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Brums [2.3K]
3 years ago
6

What did the scientist Robert Hooke claim ?

Physics
2 answers:
trapecia [35]3 years ago
7 0
Robert Hooke<span> (1635 - 1703) The Englishman </span>Robert Hooke<span> (18th July 1635 - 3rd March 1703) was an architect, natural philosopher and brilliant </span>scientist, best known for his law of elasticity (Hooke's<span> law), his book Micrographia, published in 1665 and for first applying the word "cell" to describe the basic unit of life.</span>
alexgriva [62]3 years ago
7 0
Hooke was a brilliant scientist and his famous for his law of elasticity ( Hooke's law )

But he was also the first to apply the word "cell" to describe the basic unit of life.
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A 40 N crate rests on a rough horizontal floor. A 12 N horizontal force is then applied to it. If the coecients of friction are
bixtya [17]

Answer:

Fr = 20 (N)

Explanation: See atached file ( free body diagram)

As for Newton´s low

∑ Fy  =  0

-mg + N = 0        ⇒  - 40 + N = 0       ⇒ N  = 40 [Newtons]

by definition :  Fr = μs * N        ⇒  Fr = 0,5 * 40      ⇒  Fr = 20 (N)

∑ Fx  =  0   body is at rest

Fe - Fr = 0

Fr > Fe

Fr > 12 (N)  the body is at rest

6 0
3 years ago
What is the longest wavelength of radiation that possesses the necessary energy to break the bond 941?
Anna71 [15]
<span>Energy is calculated by molecule dividing energy by mole by Avogadro's number (6.022*10^23) 941kJ=9.41*10^5 J so energy by molecule E= 9.41*10^5/6.022*10^23=1.563*10^-18 J Wavelength (w) given by E=hc/w where, E = energy h = planks constant (6.6262 x 10-34 J·s) c = speed of light (3 x 10^8 m/s ) So, w= hc/E = (6.6262*10^-34)*(3*10^8) /1.563*10^-18 = 127.2 Nm Longest wavelength of radiation =127.2 Nm</span>
3 0
3 years ago
With the aid of a string, a gyroscope is accelerated from rest to 16 rad/s in 0.40 s. what is its angular acceleration in rad/s2
vovikov84 [41]

Angular acceleration = (change in angular speed) / (time for the change)

Change in angular speed = (ending speed) minus (starting speed)

Change in angular speed = (16 rad/s) - (zero) = 16 rad/s .

Angular acceleration = (16 rad/s) / (0.4 s)

(Average) angular acceleration = 40 rad/s²

4 0
3 years ago
Which wave shows the loudest sound below?​
pochemuha

Answer:

I think C

Explanation:

If im right give brainliest :)

8 0
3 years ago
Read 2 more answers
PLZ HELP!! List properties of ions.
Andreas93 [3]
Ionic compounds typically have high melting and boiling points, and are hard and brittle. when melted or dissolved they become highly conductive, because the ions are mobilized.
3 0
3 years ago
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