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4 years ago

How do kinetic and potential energy work on a waterslide or roller coaster

1 answer:

6 0

On a roller coaster potential energy builds up while you are going up a hill . Once at the top all of that energy is being released this giving you a push which means all of that energy is making you down down the hill. Hope this helps you.

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PLZ HELP DUE IN 10 MINUTES

likoan [24]

Answer:50%

Explanation: put it you are in a hurry

6 0

3 years ago

Your aunt just turned 50 and now needs glasses to read.

alexira [117]

Answer:

(a) hypermetropia

(b) convex lens

(d) - 21.05 cm

Explanation:

(a) As she is old age, so she is suffering from hypermetropia.

(b) It is the defect due to which a person is not able to see the nearby objects clearly, so it is cured by convex lens of suitable focal length.

Focal length is the reciprocal of power of lens.

f = 1/ P = 1/0.75

f = 133.33 cm

(d) v = -25 cm, f = 133.3 cm

use lens equation

$\frac{1}{f}=\frac{1}{v}-\frac{1}{u}$

$\frac{1}{133.3}=\frac{-1}{25}-\frac{1}{u}$

$\frac{-1}{u}=\frac{133.33+25}{133.33\times25}$

u = - 21.05 cm

8 0

3 years ago

A spring with spring constant 31 N/m is attached to the ceiling, and a 4.5-cm-diameter, 1.5 kg metal cylinder is attached to its

aalyn [17]

Answer:

0.315758099469 m

Explanation:

m = Mass of cylinder = 1.5 kg

$\rho$ = Density of water = 1000 kg/m³

V = Volume = Ah

A = Area = $\pi r^2$

k = Spring constant = 31 N/m

x = Displacement

g = Acceleration due to gravity = 9.81 m/s²

Here the forces are conserved

Weight of cylinder = Buoyant force + Spring force

$mg=\rho Vg+kx\\\Rightarrow mg=\rho Ahg+kx\\\Rightarrow 1.5\times 9.81=1000\times \pi(2.25\times 10^{-2})^2x\times 9.81+31x\\\Rightarrow 1.5\times 9.81=46.60213x\\\Rightarrow x=\dfrac{1.5\times 9.81}{46.60213}\\\Rightarrow x=0.315758099469\ m$

The length of the submerged cylinder is 0.315758099469 m

4 0

4 years ago

When the atmosphere is absolutely unstable, the environmental lapse rate is ________ the dry adiabatic lapse rate.

insens350 [35]

Answer: greater than

Explanation:

5 0

3 years ago

Give some sources of potential difference (P.D) that you know.

Anna [14]

All type of Batteries
secondary batteries ( Rechargeable battery) example car battery etc . these battery contain Sulphuric acid as there electrolytic
Primary Battery (Non Recharge) example Dry cell , pencil cell . These battery contain chemicals they react when we use the battery and can't be recharged again we need to replace each and every time

4 0

3 years ago