The energy needed to get a reaction started is the

Physics

1 answer:

Leto [7]3 years ago

4 0

The energy needed to get a reaction started is the B. Activation Energy

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What is the relationship between matter and energy as it changes states of matter (phase changes?)

AlekseyPX

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3 years ago

A woman does 236 J of work

Ratling [72]

Answer:

The woman's force was directed 59.22⁰ to the horizontal.

Explanation:

Given;

work done by the woman, W = 236 J

distance through the load was moved, d = 24.4 m

applied force, F = 18.9 N

inclination of the force, = θ

The work done by the woman is calculated as;

W = Fdcosθ

$cos \ \theta = \frac{W}{Fd} \\\\cos \ \theta = \frac{236 }{18.9 \times 24.4} \\\\cos \ \theta = 0.5118\\\\\theta = cos^{-1} ( 0.5118)\\\\\theta =59.22^0$

Therefore, the woman's force was directed 59.22⁰ to the horizontal.

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katovenus [111]

Yes this is true this causes day and night

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3 years ago

calculate the density of a neutron star with a radius 1.05 x10^4 m, assuming the mass is distributed uniformly. Treat the neutro

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To develop this problem it is necessary to apply the concepts related to the proportion of a neutron star referring to the sun and density as a function of mass and volume.

Mathematically it can be expressed as

$\rho = \frac{m}{V}$