3 years ago

Matt, Erin, and Lauren were having a challenge to see who could dissolve a one-pound cube of sugar the quickest.

Physics

1 answer:

AnnZ [28]3 years ago

7 0

It should be letter a

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They move outwards.

They don't intersect each other at any point.

They show the electric field.

Explanation:

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This when a satellite orbits in an oval-shaped path around a central object.

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Elliptical orbit.<<<<<<<<<<

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Eukaryotic cells can be unicellular and multicellular true or false

dimaraw [331]

Yes, it can be unicellular and multicellular

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3 years ago

A roller coaster has a "hump" and a "loop" for riders to enjoy (see picture). The top of the hump has a radius of curvature of 1

aivan3 [116]

Answer:

Part a)

$F_n = 306 N$

Part b)

$v = 12.1 m/s$

So this speed is independent of the mass of the rider

Explanation:

Part a)

By force equation on the rider at the position of the hump we can say

$mg - F_n = ma_c$

now we will have

$mg - F_n = \frac{mv^2}{R}$

$F_n = mg - \frac{mv^2}{R}$

now we have

$F_n = 100(9.81) - \frac{100(9^2)}{12}$

$F_n = 981 - 675$

$F_n = 306 N$

Part b)

At the top of the loop if the minimum speed is required so that it remains in contact so we will have

$F_n + mg = ma_c$

$F_n = 0$ at minimum speed

$mg = \frac{mv^2}{R}$

$v = \sqrt{Rg}$

$v = \sqrt{15 \times 9.81}$

$v = 12.1 m/s$

So this speed is independent of the mass of the rider

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3 years ago

What is pressure and force

NNADVOKAT [17]

Pressure is the amount of force exerted on an object and force is strength or energy of an action

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