3 years ago

Which of the following will cause acceleration?

Physics

1 answer:

mixas84 [53]3 years ago

7 0

The correct answer is C.

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vagabundo [1.1K]

Answer:

F = 1200 [N]

Explanation:

Torque is defined as the product of force by Radius.

$T=F*r$

where:

T = torque = 300 [N*m]

r = radius = 50/2 = 25 [cm] = 0.25 [m]

$F=T/r\\F = 300/0.25\\F = 1200 [N]$

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Which unit abbreviation is a measurement of force?

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If the mass of an object were doubled, its acceleration due to gravity would be

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Every gene are made of 2 alleles

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Starting from rest, a 2.1x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exerts

nirvana33 [79]

Answer:

1.327363 m/s

0.00090243 m

Explanation:

u = Initial velocity

v = Final velocity

m = Mass of flea

Energy

$E=\frac{1}{2}m(v^2-u^2)\\\Rightarrow 3.7\times 10^{-4}=2.1\times 10^{-4}(v^2-0)\\\Rightarrow v=\sqrt{\frac{3.7\times 10^{-4}}{2.1\times 10^{-4}}}\\\Rightarrow v=1.32736\ m/s$

The velocity of the flea when leaving the ground is 1.327363 m/s

$W=F\times s\\\Rightarrow s=\frac{W}{F}\\\Rightarrow s=\frac{3.7\times 10^{-4}}{0.41}\\\Rightarrow s=0.00090243\ m$

The flea will travel 0.00090243 m upward

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3 years ago