QUESTION 1 Q1 Choose one . 5 points A moving electron has_ Only an electric field O Only a magnetic field O Both electric and magnetic fields O Neither electric or magnetic fields. QUESTION 2 Q2 Choose one . 5 points If a negatively charged insulator is placed near a neutrally charged conductor There will be a force of attraction between them. O There will be a force of repulsion between them. There will be no electric force between them.QUESTION 3 V Q3 Choose one . 5 points Three balls, each with a mass of 5kg, are positioned on the x-axis. They are located at -2 meters, 0 meters, and 1.5 meters. What is the moment of inertia if the system is rotated around the y-axis? 31.25 kgm2 17.5 kgm2 O -2.5 kgm2 0 kgm2 QUESTION 4 V Q4 Choose one . 5 points A 10 kg ball displaces 50 N of water when submerged. What is the buoyant force on the ball? O 10N O 98N O SON 490NQ5 Choose one . 5 points The blue rod is rotating around the purple axis with a constant angular velocity. If the rod was to stretch (increase it's length) without changing mass, how will the angular velocity change? the angular velocity increases the angular velocity stays the same O the angular velocity decreasesQUESTION 6 06 Choose one . 5 points A wind turbine uses energy from the wind to force a coil of wire to move in relation to a permanent magnet. This converts kinetic energy in the wind into electrical energy (electric generator). This is an example of what? Moment of inertia Magnetic domains O Static electricity Electromagnetic inductionGROUP 7 Q7 Group . 3 questions This question has multiple parts that might require information calculated in one part to be used later in the problem. If this happens I will carry any mistakes through the problem so that missing one part will not cause you to miss other parts. Question 7 A point charge with a charge of 5C is fixed at point (3m,0). A second point charge with a charge of -2 C is fixed at point (0, 1m). QUESTION 7.1 7A Response . 8 points A)What is the electric field at the origin in unit vector notation? (E=####i+####j) (Hint: be careful about the signs as they indicate direction) B U EE = Your response... D words ATTACH FILE(S) DRAG & DROPQUESTION 7.2 7B Response . 8 points If a third point charge with charge of 9 C was placed at the origin, what would be the net force on the third charge by the other two in unit vector notation. B U S Your response... 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVEQUESTION 7.3 7C Response . 4 points If the third charge had a mass of 2kg and was free to move without friction, what would be its acceleration when first released in unit vector notation? B Your response... 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVEGROUP 8 Q8 Group . 7 questions A bicycle wheel has a radius of 0.4m and a mass of 2kg. Assume the mass of the spokes are small so you can treat the wheel as a hollow hoop. QUESTION 8.1 BA Response . 4 points What is the moment of inertia of the wheel spinning around its axel? B Your response... 0 words ATTACH FILE(S) DRAG & DROPQUESTION 8.2 8B Response . 6 points If a force of 10 N is applied tangentially to the outer edge of the wheel, what is the torque on the wheel around it axel? B U Your response... 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVEQUESTION 8.3 8C Response . 8 points Assuming the wheel is free to spin without friction, what will be the angular acceleration of the wheel while this force is applied? T B S Your response.. 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVEQUESTION 8.4 8D Response . 8 points If the wheel started at rest, what will be its angular velocity after the force was applied for 5 seconds? B S Your response.. 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVEQUESTION 8.5 BE Response . 8 points What is the linear speed of the tread (outer edge) of the wheel after these 5 seconds have passed? IT U Your response.. 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVEQUESTION 8.6 8F Response . 8 points What is the rotational kinetic energy of the spinning wheel after these 5 seconds? B U S Your response... 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVEQUESTION 8.7 8G Response . 8 points The wheel is then placed on the ground and allowed to roll up a ramp. How high off the ground would it get before it stopped? Assume the wheel starts with only its rotational kinetic energy and no energy is lost when the wheel touches the ground or through friction. (Hint: Use conservation of energy) B 5 Your response... 0 words ATTACH FILE(S) DRAG & DROP Max size 4.0 GB SAVE
