Joined in 2023 
82 
63 About this deal
Give your answers in standard form (also known as scientific notation), with one figure before the decimal point. Exam-style questions 1 A bullet of mass 25 g is travelling at 450 m s −1 when it strikes the armour plating of a tank. d Sketch a graph to show how the mean kinetic energy of the particles of a gas changes as its temperature increases. Remember to always calculate a spacecraft’s distance from the centre of the Earth, not its distance above the Earth’s surface.
The joule is defined as the work done (or energy transferred) when a force of 1 N moves a distance of 1 m in the direction of the force. the amount of energy changed from other forms into electrical energy per unit charge produced by an electrical supply potential difference (p. Explain why the distance between regeneration amplifiers is larger when using fibre optic transmission rather than coaxial cable.
Terminal velocity When an object moves through a fluid, such as air or water, it experiences an additional drag force. You may need to find the value of a trigonometric function (such as sine or cosine) of an angle whose value is given in radians. Copy the diagram and, using the same axes: a Sketch the variation with time of a wave with twice the amplitude; your wave should be in phase with the wave in the diagram. State the speed of a β+ -particle and the speed of a particle of γ-radiation, each of which has approximately the same energy as the β− -particle.
Detailed Learning support is provided throughout to help students to tackle the different exercises and build confidence to answer questions independently. a State the quantity represented by each symbol in this equation and give its unit (name and symbol). Air resistance acts in the opposite direction to the ball’s velocity and increases as its velocity increases. You can calculate the pressure on the base of the tank in steps which follow the derivation of the equation for pressure p = ρ gh. Calculate the distance travelled by the arrow in question 4 if it was fired at 50° to the horizontal, at the same initial velocity as before.Use signal-to-noise ration = 10 lg(P1/P2) with P1 as the signal and P2 as the noise) b Calculate the minimum input signal power to the fibre. d Copy the diagram and, on the same axes, draw the displacement–time graph for a point that has a phase difference of 90º to the oscillation of the particle shown. ii State whether the frequency of the vibrator must be increased or decreased to form the same stationary wave pattern on the string as shown in the diagram.
Great Deal 
New Comment