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Physics explains the very essential of living in our daily lives and helps you think about the world around you and the world beyond. Physics challenges our imagination as simple as when an apple falls from a tree. The apple is accelerated, since its velocity changes from zero as it is hanging on the tree and moves toward the ground. Physics answers are an excellent online study resource for students. It is a profound collection of solved examples and answers for various physics problems and questions. Mastering physics becomes possible with online practice of the problems with our qualified tutors in TutorVista.

Students can avail help from online tutors who can help them understand the concepts and logics behind every theory and answer physics questions. They can also get help with their homework problems and other assignment questions related to the subject. The online physics tutors are experts in their subjects, you will get plenty of personal attention and help with any questions you might have. The students can get grade-specific help to find answers for all of their physics problems.

Studying physics is a great way to sharpen and refine your ability to think for yourself where students get to learn about many everyday experiences that have a simple physics explanation. The students can learn by observing the solved examples. They can understand the concepts step by step, and therefore, they would be able to solve physics problems on their own. Students can learn about the topics in depth and practice problems in order to prepare for their examinations.

Mastering physics, as the name suggests, helps students to master answering physics problems and physics questions. They can avail the free physics help available online to understand various concepts and to learn from the solved examples. They can get elaborate explanations on specific topics with practice tests, so that they can test their learning ability and practice well for their examinations. You may end up teaching physics make sure you understand it well.

Students can get answers to Physics questions online with step by step explanation of sets of solved questions. TutorVista methods and insights are widely applicable and its expert widely sought.

Below mentioned are few of the units covered:

• Motions and Forces
• Conservation of Energy and Momentum
• Heat and Thermodynamics
• Waves
• Electric and Magnetic Phenomena.

The topics are divided into Physics I, II, III and IV based on the complexity of the topics involved. The topics have also been divided on the basis of Grades. Hence students can get Grade specific help along with Homework help. TutorVista allows students to maintain a wide ranging approach to physics and specialize in the subject.

Physics Experts

Students can avail the Physics help from our online tutors. All our veteran tutors have core teaching experience wherein we ensure students have a solid grounding in the key concepts of physics. The students can avail the excellent service and take demo session with tutors by assured friendly and supportive space. Students can get help with understanding the diagrams and the steps of computation distinctive in our teaching approach and develop a deeper understanding of the subject with our 24/7 online help.

Students can get answers in any physics topics from the website which is organized in an array along with TutorVista’s distinct teaching approach.
Despite the topics online if doubts still exists students can avail online sessions with experienced tutors.

Solved Examples

Question 1: A Constant retarding force of 100 N is acting on a body of mass 20 kg moving initially with a speed of 15m/s. How long does the body take to stop?
Solution:

Retarding force F = 100N or
Force F = -100N,
mass m = 20 kg,
Initial Velocity (u) = 15 m/s,
Final Veloctiy (V) = 0
From Newtons Second Law, F = ma
-100N = 20Kg $\times$ a
Acceleration (a) = $\frac{-100 N}{20 kg}$
= - 5m/s2.
But we also know that a = $\frac{V-U}{t}$
-5 = $\frac{0-15}{t}$
-5t = -15
t = 3s.
Time required to stop the body = 3s.

Question 2: What is the magnitude of the force which when it acts on a mass of 10 kg gives it a velocity of 5m/s in one minute?
Solution:

From Newtons second law, F=ma
Initial Velocity (u) = 0,
Final Velocity (V) = 5m/s,
Time (t) = 1 min = 60 s.
$\therefore$ Acceleration = a = $\frac{V-U}{t}$
= $\frac{5-0}{60}$
= $\frac{1}{12}$ m/s2.

Force = ma = 10 $\times$ $\frac{1}{12}$
= $\frac{10}{12}$
= 0.833 N.

The Physics answers are mentioned as per the curriculum. The Concepts are dealt in depth so that the students can gain maximum benefit out of that. The diagrams, tabular column, equations and all are represented in a systematic way to know about any topic in a better way.

Solved Examples

Question 1: What will be the change in the acceleration, if the mass is doubled while constant force is acting on it?
Solution:

From Newtons Second law, F = ma.
Let force acting on the object when the mass is doubled be equal to F1.
i.e., Mass(m1) = 2m
Acceleration produced = a1

F1 = 2m $\times$ a1
given F = F1
$\therefore$ ma = 2 ma1
a = 2a1
Acceleration, a1 = $\frac{a}{2}$.
Thus, acceleration is reduced to half of the given acceleration if mass is doubled.

Question 2: What is the magnitude of the force when it acts on a mass of 10 kg, gives it a velocity of 5m/s in one minute?
Solution:

(a)A wave motion is periodic in nature.The particles of the medium do not move from their mean position but execute vibration but only the energy is transmitted from one point to another.

(b) v = $\lambda$ $\times$ f
where V = Velocity,
$\lambda$ = wavelength,
f = frequency.

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