2 years ago

What is a disadvantage of constructing hydroelectric dams as a source of

Physics

1 answer:

Papessa [141]2 years ago

8 0

Answer:

I think maybe C. They require a large amount of land disturbance and potential displacement of people

Explanation:

Hope this helps.

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Reeti has a mass of 51.0 kg. The Gravitron, a ride that spins so fast that the floor can be removed without the riders falling,

Serggg [28]

Answer:

L = 2774.4 $kgm^{2}/s$

Explanation:

Using the formula

L = mvr

Where L is angular momentum

m is mass

v is velocity

r is radius

m= 51kg , v=17m/s , r=3.2m

L = 51×17×3.2

L = 2774.4 $kgm^{2}/s$

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2 years ago

My question is An object may be acted on by several forces. What name is given to the single force that has the same effect as t

wariber [46]

Newtons Law of motion

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3 years ago

Read 2 more answers

Un autocar que circula a 81 km/h frena uniformemente con una aceleración de -4,5 m/s2.

horsena [70]

Answer:

a) $\Delta x=56.25 m$

b) imagen adjunta

Explanation:

a) Primero debemos hacer la conversión de 81 km/h a m/s, esto es 22.5 m/s.

Ahora, usando la ecuacion cinemática, en un movimiento acelerado tenemos:

$v_{f}^{2}=v_{0}^{2}+2a \Delta x$

Queremos encontrar la posición hasta detenerse, osea vf = 0.

$\Delta x=\frac{-v_{0}^{2}}{2a}$

$\Delta x=\frac{-22.5^{2}}{-2*4.5}$

$\Delta x=56.25 m$

b) Para este caso el gráfico se encuentra adjunto.

Espero que te sirva de ayuda!

Download pdf

8 0

3 years ago

A force of 19 newtons is applied on a cart of 2 kilograms, and it experiences a frictional force of 1.7 newtons. What is the acc

amid [387]

A= f/m

a= 19/2

a= 9.5m/s^2

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3 years ago

What was the most serious money problem faced by people in the early United States?

alexira [117]

♥B. There was no single medium of exchange.♥
Take a look at the saying "Not worth a Continental".
It referrers to the fact that currency issued by the Continental Congress was usually just a promise to pay.
Leaving your answer with ♥B♥

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3 years ago