PHYSICS HIGH SCHOOL

What properties are those that describe what happens when a substance reacts with another substance?

Answers

Answer 1
Answer:

The answer is chemical properties :)

Answer 2
Answer: Chemical properties due to the changes in both

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Gravity is greater when there is

Answers

when there is more mass and less distance between two objects
Gravity is greater when there is more mass and less distance between two given objects.

A rectangle has a length of 5.50 m and a width of 12.0 m. What are the perimeter and area of this rectangle?

Answers

to find the perimeter of the rectangle, you do 2(a) + 2(b), so when you add 11 and 24, you get a perimeter of 35 meters.

to find the area, you multiply a and b together and get an area of 66 meters squared.

Radiant heat transfers energy
A.) To nearby solid objects
B.) To the surrounding air

Answers

"One of the earliest methods of central heating involved the use of a boiler. In boiler systems, water is heated using a fossil fuel such as coal, oil, or propane. The water is allowed to convert to steam. It then travels through piping to the various rooms in the house. Each room has at least one radiator. As the name implies, heat energy radiates from this unit. When the heat energy (in the form of infrared waves) encounters solid objects in the room, those objects absorb the energy and warm up. Only a small amount of convection is involved in distributing heat from radiators."

"Radiant heat can also be obtained from electricity-based units. In these appliances, as electricity runs through wires, heat is generated. The wires may glow red. Again, this type of heat is radiated through the air and absorbed by solid objects. Many space heaters are radiant in design."

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"Radiant heat passes through the air and heats solid objects making it highly efficient wherever it's installed. Because radiant heat is produced instantly, there is no need for expensive pre-heating. Infrared heaters provide heat and warmth quickly so you are able to save on the costs of heating seldom used areas."

-Article : How do radiant heaters work? - AEI Corporation

SO...

The answer is:

A) To nearby solid objects

Hope this helps!   :)

By the way, I got this correct on my assignment!

Answer:

To nearby solids

Explanation:

You're conducting a physics experiment on another planet. You drop a rock from a height of 2.3 m and it hits the ground 1.1 seconds later. What is the acceleration due to gravity on this planet?A. 4.2 m/s2
B. 3.8 m/s2
C. 2.4 m/s2
D. 9.8 m/s2

Answers

Acceleration due to gravity on this planet will be 3.802 m / s^2

What are equations of motion?

Equation of motion are defined as equations that describe the behavior of a physical system in terms of its motion as a function of time

Using equation of motion

u=0

s= 2.3 m

t = 1.1 sec

to find = g (acceleration due to gravity on this planet)

s = u t + 1/2 (a ) (t ^(2))

s = 1/2 (g) (t^2)

2.3 = 1/2 (g) (1.1^2)

g = 2 * 2.3 /(1.1)^2

g = 4.6 /1.21= 3.802

correct answer is b) g = 3.802 m / s^2

Learn more about equation of motion

brainly.com/question/14927180?referrer=searchResults

#SPJ2
You get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (B)

How are different types of radiation arranged along the electromagnetic spectrum

Answers

In order of increasing frequency: Radio, Microwaves, Infrared, Visible light, Ultra-violet, X-rays, Gamma rays. To remember this try:
Rabbits
Mates
In
Very
Unusual
e(X)pensive
Gardens

Answer:

By the amount of energy they carry

Explanation:

A coin is placed 32 cm from the center of a horizontal turntable, initially at rest. The turntable then begins to rotate. When the speed of the coin is 110 cm/s (rotating at a constant rate), the coin just begins to slip. The acceleration of gravity is 980 cm/s^2 . What is the coefficient of static friction between the coin and the turntable?

Answers

Answer:

0.39

Explanation:

distance from the center (r) = 32 cm = 0.32 m

speed of the coin (v) = 110 cm/s = 1.1 m/s

acceleration due to gravity (g) = 980 m/s^{2} = 9.8 m/s^{2}

find the coefficient of static friction (k) between the coin and the turn table

frictional force = kmg

before the table begins to move, the frictional force balances the centripetal force ((mv^(2) )/(r))

therefore

frictional force = centripetal force

kmg = (mv^(2) )/(r)

kg = (v^(2) )/(r)

k = (v^(2) )/(r) ÷ g

k = (1.1^(2) )/(0.32) ÷ 9.8 = 0.39
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