PLZZZZ HELP ME FOR BRAINLIEST AND 100 POINTS!!!!!!!

Physics

2 answers:

AleksandrR [38]3 years ago

7 0

Nuclear reactors are the heart of a nuclear power plant. They contain and control nuclear chain reactions that produce heat through a physical process called fission. That heat is used to make steam that spins a turbine to create electricity.

dlinn [17]3 years ago

4 0

Answer:

i cant see the picture

Explanation:

i cant see the picture

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14 km = m on conversions using a ladder method

lozanna [386]

Using the metric units kilometer (km) and meter (m), as seen in the picture of the ladder method example. So, the answer would be 14km = 14000m

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3 years ago

WILL GIVE BRAINLIEST

Vladimir [108]

Answer:

$2\:\mathrm{m/s^2}$

From Newton's 2nd Law, we have $\Sigma F=ma$ . Substituting given values, we have:

$40=20a,\\a=\frac{40}{20}=\boxed{2\:\mathrm{m/s^2}}$

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3 years ago

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sertanlavr [38]

Acid rain fall is making the earth more polluted and is destroying our earths surface

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A historical society is testing an old cannon. They

sveta [45]

Answer:

26.2 m/s

Explanation:

We can find the speed of the cannonball just by analyzing its vertical motion. In fact, the initial vertical velocity is

$u_y = u sin \theta$ (1)

where u is the initial speed and $\theta = 45.0^{\circ}$ is the angle of projection.

We can therefore use the following suvat equation for the vertical motion of the ball:

$v_y = u_y + at$

where $v_y$ is the vertical velocity at time t, and $a=g=-9.8 m/s^2$ is the acceleration of gravity. The time of flight is 3.78 s, so we know that the ball reaches its maximum height at half this time: