Physics Homework Aid
Physics holds significant importance among the natural sciences, elucidating life's wonders and ranking among the most challenging subjects to master.
QuestionAI is a rich and user-friendly physics problem solver for novice physicists, enabling exploration of atomic properties and interactions, alongside molecular trajectories under various forces. Furthermore, you can delve into the mysteries concealed amidst galaxies with fellow physics enthusiasts. Boldly pose your conjectures and queries to the AI, and authoritative answers will readily emerge.
- 2. A shopper in a supermarket pushes a cart with a force of 20 N. Find the work done (in Joules)by the shopper on the cart as the shopper moves along a 40 m length of the aisle.
- 18. Speed velocity,or acceleration? Monarch butterflies fly 12 mihr south as they migrate.
- Unless otherwise indicated, whenever a numerical value of gis required, take Answer ALL questions. g=9.8ms^-2 and give your answer to either 2 significant figures or 3 significant figures. A beam AB is supported by two vertical ropes, which are attached to the beam at points P and Q,where AP=0.3 m and BQ=0.3m The beam is modelled as a uniform rod, of length 2 m and mass 20 kg. The ropes are modelled as light inextensible strings. A gymnast of mass 50 kg hangs on the beam between P and Q. The gymnast is modelled as a particle attached to the beam at the point X, where PX =xm,0lt xlt 1.4 as shown in the diagram above. The beam rests in equilibrium in a horizontal position. (a) Show that the tension in the rope attached to the beam at P is (588-350x)N (3) (b) Find, in terms of x, the tension in the rope attached to the beam at Q. (c) Hence find,justifying your answer carefully, the range of values of the tension which could occur in each rope. Given that the tension in the rope attached at Q is three times the tension in the rope (d) find the value of x. (3)
- 7. A freight train rolls along a track with a momentum p. Another freight train rolls with the same velocity, but has twice the mass of the first train How does the momentum of the second train compare to that of the first train? (Neglect friction] It is four times as much. It is twice as much. It is zero It is unchanged.
- When a6 gram mass is attached to a spring hanging vertically, the spring is stretched to a total length of 24 centimeters. When a 10 gram mass is attached to the spring (and only the 10 gram mass), the spring is stretched to a total length of 36 centimeters. What is the total length of the spring when a 12 grammass is attached to it? Elimination Tool Select one answer A 18cm 15 cm B 36 cm D 30 cm E 42cm