A student is trying to build a home-made capacitor. He uses two 1.0 cm x 1.0 cm aluminum foil as the two parallel conducting plates, spaced 0.40 cm apart. He then connects the two foils with a 3.0 V battery. To increase the capacitance, he places a stack of paper (k = 3.6) in between the space and able to decrease the space between the two foils from 0.40 cm to 1.0 mm with the battery still connected. What is the change in energy of the capacitor?

Q: A car's outside rear-view mirror is convex, with a focal length of -1,0 m. In the mirror you see a…

A: Focal length of convex mirror is Object height is Object distance is Find:The image distance and…

Q: A mass m1= 3kg slides down slippery ramp, reaching a speed v=9 m/s at the bottom. After reaching…

A: a) initial kinetic energy converted potential energyputting v = 9m/s, g =9.8m/s2

Q: Could you rewrite this better with equations you need to use to get this answer.

A: So we have given a thermos bottle  which contains 3.0 kg of water and 2.0 kg of ice in thermal…

Q: Two electric charges Qa=-2.7μC and Qb 22μC are initially located To =80cm apart. Calculate the work…

A: The initial potential energy of the system is given by the final potential energy of the system is…

Q: Two particles of mass m₁ = 1.4 kg and m₂ = 2.6 kg are traveling with velocities V₁ = 4.6 m/s, and v₂…

A: Two particles of mass m1 = 1.4 kg                                    m2 = 2.6 kgvelocities v1 = 4.6…

Q: A horizontal spring with spring constant 210 N/m is compressed by 15 cm and then used to launch a…

A:

Q: A grinding wheel is in the form of a uniform solid disk of radius 7.02 cm and mass 1.91 kg. It…

A:

Q: Review Conceptual Example 7 before starting this problem. A uniform plank of length 5.0 m and weight…

A:

Q: Six insulated containers hold 3,375 g of water at 24°C. A small copper cylinder is placed in each…

A: The objective of the question is to rank the containers according to the maximum temperature of the…

Q: An ideal gas is confined to a constant volume container and heated from a pressure of 1 atm at room…

A:

Q: A 2.00-cm-tall object is 18.0 cm in front of a converging lens with a focal length of 26.0 cm.…

A: Object distance is Height of object is Focal length of converging lens is Object is placed in front…

Q: star, A planet orbits a star, in a year of length 2.64 x 107 s, in a nearly circular orbit of radius…

A:

Q: Problem 2. In figure below, two semicircular arcs have radii b = 7.50 cm and a = 3.5 cm, carry…

A:

Q: You have a diverging mirror of focal length 10cm and an object of height 18cm. Where should you…

A: See below

Q: Light of wavelength 690 nm falls on two slits and produces an interference pattern in which the…

A:

Q: We are going to measure the buoyant force as a function of the volume submerged using a wooden…

A:

Q: A system of two objects has AKtot = 7 J and AUint = -4 J. ▼ Part A How much work is done by…

A: total change in kinetic energy =total change inpotential energy =

Q: What is the equivalent capacitance of the circuit? 2 F O 0.67 F O 15 F O 3.7 F 4.5 F 3 F IH HUH 1 F…

A:

Q: Boiling water was placed in a freezer maintained at a temperature of -15 degrees Celsius to have the…

A:

Q: Two force vectors are given P = î+2ĵ+4k, and Q = 5î+8ĵ-2k. If the displacement vector is D =…

A: Two forces vectors,                 The displacement vector is given by,                 We need to…

Q: There is a planet X that has a mass that is 24 times that of the earth and 4 times the earth's…

A:

Q: Two solenoids are one inside the other. The current in the inside coil decreases at a uniform rate.…

A:

Q: 1) White light is incident on a single pane window at an angle of 30° to the normal. The index of…

A: Given Data:The incidence angle is The index of refraction of glass is The index of refraction of air…

Q: How do you calculate the buoyant force when given:  Tension of wooden block on spring scale:…

A: So we have given the tension of wooden block on spring scale i.e 0.6217N means it is weight of…

Q: answer remaining parts   Part (d)  What would the angle (in degrees) be for the 682 nm line?  Part…

