Physics Questions On this page I put together a collection of physics questions to help you understand physics better. These questions are designed to challenge and inspire you to think about physics at a deeper level. Download Death Note Episode 13 Subtitle Indonesia here. What Does Drug Activity Impaired Drivers Mean. In addition to being challenging, these questions are fun and interesting. This page is a good resource for students who want good quality problems to practice with when studying for tests and exams.

To see the questions click on the category you are interested in: High School Physics Questions Problem # 1 Do heavier objects fall more slowly than lighter objects? Problem # 2 Why do objects float in liquids denser than themselves?

Problem # 3 A particle is moving around in a circle and its position is given in polar coordinates as x = Rcosθ, and y = Rsinθ, where R is the radius of the circle, and θ is in radians. From these equations derive the equation for centripetal acceleration. Problem # 4 How come in free fall you feel weightless even though gravity is pulling down on you? (ignore air resistance when answering this question). Problem # 5 What is the difference between centripetal acceleration and centrifugal force? Problem # 6 What is the difference between energy and power? Problem # 7 Two identical cars collide head on.

Prodigy Discography Torrent Mp3 Quran more. Each car is traveling at 100 km/h. The impact force on each car is the same as hitting a solid wall at: (a) 100 km/h (b) 200 km/h (c) 150 km/h (d) 50 km/h Problem # 8 Why is it possible to drive a nail into a piece of wood with a hammer, but it is not possible to push a nail in by hand?

Irodov - Problems in General Physics. Site exir.ru (old name irodov.nm.ru), created in 2002 as the collection of solutions for I.E. Irodov Problems in General Physics. This book is vary popular in Russian technical universities. After a while solutions to other books of physics problems have been added. But all this content.

Problem # 9 An archer pulls back 0.75 m on a bow which has a stiffness of 200 N/m. The arrow weighs 50 g. What is the velocity of the arrow immediately after release? Problem # 10 When a moving car encounters a patch of ice the brakes are applied. Why is it desirable to keep the wheels rolling on the ice without locking up? Solutions For High School Physics Questions Solution For Problem # 1 No.

If an object is heavier the force of gravity is greater, but since it has greater mass the acceleration is the same, so it moves at the same speed (if we neglect air resistance). If we look at Newton's second law, F = ma. The force of gravity is F = mg, where m is the mass of the object and g is the acceleration due to gravity. Equating, we have mg = ma.

Therefore, a = g. If there was no air resistance, a feather would fall at the same speed as an apple. Solution For Problem # 2 If an object were completely immersed in a liquid denser than it, the resulting buoyant force would exceed the weight of the object. This is because the weight of the liquid displaced by the object is greater than the weight of the object (since the liquid is denser). As a result, the object cannot remain completely submerged and it floats. The scientific name for this phenomenon is Archimedes Principle. Solution For Problem # 3 Without loss of generality, we only need to look at the equation for the x-position, since we know that centripetal acceleration points towards the center of the circle.

Thus, when θ = 0, the second derivative of x with respect to time must be the centripetal acceleration. The first derivative of x with respect to time t is: dx/dt = - Rsinθ(d θ/d t) The second derivative of x with respect to time t is: d 2x/dt 2 = - Rcosθ(d θ/d t) 2− Rsinθ(d 2 θ/d t 2) In both of the above equations the chain rule of Calculus is used and by assumption θ is a function of time.

Therefore, θ can be differentiated with respect to time. Now, evaluate the second derivative at θ = 0. We have, d 2x/dt 2 = - R(d θ/d t) 2 The term d θ/d t is usually called the angular velocity, which is the rate of change of the angle θ.

It has units of radians/second. For convenience we can set w ≡ d θ/d t. Therefore, d 2x/dt 2 = - R w 2 This is the well-known form for the centripetal acceleration equation. Solution For Problem # 4 The reason you feel weightless is because there is no force pushing against you, since you are not in contact with anything. Gravity is pulling equally on all the particles in your body.