The student will draw a picture of a plane with an arrow for weight acting downwards, an arrow for lift acting normal to the wings upwards and an arrow inwards …
A half life of a substance is the time it takes for the mass of a radioactive substance to decrease by half. Say you have 50g of carbon-14, you are …
The object accepts electrons from the surface it is on, electrons have a negative charge.
A coulomb the amount of charge that passes in 1 second when the current is 1 ampere.Q = It t = 5 x 60 = 300 (s) we must use …
It is important to understand that Q=It and therefore by rearranging the equation we know that 1 amp means one coulomb of charge passing through a point every second in …
This question is relating to the balancing of forces on a moving object.The force on the skydiver will be equal to its weight multiplied by its acceleration (the acceleration …
(Using diagrams to aid explention)This is a common difficulty students with Newton's third law, because in isolation it makes sense; If i am pushing a cart, and the cart imparts …
Some of these sources are man made although the main source is from the environment. Radon gas from rocks and cosmic rays from the sun are the main enviromental sources. …
We are given the power of the iron, 2600W and we know that Power = Energy/Time. We are also given the specific heat capacity of steel (C) which gives us …
At the start of the jump, the skydiver starts accelerating downwards due to his weight (force of gravity). There is a resultant force downwards as the weight is larger than …
We may use from the equation sheet, that p = h ρ g. Here, we are looking for a change in pressure, so one or more of the terms on …
First, we look at the energy of the smaller ball.We know Gravitational potential energy = mgh (m=mass g=9.81 h=height)So we can plug our numbers from the question into the equation …
Rutherford performs the alpha particle scattering experiment. Alpha particles incident on a gold foil in a vaccum are scattered by a range of angles, due to the electrostatic repulsion between …
A clamp and stand should be used to hold the spring in place. Ensure its parallel to the stand using a ruler, this reduces the effect of random parralax error …
A control rod is a device that can be used to absorb neutrons released from nuclear fission. They can be used to slow down or completely stop a reaction by …
No it does not. In some cases friction can cause motion. To illustrate this we will consider a body M1 of length L placed on a frictionless surface and …
10m/s
Given that the drop is small enough it produces a semi sphere on screen of liquid due to surface tension. This acts like a powerful convex lens for the light …
X-rays can be used to look at skeletons and find out whether a bone is broken. Gamma rays can be used to sterilise things such as food and medical equipment.
Essentially that objects have a top speed falling through air to the ground, which is called terminal velocity. This is because we are surrounded by air, so when moving, objects …