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3 years ago

5

PLEASE HELP WILL GIVE BRAINLIEST

1 answer:

Greeley [361]3 years ago

5 0

Answer:C

Explanation:BECASE THEY ARE ONE OF THE PEST KILLERS SRY BUT IM THE MYSTER MAN WHOOOSH ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? OH AND PLS FOR BRAINIEST

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3 years ago

PLEASE HELP! I'LL GIVE BRAINLEST

Harlamova29_29 [7]

Answer:

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Explanation:

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A student performs an exothermic reaction in a beaker and measures the temperature. If the thermometer initially reads 35 degree

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Read 2 more answers

You want to move a 4- kg bookcase to a different place in the living room. If u push with a force of 65 n and the bookcase accel

IrinaK [193]

Answer:

1.65

Explanation:

The equation of the forces along the horizontal direction is:

$F-F_f = ma$ (1)

where

F = 65 N is the force applied with the push

$F_f$ is the frictional force

m = 4 kg is the mass

$a=0.12 m/s^2$ is the acceleration

The force of friction can be written as $F_f = \mu R$ (2), where

$\mu$ is the coefficient of kinetic friction

R is the normal force exerted by the floor

The equation of forces along the vertical direction is

$R-mg=0$ (3)

since the bookcase is in equilibrium. Substituting (2) and (3) into (1), we find

$F-\mu mg = ma$

And solving for $\mu$ ,

$\mu = \frac{F-ma}{mg}=\frac{65-(4)(0.12)}{4(9.8)}=1.65$

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3 years ago

1. According to Newton's third law of motion, how are action

san4es73 [151]

Answer:

you couldn't do this on your own or search it up on google

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3 years ago