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zzz [600]
3 years ago
5

Why do scientists conduct experiments ?

Physics
1 answer:
kkurt [141]3 years ago
8 0
Scientists conduct experiments in order to prove a theory or a prediction they have or contradict it, so that then they can write down their results to study them.
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Sedimentary rock turns into magnum through which process
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Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the particles in suspension. This sediment is often formed when weathering and erosion break down a rock into loose material in a source area.
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Mateo’s parents are thinking about investing money to help develop a new fusion power plant. Which issue is most important to co
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The answer is A because fusion has never been controlled in a non explosive manner. 
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Which has a higher frequency - visible or infrared radiation?
bearhunter [10]
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3 years ago
A BB gun is discharged at a cardboard box of mass m2 = 0.65 kg on a frictionless surface. The BB has a mass of m1 = 0.012 kg and
balandron [24]

Answer:

1. v_{1f} = v_{1i} - \frac{m_2}{m_1*v_{2f}}

2. v_{1f}=77.875m/s

3. v_f=1.79m/s

Explanation:

Use conservation of momentum:

p_i=p_f

m_1*v_{1i} + m_2*v_{2i} = m_1*v_{1f} + m_2*v_{2f}

1.

The expression for the magnitude of the BB's velocity is

v2i = 0 m/s, solve for v1f

v_{1f} = v_{1i} - \frac{m_2}{m_1*v_{2f}}

2.

Now replacing numeric to find the value

v_{1f} = 99 m/s - \frac{0.65kg}{0.012kg*0.39m/s}

v_{1f}=77.875m/s

3.

Now is doesn't exist the box the velocity will be

v1f = v2f = vf

Conservation of Momentum

p_i=p_f

m_1*v_{1i} = (m_1+m_2)*v_f

v_f = m_1*v_{1i} / (m1+m2)

v_f = \frac{0.012kg * 99 m/s }{(0.012 kg + 0.65 kg)}

v_f=1.79m/s

8 0
3 years ago
A quantity of an ideal gas is compressed to half its initial volume. The process may be adiabatic, isothermal or occurring at co
asambeis [7]

Answer:

B. constant pressure, isothermal, adiabatic

Explanation:

A quantity of an ideal gas is compressed to half its initial volume.

The process may be adiabatic, isothermal or occurring at constant pressure.

Adiabatic-constant heat

Constant pressure or isobaric

Isothermal or constant temperature

An external agent is a system that does work on a system or a machine.

This external agent applies force , or changes the state of the body it is acting on.

In order of the work required of an external agent, least to greatest

The following processes will be arranged.

constant pressure, isothermal, adiabatic

4 0
3 years ago
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