3 years ago

Physic help????????????????

Physics

2 answers:

arlik [135]3 years ago

6 0

Lets roll with B because heart conditions are critical for cardio.

maxonik [38]3 years ago

4 0

My personal understanding and opinion is that ALL of those questions
should be part of an assessment of Physical Activity Readiness.

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what would the mass be of an object that was moving at a velocity of 35 m/s and has a kinetic energy of 500j be?

bearhunter [10]

Answer:

0.816 kg

Explanation:

$E_k=\frac{1}{2}mv^{2}\\$

so $m=\frac{2E_k}{v^2}=\frac{2\times500}{35^2}=0.816 kg$

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2 years ago

In your own words, explain Newton’s first law of motion.

Over [174]

Newton's first law of motion states that. an object on the rest or motion is stay the same unless external force applied on it.

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3 years ago

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A plate in a parallel-plate capacitor has an area of 0.03 m2 and is 0.5 × 10–3 m from the other plate. The space between the pla

aivan3 [116]

Answer:

4 x 10^-9F

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3 years ago

What is the change in length of a 1400. m steel, (12x10^-6)/(C0) , pipe for a temperature change of 250.0 degrees Celsius? Remem

8090 [49]

Answer:

$\Delta L = 4.2 m$

Explanation:

As per the formula of thermal expansion we know that

$L = L_o(1 + \alpha\Delta T)$

so here we will have

$L_o = 1400 m$

$\alpha = 12 \times 10^{-6} per ^oC$

$\Delta T = 250 degree C$

so here change in the length of the rod is given as

$\Delta L = L - L_o$

$\Delta L = L_o \alpha \Delta T$

$\Delta L = 1400 (12 \times 10^{-6})(250)$

$\Delta L = 4.2 m$

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4 years ago

Which of Newton's laws of motion best illustrates the principle of inertia?

andrew-mc [135]

Newton's first law of motion best illustrates the principle of inertia<span />

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3 years ago