2 years ago

What does Newton's law all about?

Physics

1 answer:

KengaRu [80]2 years ago

5 0

Newton's law is all about motion

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tia_tia [17]

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3 years ago

A 150 g ball and a 240 g ball are connected by a 33-cm-long, massless, rigid rod. The balls rotate about their center of mass at

stira [4]

Answer:

v= 3.18 m/s

Explanation:

Given that

m= 150 g = 0.15 kg

M= 240 g = 0.24 kg

Angular speed ,ω = 150 rpm

The speed in rad/s

$\omega =\dfrac{2\pi N}{60}$

$\omega =\dfrac{2\pi \times 150}{60}$

ω = 15.7 rad/s

The distance of center of mass from 150 g

$r=\dfrac{150\times 0+240\times 33}{150+240}\ cm$

r= 20.30 cm

The speed of the mass 150 g

v= ω r

v= 20.30 x 15.7 cm/s

v= 318.71 cm/s

v= 3.18 m/s

6 0

3 years ago

Which is equal to 4 hectometers?

liberstina [14]

B: 0.4 kilometers ...

5 0

3 years ago

As a snowboarder descends a mountain slope, gravity, the normal force, and friction combine to exert a net force of 320 N in the

Elis [28]

Answer:

34.75m

Explanation:

Parameters given:

Net force, F = 320N

Work done by net force, W = 4700 N

Angle, θ = 65º

Work done at an angle is given as:

W = F * d * cosθ

Where d = distance travelled

θ is the angle between the force and the direction of motion.

Therefore,

4700 = 320 * d * cos65

=> d = 4700/(320 * cos65)

d = 34.75 m

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3 years ago

If the overall magnification of a series of two lenses is 30x, and one lens magnifies 5x, what is the magnification of the other

dimulka [17.4K]

Answer:

Explanation:

Given

Overall magnification $M=30 x$

One lens magnification is $5 x$

suppose the magnification of other lens is $y$

A compound lens is made up of series of lenses either of same or of different magnification so

$y$ is given by

$y=\frac{30 x}{5 x}=6 x$

If $5 x$ lens is replaced by $7 x$ lens then total magnification is

$7 x\times 6 x=42 x$

4 0

3 years ago

What does Newton's law all about?​

What does Newton's law all about?