Category: Physics

Is it OK to run anaerobic? If you keep running for too long in this anaerobic state, you will have to slow down significantly or stop. But if you are running for a realistic time goal, and are pacing yourself correctly, you should only be running anaerobically for a short period of time, at the […]

What are the rules for swimming? swimmer must break the surface. throughout the race. • May be completely submerged. during turn. • Arms in same horizontal. plane; •Elbows can be out at turn. and finish; •Head must break surface by. widest part of 2nd stroke; •One single butterfly/dolphin. each turn at any time prior to. […]

Can light be a reference frame? In all reference frames that actually exist, light travels through space and time in a normal way just like any other object. According to Special Relativity, as a frame goes faster, it shortens more in the direction of motion, relative to the stationary observer. How did Einstein know that […]

Why did the ball roll when laid on the floor? because the friction present between the surface pushes the atoms/particles in contact with surface or ground backwards, hence with centre of mass moving in a direction, the ball’s bottom surface(ie. The surface in contact) moves in opposite direction or backwards, causing the ball to roll. […]

What are two main sources of the sediment that rivers and streams carry? The two main sources of the sediment carried by the streams and rivers are from the mass movement and runoff. What is the largest river on Earth? Nile River Which is the smallest river in the world? Roe River Which country has […]

How long do atoms live for? For carbon-14, this number is 5,730 years. For different radioactive atoms, this number can be anywhere from a tiny fraction of a second to minutes, hours, days, or even millions of years. But, in all these cases, the point of the decay is to reach a type of atom […]

What is the change in momentum of a 3 kg object accelerating from rest to 12 m s? momentum = 36 kg-m/s. Change in momentum = 36 kg-m/s. That’s the impulse that caused the change. What will be the momentum of a stone having mass of 10 kg when it is thrown with a velocity […]

What month do geese fly south? Late spring or early summer is typically when you’ll notice geese flying north in that famous V pattern (which they use to save energy as it reduces wind drag on the geese not at the tip of the V). September and early November is typically when geese begin flying […]

Can you fly through a tornado? Flying through a tornado could destroy an airplane; pilots avoid all thunderstorms — particularly those producing tornadoes — by a wide margin. Is a tornado more dangerous than a hurricane? While both types of storms are capable of producing destructive winds, tornadoes can become stronger than hurricanes. The most […]

Which is the densest of all layers? inner core What are the 4 layers of earth? Starting at the center, Earth is composed of four distinct layers. They are, from deepest to shallowest, the inner core, the outer core, the mantle and the crust. Except for the crust, no one has ever explored these layers […]