Physics question and answers for July 22, 2023
- Q In this problem the goal is to explore how charge density, totalcharge,and the differential charge elements are related.Consider a sphere of radius R with p = ar^2 + br where...
- Q A 1.0 toaster and a 2.0 lamp are connected in parallel with the110-V supply of your house. (Ignore the fact that thevoltage is AC rather than DC.)(a) Draw a schematic...
- Q Draw a position-vs-time, velocity-vs-time, andacceleration-vs-time graph for each of the following objects:1. A car traveling in a straight line at a constant speed.2. A ball rolling down a hill, getting...
- Q how many individual polarizers would you need to rotate a laserbeams polarization axis by 90 degrees and lose only 5% intensity?what would be the relative angle between each polarizer
- Q There are A, B and C, three plastic balls, A and B, B and C, Cand A are attracted to each other, if A is positive: Group ofanswer choices1. Both...
- Q A 0.158 kg glider is moving to the right on a frictionless,horizontal air track with a speed of 0.900 m/s . It has a head-oncollision with a 0.297 kg glider...
- Q A volleyball is spiked so that its incoming velocity of +4.1 m/sis changed to an outgoing velocity of -16 m/s. The mass of thevolleyball is 0.34 kg. What impulse does...
- Q Suppose you hear a car approaching and its horn is heard as a3037. Hz tone. After passing, you hear 2430. Hz. (a) What was theMach number of the car?
- Q thetotal momentum (linear momentum) is conserved in any collision, notits _________ energy, but its total energy is conserved.In the ballistic pendulum shown in the conservation of linearmomentum lesson, if the...
- Q A Dewar bottle is a double-walled glass container whose interiorhas been made empty. These containers are generally used toconserve substances at very low temperaturesa) If the vacuum pressure is 1.00...
- Q Calculate the average speed, collision frequency, average freetravel and the total number of shocks for 1 mole of nitrogen foundin a 0.5 L container at a temperature of 280 K....
- Q Calculate the proportion of atoms on the surface atomic layer ofAg spheres with the diameters below given that the thickness of thesurface atomic shell is 0.289 nm, stating any assumptions...
- Q Indigenous people sometimes cook in watertight baskets byplacing hot rocks into water to bring it to a boil. What mass of500°C granite must be placed in 4.00 kg of 15.0°C...
- Q Design a \"bungee jump\" apparatus for adults. A bungee jumperfalls from a high platform with two elastic cords tied to theankles. The jumper falls freely for a while, with the...
- Q STEP 1: Get 2 sheets of 8½ by 11 paper and 2 sheets of aluminumfoil. You will need to cut the aluminum foil so that both sheetsare 8½ by 11.STEP...
- Q There is a circle with a smaller circle inside of it. What's theelectric field for the hollow sphere, with an inside radius 'a' andoutside radius 'b?'1. r > b2. r...
- Q A gas expands from point A to B. The expansion consists of twostages.Stage 1) The gas expands at constant pressure from 15 to 39litres.Stage 2) The gas expands from 31...
- Q Draw a circuit with a battery of 90 V is connected to fourresistors, R1 =10 Ω, R2,= 20 Ω , R3 =30 Ω andR4= 40 Ω, as follows. Resistors R1...
- Q Youplace a proton at point P and release it. The proton is constrainedso that it can only move along the y axis. How fast will it bemoving when it is...
- Q Chapter 6:What is electric and magnetic force?What is the application for electric and magnetic force?What is electric current and how digital devices work?How do we store electrical energy?How microphone works?How...
- Q The magnitude of the repulsive force between two ions, A1+ andB1- at equilibrium is 0.0000000094 N.  Determine (a) theinterionic distance (nm), (b) the ionic radius of B (nm)1- if thatfor A1+...
- Q A ball is tossed vertically upward from a window, height 50.0 mabove the ground. The initial speed of the ball is 25.0 m/s. Theball goes up and comes down, landing...
- Q A 91.0-kg fullback running east with a speed of 5.20 m/s istackled by a 95.0-kg opponent running north with a speed of 3.00m/s.(a) Explain why the successful tackle constitutes a...
- Q Answer the situations below USING PHYSICS EXPLANATIONS1. If a tree falls in the woods and no one is there to hear it,does it make a sound?2. If my Grandfather clock...
- Q A 200.0 g aluminum calorimeter contains 600.0 g of water at 20.0°C. A 100.0 g piece ofice is cooled to −20.0 °C and then placed in the calorimeter. Usethe following...
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