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3 years ago

What do you call the curved upper surface of the water that comely appears when using a graduated cylinder

Physics

2 answers:

zubka84 [21]3 years ago

7 0

I call it the 'meniscus'.

algol [13]3 years ago

6 0

The curved surface of water is called the meniscus

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Find the force between 2C and -1C separated by a distance 1m. Indicate if it is an attractive force (negative) or a repulsive fo

telo118 [61]

Answer:

Explanation:

Its definitely an Attractive force since the two charges are Unlike.

From Coulombs Law

F=kq1q2/R²

Given

K=9x10^9

R=1m

q1=2C

q2=-1C

F=(9x10^9 x 2 x -1)/1²

F= - 1.8x10^10N. (Attractive).

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3 years ago

How is energy harnessed to do useful work?

baherus [9]

Answer:

But there are ways to harness kinetic energy to either generate useful mechanical work or electricity. This is what many have tried to do to make use of energy that would be otherwise wasted. One way to harness kinetic energy that has popped up many times in recent years has to do with roads and speed bumps

Explanation:

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3 years ago

How much kinetic energy does a roller coaster have if its mass is 3000 kg and is moving at 30 m/s

Jobisdone [24]

The Kinetic energy of an object is given by:
$E_k= \frac{1}{2}mv^2$

Where m is the mass of the object (kg) and v is the velocity of the object (ms-1)

Substituting in:
$E_k= \frac{1}{2}*3000*30^2 = 1350000J$
Therefore the Kinetic energy of the object is 1.35MJ

3 0

3 years ago

What is nuclear pasta?

trasher [3.6K]

Answer:

In astrophysics and nuclear physics, nuclear pasta is a theoretical type of degenerate matter that is postulated to exist within the crusts of neutron stars. If it does in fact exist, nuclear pasta is the strongest material in the universe.

Explanation:

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3 years ago

Read 2 more answers

A spring with a spring constant of 23.6 N/m has a mass attached that exerts a force of 6.28 Newtons. What is the displacement?

Ostrovityanka [42]

Answer:

26.6 cm

Explanation:

We are given that

Spring constant=23.6 N/m

Force exert=6.28 N