2 years ago

Nuclear sizes are expressed in a unit named

Physics

1 answer:

o-na [289]2 years ago

4 0

Answer:

Answer is A) Fermi

Explanation:

Fermi is the expressive unit for nuclear sizes. Fermi = 10^-15 meter.

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A primary coil of a transformer in a toy electric car has 300 turns and the secondary coil has 30 turns. How many volts will be

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2 years ago

Susan's 12.0 kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30∘ above the

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Answer:1.71 m/s

Explanation:

Given

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coefficient of Friction $\mu =0.18$

Resolving Forces Along x axis

$F_x=T\cos \theta -f_r$

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since there is no movement in Y direction therefore

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Thus $F_x=T\cos \theta -\mu N$

$F_x=29\cos (30)-\0.18\times (12\times 9.8-29\sin (30))$

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Work done by applied Force is equal to change to kinetic Energy

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$6.556\times 2.7=\frac{1}{2}\cdot 12\times v_f^2$

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2 years ago

A box with a mass of 40 kg sits at rest on a frictionless tile floor. with your foot, you apply a 20 N force in a horizontal dir

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Answer:

0.5 m/s²

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according to Newton's second law, we are goven a relationship between force, mass and acceleration, with the formula:

F = m×a

F for force

m for mass

a for acceleration

we use the given data and get:

20 = 40×a

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1 year ago

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