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grigory [225]
3 years ago
7

In which step of the scientific method is information obtained through the senses?

Physics
2 answers:
lara31 [8.8K]3 years ago
8 0
D, making observations. If you make observations, you obtain information through the senses.
katen-ka-za [31]3 years ago
4 0

D: Making Observations

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A 22-g bullet traveling 265 m/s penetrates a 1.9 kg block of wood and emerges going 125 m/s .
Usimov [2.4K]

The body moves at a velocity of 1.62m/s after the bullet emerges.

<h3>Given:</h3>

Mass of bullet, m_1 = 22g

                               = 0.022 kg

Mass of the block, m_2 = 1.9 kg

Velocity of bullet , v_1 = 265 m/s

v_2 = 0

According to the law of collision which states that the momentum of the body before the collision is equal to the momentum of the body after the collision.

After penetration;

v^{'}_1 =125 m/s

v^{'}_2=?

The formula for calculating the collision of a body is expressed as:

p = mv

m is the mass of the body

v is the velocity of the body

∴ Momentum before = Momentum after

Substitute the given parameters into the formula as shown:

   m_1v_1+ m_2v_2 = m_1v^{'}_1+ m_2v^{'}_2\\0.022* 265 + 0 = 0.022*125+1.9*v^{'}_2\\5.83 = 1.9 v^{'}_2\\v^{'}_2 = 1.62 m/s

Therefore, It moves with a velocity of 1.62 m/s.

Learn more about momentum here:

brainly.com/question/25121535

#SPJ1

6 0
2 years ago
A gas expands at a constant pressure of 3 atm from a volume of 0.02 cubic meters to 0.10 cubic meters. In the process it experie
Nonamiya [84]

a) 2.4\cdot 10^4 J

For a gas transformation occuring at a constant pressure, the work done by the gas is given by

W=p(V_f -V_i)

where

p is the gas pressure

V_f is the final volume of the gas

V_i is the initial volume

For the gas in the problem,

p=3 atm = 3\cdot 1.013\cdot 10^5 Pa = 3.039\cdot 10^5 Pa is the pressure

V_i = 0.02 m^2 is the initial volume

V_f = 0.10 m^3 is the final volume

Substituting,

W=(3.039\cdot 10^5 Pa)(0.10 m^3-0.02m^2)=24312 J = 2.4\cdot 10^4 J

b) 3.24\cdot 10^5 J

The heat absorbed by the gas can be found by using the 1st law of thermodynamics:

\Delta U = Q-W

where

\Delta U is the change in internal energy of the gas

Q is the heat absorbed

W is the work done

Here we have

\Delta U = 3.0\cdot 10^5 J

W=2.4\cdot 10^4 J

So we can solve the equation to find Q:

Q=\Delta U + W = 3.0\cdot 10^5 J +2.4\cdot 10^4 J = 3.24\cdot 10^5 J

And this process is an isobaric process (=at constant pressure).

8 0
3 years ago
Hey can you plz go visit www.innerg fitness and buy plz! Thanks alot
alex41 [277]

Answer:

sure I'll check it out

6 0
3 years ago
A truck travels 6 meters in the first second of travel, 6 meters again during another second of travel, and 6 meters again durin
Alexandra [31]
D. Assuming that it doesn’t accelerate and then decelerate between seconds.
3 0
3 years ago
PLEASE HELP!!! !) POINTS WILL BE AWARDED AND BRAINIEST ANSWER IF ITS CORRECT!
Archy [21]
A. Their displacement is the same, zero miles.
7 0
3 years ago
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