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frez [133]
3 years ago
9

What are the two measurements necessary for calculating average speed?

Physics
2 answers:
makkiz [27]3 years ago
8 0
To calculate speed you need to know the distance traveled and the total time
IgorC [24]3 years ago
7 0
Because the average of one measurement would yield to itself, which provides nothing new to us. We need at least two for average to be purposeful.
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Find the momentum of a 25 kg remote
telo118 [61]

Answer:

100

Explanation:

Momentum (P) = Mass (M) × Velocity (V)

Momentum = 25kg × 4.0m/s

Momentum = 100kg m/s

7 0
2 years ago
Words a child uses are called the spoken or ___ vocabulary
Vaselesa [24]

The answer is: Expressive vocabulary

Expressive vocabulary refers to the combination of all the words that a person has acquire throughout his/her life and can be used in various type of situations.

This would include all words in the child vocabulary, starting from the child's   written language, spoken language or even the child's manually signed words.

4 0
3 years ago
The Orion nebula is one of the brightest diffuse nebulae in the sky (look for it in the winter, just below the three bright star
Oxana [17]

Answer:

T=183.21K

Explanation:

We have to take into account that the system is a ideal gas. Hence, we have the expression

PV=nRT

where P is the pressure, V is the volume, n is the number of moles, T is the temperature and R is the ideal gas constant.

Thus, it is necessary to calculate n and V

V is the volume of a sphere

V=\frac{4}{3}\pi r^3=\frac{4}{3}\pi (5.9*10^{15}m)^3=8.602*10^{47}m^3

V=8.86*10^{50}L

and for n

n=\frac{(4000M_s)/(2*mH)}{6.022*10^{23}mol^{-1}}=3.95*10^{36}mol

Hence, we have (1 Pa = 9.85*10^{-9}atm)

T=\frac{PV}{nR}=\frac{(6.8*10^{-9}*9.85*10^{-6}atm)(8.86*10^{50}L)}{(0.0820\frac{atm*L}{mol*K})(3.95*10^{36}mol)}\\\\T=183.21K

hope this helps!!

8 0
2 years ago
A reaction where the consequences of a reaction cause a succeeding like reaction is called a mass reaction .
Mumz [18]

Answer:

not 100% sure what you were asking.

Explanation:

A reaction where the consequences of a reaction cause a succeeding like reaction is called a <u>chain reaction</u>.

3 0
3 years ago
The symbol for the charge on a proton is:
timofeeve [1]

p +
I think is that
4 0
3 years ago
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