38 m/s reduces to 12 m/s in 10 seconds. What is the horse’s acceleration?
telo118 [61]
Never gonna give you up
Never gonna let you down
Never gonna run around and desert you
Never gonna make you cry
Never gonna say goodbye
Never gonna tell a lie and hurt you

8 0
3 years ago
8 N to the left , and 4 N to the right. Find the net force. Is this balanced?
alukav5142 [94]

Explanation:

12N by first law of newton is net force after colloision

7 0
2 years ago
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