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vlada-n [284]
4 years ago
13

What is meant by the statement '' density of water is 1000 kilograms per cubic metre ''?

Physics
1 answer:
LenKa [72]4 years ago
4 0
It means that if you had a cubic meter of water it would weigh 1000 kilograms
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Some benefits of __________ may increase appropriate social behavior and make uninteresting tasks worth pursuing.
Gnesinka [82]

Answer:

The correct option is C. Some benefits of <u>extrinsic motivation</u>  may increase appropriate social behavior and make uninteresting tasks worth pursuing.

Explanation:

Extrinsic motivation can be described as the courage to do a certain task due to some extrinsic rewards. The extrinsic rewards may be in the form of money, grades, fame etc. A person might change his bad habits or behaviours into good ones to gain fame and popularity. Similarly, tasks that have no values in our eyes may be done with much effort if an external reward is given for them.

6 0
4 years ago
You have an oxygen atom that is looking to bond. How many atoms of one element from column 1 would need to bond with that oxygen
nadezda [96]
Two atoms from column 1. Each would give 1 electron to the Oxygen. Oxygen will be 2- and each group 1 ion will be 1+
6 0
3 years ago
A mass weighing 11 lb stretches a spring 4in. The mass is pulled down an additional 3 in and is then set in motion with an initi
Shtirlitz [24]

Answer:

a) x(t) = 2.845\cdot \cos \left(1.732\cdot t -0.473\pi \right), b) T = 3.628\,s, A = 2.845\,ft, \phi = -0.473\pi

Explanation:

a) The system mass-spring is well described by the following equation of equilibrium:

\Sigma F = k\cdot x - m\cdot g = m\cdot a

After some handling in physical and mathematical definition, the following non-homogeneous second-order linear differential equation:

\frac{d^{2}x}{dt^{2}}+\frac{k}{m}\cdot x = g

The solution of this equation is:

x (t) = A\cdot \cos \left(\sqrt{\frac{k}{m} } \cdot t + \phi\right)

The velocity function is:

v(t) = \sqrt{\frac{k}{m} }\cdot A\cdot \sin \left(\sqrt{\frac{k}{m} }\cdot t +\phi  \right)

Initial conditions are:

x(0\,s) = 0.25\,ft, v(0\,s) = -5\,\frac{ft}{s}

Equations at t = 0\,s are:

0.25\,ft =  A\cdot \cos \phi\\-5\,\frac{ft}{s} =\sqrt{\frac{k}{m} }\cdot A\cdot \sin \phi

The spring constant is:

k = \frac{11\,lbf}{0.333\,ft}

k = 33\,\frac{lbf}{ft}

After some algebraic handling, amplitude and phase angle are found:

\phi = -0.473\pi

A = 2.845\,ft

The position can be described by this function:

x(t) = 2.845\cdot \cos \left(1.732\cdot t -0.473\pi \right)

b) The period of the motion is:

T = \frac{2\pi}{\sqrt{\frac{k}{m} } }

T = 3.628\,s

The amplitude is:

A = 2.845\,ft

The phase of the motion is:

\phi = -0.473\pi

8 0
4 years ago
PLSSSSSSSS HELP WILL GIVE BRAINLYIST
Leto [7]

Answer:

1st digestion

2nd  Most chemical changes in digestion occur in the small intestine

Explanation:

6 0
3 years ago
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A 85 kg skier races down a hill from a height of 100 m. Ignore friction.
Ede4ka [16]

Answer:

(a)158.9 N up the ski slope

(b) 0.19

Explanation:

PLEASE MARK ME AS BRAINLIEST

F^k=MkN

158.9=817.7 M*s

Mk=0.19

4 0
3 years ago
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