Ask question

Ask question

All categories

3 years ago

8

What is newstons 2nd law

2 answers:

Alja [10]3 years ago

6 0

Answer:

Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.

agasfer [191]3 years ago

3 0

Answer:it states that the rate of change of momentum is proportional to the force,and take place in the direction of the force,

Explanation:it states that the rate of change of momentum is proportional to the impressed force and take place in the direction of the force.

Mathematically f=(mv-mu)/t

,

,

You might be interested in

A box slides down a ramp inclined at 24◦ to the horizontal with an acceleration of 1.7 m/s 2 . The acceleration of gravity is 9.

dsp73

Answer:

<h3>0.445</h3>

Explanation:

In friction, the coefficient of friction formula is expressed as;

$\mu = \frac{F_f}{R}$

Ff is the frictional force = Wsinθ

R is the reaction = Wcosθ

Substitute inti the equation;

$\mu = \frac{Wsin \theta}{W cos\theta} \\\mu = \frac{sin \theta}{cos\theta} \\\mu = tan \theta$

Given

θ = 24°

$\mu = tan 24^0\\\mu = 0.445\\$

Hence the coefficient of kinetic friction between the box and the ramp is 0.445

3 0

2 years ago

A solution with a pH of seven must be <br> A. An acid <br> B. A base<br> C.neutral<br> D.water

Dmitry [639]

A pH scale goes from 0 - 14.
7 is in the middle so it is neutral

7 0

3 years ago

What is a wave coming into a barrier

3241004551 [841]

A wave looses its power as it comes to shore because it gets less deeper every second it gets closer to shore

6 0

2 years ago

A step index fiber has a numerical aperture of NA = 0.1. The refractive index of its cladding is 1.465. What is the largest core

Vladimir [108]

Answer:

diameter = 9.951 × $10^{-6}$ m

Explanation:

given data

NA = 0.1

refractive index = 1.465

wavelength = 1.3 μm

to find out

What is the largest core diameter for which the fiber remains single-mode

solution

we know that for single mode v number is

V ≤ 2.405

and v = $\frac{2*\pi *r}{ wavelength} NA$

here r is radius

so we can say

$\frac{2*\pi *r}{ wavelength} NA$ = 2.405

put here value

$\frac{2*\pi *r}{1.3*10^{-6}} 0.1$ = 2.405

solve it we get r

r = 4.975979 × $x^{-6}$ m

so diameter is = 2 × 4.975979 × $10^{-6}$ m

diameter = 9.951 × $10^{-6}$ m

3 0

2 years ago

A plane travels 395,000 meters in 9,000 seconds. What was its speed?

sladkih [1.3K]

When a plane travels 395,000 meters in 9,000 seconds its speed is 395,000 ÷ 9000 = 43.888888 (the 8 repeats) meters per second.

8 0

2 years ago