must have constant velocity. must have zero momentum. 10. The inertial mass of a body may be defined as A. B. C. D. the ratio of the resultant force acting on the body to its acceleration.
G. TRUE or FALSE: The acceleration of a particle following a space curve lies in the normal plane. 2) Sketch the curve with the given vector equation, starting at t=0 . Indicate with an arrow the direction in which t increases. Be sure to include a few points to justify your graph. 8pts r(t) = cos t, sin t, sin
Under the assumption that current and voltage are both sinusoidal functions of time (t, in seconds) and both have the same frequency of 60 cycles per second (period=1/60), let C be the current in Amperes (Amps) with a maximum current of 5 Amps at zero seconds (t=zero). Let V be the voltage that is “leading” the current (‘leading’ corresponding to a negative phase shift) by .003 seconds, meaning voltage reaches its maximum of 180 volts .003 sec before the current reaches its maximum. Both functions begin at zero- there are no phase shifts. Question 1, Part A. Current as a function of time: Based upon the given information, we will be determining the Amplitude (A), period (and thus, B), and the phase shift (C).
This changes the now rational exponent to x^3/3, which simplified leaves x as the final answer. * The product of powers property states that exponents with the same base, when multiplied, add their exponents together. So we add the numerators up and keep the denominator to get x^3/3, which is simply x. * When a negative exponent is in the denominator as it is here, you make it bring it upward to make a positive. One times x^1 leaves x when simplified.
In this sort of example you should choose one direction to be positive and the other direction to be negative. The example below illustrates this point. I will choose the right to be positive and the left to be negative. Before being fired After being fired -pcannon +pball p=0 pball - pcannon = 0 Sample Question 8 Sample Question 9 Static electricity In static electricity when two objects are rubbed together the electrons move from one object to another. This causes one object to have an overall positive charge and the other object to have an overall negative charge.
Was there a normal distribution? Defend your position by interpreting the normality tests. (0 marks as this question is part of data screening for the writing of the results in Task 10) The results show that the test is not significant as according to Smirnov and Shapiro-Wilk, the sig. =.200, .175, .183 and .122, which are greater than .05. Thus meaning that the assumption of normality was met According to skewness and kurtosis there is no problem with normality as both scores of -1.57 (skewness) and -0.39 (kurtosis) are both within the range of +/- 3.29.
So the radian is the measure of how close a degree is to a complete circle. * How do special right triangles directly relate to the unit circle? There are two types of special right triangle, 90, 60, 30 and 45, 45, 90. With both triangles, the angles of degrees are directly related to the x and y values on the unit circle. With the case of 90, 60, 30 and 90, 45, 45, the angles are relative to the sin of its value on the unit circle.
Liam Stephenson controlled assessment Introduction In my course work I will be looking at how the thickness of a converging lens affects the focal length. The factors involved in this experiment are: light, lens curvature, refraction and thickness of the lens, these will determine the focal length; the focal length is the length between the focus and the lens. Light-visible light is an electromagnetic wave in the electromagnetic spectrum The speed of light depending on the medium it is in, for example the speed of light is 300,000 km/s however when light travels through other medium such as water or glass the speed of light is slowed this is because water and glass is denser than a vacuum of air. Due to it being more dense and a change in speed, the direction of the wave will change this is
Also velocity of the light in a medium is inversely proportional to the refractive index of that medium. If the refractive index increases, then velocity of the light decreases. Reflection happens when light is returned back from the surface it hits. Incoming and reflected lights have the same angle as the surface. If the surface reflects most of the light then we call such surfaces as mirrors reflective.
The maximum frictional force that must be overcome before movement is able to begin is μsFN. If you apply a constant force to pull an object along a horizontal surface at a constant speed, then the frictional force opposing the motion is equal and opposite to the applied force, Fp. Therefore, Fp = Ff. The normal force is equal and opposite to the object’s weight when the object is on a horizontal surface and the applied force is horizontal. The question to be answered by performing this lab is how can the coefficient of static and kinetic friction be determined for an object on a horizontal surface?