User Account

All Pages

Vectors, Physics

Assignment Help:

The resultant of two forces 3P and 2P is R. If the first force is doubled then the resultant is also doubled. then the angle between the two forces us. plz xplain with the solution?
Ans)
r2=9p2+4p2+2.6p2cosθ....................1

4r2=(6p)2+4p2+2.12cosθ..................2

dividing 2 from 1

4=(36+4+24cosθ)/(9+4+12cosθ)

9+4+12cosθ=10+6cosθ

6cosθ=-3

cosθ=-0.5

θ=120degree

Related Discussions:- Vectors

Why like charges repel , It is worth noting that positive charges have line...

It is worth noting that positive charges have lines of forces moving out from them and negative charges have lines of forces entering them.for attraction of charges one charge must

Michealson interferometer construction, short answer

short answer

Determine the object direction, Q. If the net force acting on an object is ...

Q. If the net force acting on an object is in the positive x-direction, the object moves only in the positive x-direction. It is not true, the object will accelerate only in the

Moment of inertia of a single particle, For a very every case the moment of...

For a very every case the moment of inertia of a one particle about an axis is given by,   I = mr 2 Here, m is the mass of the particle and r its distance from the axis under

How many neutrons are in nucleus, An isotope of iodine (Z = 53) is used to ...

An isotope of iodine (Z = 53) is used to treat thyroid conditions. Its mass number is 131. How many neutrons are in its nucleus?   131 - 53 = 78 neutrons

Rutherford''s Experiment , My question is that if voltage is increased, the...

My question is that if voltage is increased, the electrons will move faster and the distance between them is changed. Why?

Calculate the irradiance, The greenhouse effect is significant not only on ...

The greenhouse effect is significant not only on Earth but also on Venus and Mars. The following table summarizes the following basic observations:  (A) Using Stefan's equa

Explain ohm''s law, OHM's Law: The current passing by a conductor is di...

OHM's Law: The current passing by a conductor is directly proportional to the potential difference applied across it's end given, the temperature and other physical conditions

Laser, construction and working of ruby laser

construction and working of ruby laser

What was the acceleration of the car, Assume a car rolls down a 52.0-m-long...

Assume a car rolls down a 52.0-m-long inclined parking lot and is stopped by a fence. If it took the car 11.25 s to roll down the hill, what was the acceleration of the car bef

3/9/2013 5:23:12 AM

case 1, R2=(3P)2+(2P)2+2*3*2*P2*cosΘ = 9P2+4P2+12P2cosΘ = 13P2+12P2cosΘ ----->(1)

case 2, (2R)2=(6P)2+(2P)2+2*6*2*P2*cosΘ ; 4R2=36P2+4P2+24P2cosΘ = 40P2+24P2cosΘ ------->(2)

Multiply (1) by 4; 4R2=52P2+48P2cosΘ ------>(3)

(3)-(2) gives, 0=12P2+24P2cosΘ

Therefore, cosΘ = (-1/2) => Θ = cos-1(-1/2) = 120°

Write Your Message!

Captcha
Order Assignment

Featured Services

Order Now

Popular Subjects

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +91-977-207-8620

Phone: +91-977-207-8620

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd