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When the string is cut:Gravitational potential energy is converted to kinetic energy.Kinetic energy is converted to elastic potential energy.Elastic potential energy is converted to kinetic energy (and he...
Consider an object in free fall through the atmosphere. Firstly, we need to consider the forces acting on the object. A force diagram will help here. Weight acts from the centre of mass of the object towa...
First, we must calculate the amount of time spent using the whisk in one week:4 x 7 = 28 hours a weekNext we calculate the power used; as the whisk has two motors, the average power used by the whole whis...
The three main types of radiation are alpha, beta and gamma radiation. Alpha particles are the largest, two protons and two neutrons bound together (so they have a +2 positive charge). Th...
Kinetic Energy, EK=(1/2)mv2. Energy is conserved, so the work done by the brakes, W, must be equal to the change in kinetic energy of the car, ∆EK. Therefore: W = ∆EK = (1/2)1000(15AHAnswered by Adam H. • Physics tutor9234 Views
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