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4 years ago

6

Compare the gravitational force on a 33 kg mass at the surface of the Earth (with ra-

1 answer:

poizon [28]4 years ago

4 0

The formula we will be using is;F = G m1 m2 / r^2
F earth = 308N
F moon = G me m2 / (81.3 * 0.27^2 RE^2) = 1/5.927 G me m2 / RE^2 = F earth / 5.927 = 52 N is the force of the earth
So the answer in this question is 52 N.

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while test flying the new f-22 raptor fighter jet, test pilot bob put the plane in a horizontal loop while flying at the speed o

sveticcg [70]

Given

v = 343 m/s

ac = 5g

ac = 5*9.8 m/s^2

ac = 49 m/s^2

where,

v: velocity

ac = centripetal aceleration

Procedure

We call the acceleration of an object moving in uniform circular motion—resulting from a net external force—the centripetal acceleration ac; centripetal means “toward the center” or “center seeking”.

Formula

$\begin{gathered} a_c=\frac{v^2}{r} \\ r=\frac{v^2}{a_c} \\ r=\frac{(343m/s)^2}{49m/s^2} \\ r=2401\text{ m} \end{gathered}$

The minimum radius not to exceed the centripetal acceleration is 2401 m.

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2 years ago

Name the process scientists use to gain knowledge about the physical world

saveliy_v [14]

The answer would be the Scientific Method.

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3 years ago

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A 41.0 kg child swings in a swing supported by two chains, each 2.98 m long. (a) If the tension in each chain at the lowest poin

Alex777 [14]

Answer:695.5 N

Explanation:

mass of child $m=41 kg$

Length of chain $L=2.98 m$

Tension in each chain $T=348 N$

(a)Tension at bottom point $T=348 N$

At lowest Point

$T+T-mg=\frac{mv^2}{L}$

$2T-mg=\frac{mv^2}{L}$

$2\times 348-41\times 9.8=\frac{41\times v^2}{2.98}$

$v^2=\frac{294.2\times 2.98}{41}$

$v=\sqrt{21.38}=4.62 m/s$

(b)Force exerted by Seat will be Equal to Normal reaction

$N-mg=\frac{mv^2}{L}$

$N=mg+\frac{mv^2}{L}$

$N=41\times 9.8+\frac{41\times 21.38}{2.98}$

$N=695.95 N$

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3 years ago

What happens when the temperature of a substance decreases significantly?

SIZIF [17.4K]

When temperature decreases the atoms(or molecules) within the substance begin to slow down.

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3 years ago

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Liono4ka [1.6K]

3.A

4.c

5.A
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3 years ago

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