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blondinia [14]
3 years ago
7

_H₂ + O₂- _ H₂O. how do you balance this equation

Physics
2 answers:
RoseWind [281]3 years ago
3 0

Answer:

first balance hydrogen.

Explanation:

2H2+O2---->2H2O

nalin [4]3 years ago
3 0

Answer:

2H^2 + 2H^2O

Explanation:

Put a 2 in front of both H's and the H's will be 4 and the O's will be 2. The chemical equation is balanced.

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When two objects made of different materials are rubbed together, they will attract each other after the charging process.Immers
Sergio039 [100]

Answer:

True

Explanation:

because their is friction(e.g take a ruler rub it in your hair then put it on top of a piece of paper on the table then u will see the process)among the two objects.

4 0
2 years ago
2. Two charges at fixed locations produce an electric field as shown
vagabundo [1.1K]

Answer:

sum of the two forces as both point to the right is a force that points to the right,

Explanation:

The force on the cast load at point Y is given by

        F = q_y  E

force is a vector magnitude so its result is

        ∑ F = Fₐ + F_b

indicate that the charge at y is negative, we analyze the direction of the force created by each charge

Charge A

as the electric field is incoming the charge is negative and as the test charge is negative both repel each other, consequently the force points to the right

Charge B

in this case the electric field lines are salient, therefore the charge is positive, consequently the force on the charge at y is attractive and points to the right

the sum of the two forces as both point to the right is a force that points to the right, that is, in the direction of the charge located at B

3 0
3 years ago
The subfield of anthropology that describes, analyzes, interprets, and explains social and cultural similarities and differences
Makovka662 [10]

Answer:

cultural

Explanation:

Cultural anthropology studies the characteristics of the behavior learned in human societies, that is, science of human culture. In general, it is the science that studies the origin, development, structure, characteristics and variations of human culture in both past and present societies. Ethnography, ethnology, archeology, linguistics and physical anthropology are the disciplines on which cultural anthropology is founded.

6 0
3 years ago
Before the internet was available people often search for jobs?
konstantin123 [22]

Answer:

do you mean how? if so

Explanation:people used newspapersand still kinda do back then they had posters up as they still do and newspapers

5 0
3 years ago
A ball whose mass is 0.4 kg hits the floor with a speed of 8 m/s and rebounds upward with a speed of 6 m/s. Collapse question pa
Colt1911 [192]

Answer:

The  the average magnitude of the force exerted on the ball by the floor 11.2 \times 10^{3} N

Explanation:

Given:

Mass of ball m = 0.4 kg

Initial speed v_{i} = -8 \frac{m}{s}

Rebound speed v_{f} = 6 \frac{m}{s}

Contact time interval \Delta t = 0.5 \times 10^{-3} sec

For finding the average magnitude of the force on the ball by the floor is given by,

   F_{avg}  = \frac{\Delta P}{\Delta t}

Here \Delta P = m (v_{f}- v_{i} )

   F_{avg} = \frac{m (v_{f} -v_{i}  )}{\Delta t}

   F_{avg} = \frac{0.4 \times (6 -( -8 ) )}{0.5 \times 10^{-3} }

   F_{avg} = 11.2 \times 10^{3} N

Therefore, the  the average magnitude of the force exerted on the ball by the floor 11.2 \times 10^{3} N

6 0
3 years ago
Read 2 more answers
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