A: We have given the wavelengthSo wavelengths are:λ1 = 403 nm λ2 = 428 nmλ3 = 511 nmλ4 = 682 nmGiven a…

Q: A line of charge is placed along the negative x axis form x=-0.4m to x=0. The charge is uniformly…

A:

Q: A 0 0 0 0 1 1 1 1 A B B 0 0 1 1 0 0 1 1 B + C C 0 1 0 1 0 1 0 1 B+C A(B+C)potion A(B+C)

A:

Q: water n = 19m calculate fir A r FH Th 3m 4m 3h

A:

Q: A 14.0 m uniform ladder weighing 490 N rests against a frictionless wall. The ladder makes a…

A:

Q: A boy of mass 52.0 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.3 m/s.…

A: Given:Mass of body : 52 kgMass of skateboard : 2.00 kgInitial speed of system (body + skateboard) :…

Q: A 45.0-kg skater is traveling due east at a speed of 2.50 m/s. A 70.0-kg skater is moving due south…

A: Page 1

Q: A red laser (λ = 656 nm) is incident on a diffraction grating that has n = 1100 lines per cm.…

A: A red laser (λ = 656 nm) is incident on a diffraction grating that has n = 1100 lines per cm.We have…

Q: In the figure, a long straight wire carries a current i₁ = 28.5 A and a rectangular loop carries…

A: The current in the wire is The current in the rectangular loop is The distance a is The distance b…

Q: A baseball (m= 150 g) approaches a bat horizontally at a speed of 43.9 m/s (98.2 mi/h) and is hit…

A:

Q: these are wrong

A:

Q: Four identical bulbs, each with a filament resistance of 83 , are connected to a 40-V battery as…

A: Resistance = R = 83 ohmPotential difference = Vs = 40 volt.

Q: A convex lens forms an image of a 12 cm tall soda can. The image is 2.8 cm tall and appears 8.8 cm…

A: height of object = 12 cmheight of image = 2.8 cmdistance of image = 8.8 cm from lens

Q: Shown here is a rod of length = 1.45 m and mass m = 678 g that is pivoted at one end. Centered on…

A:

Q: A 220 g block on a 60.0-cm-long string swings in a circle on a horizontal, frictionless table at…

A: Mass of block  m= 220g = 0.22kg Length of string R = 60cm = 0.60m R. P. M = 65 = w

Q: A 10 kg runaway grocery cart runs into a spring with spring constant 240 N/m and compresses it by 62…

A:

Q: The radius Rhand mass M₁ of a black hole are related by Rh = 2GMn/c², where c is the speed of light.…

A: Given :The radius Rh and mass Mh of a black hole are related as Rh = Distance ro from the center =…

Q: 6. A 0.030-kg bullet is fired vertically into a 0.15-kg metal sphere that is initially at rest. If…

A:

Q: A truck has tires with a radius of 40.0cm. If the vehicle is driven 80,000 km (80,000,000 m) before…

A: if a car travels certain distance after the wheel completes N number of revolutions then the number…

Q: Three nonparallel, nonzero forces act on the rigid body shown. What must be true for this body to be…

A: For the given force system, we need to determine the choice for the object to stay in equilibrium.

Q: wo astronauts, one of mass 60 kg and the other 90 kg, are initially at rest together in outer space.…

A: Mass, m1 = 60 kgMass, m2 = 90 kgDistance moved by lighter astronaut is 12 m.

Q: A river flows in the direction due north. The speed of the current is 5 km/hr. A boat with a speed…

A:

Q: A 3650-kg open railroad car coasts at a constant speed of 9.00 m/s on a level track. Snow begins to…

A:

Q: ases, does it take longer or shorter to make one complete o

A: The frequency of oscillation decreases. We need to tell whether it takes longer or shorter to make…

Q: In exercise physiology studies, it is sometimes important to determine the location of a person's…

A: Force at the initial end is Force at the final end is Distance between scales is Find:Position of…

Q: A 10-cm tall object is positioned 20 cm from a spherical convex mirror with a radius of curvature…

A: Radius of curvature of convex mirror is Height of object is Object  is placed 20 cm from the mirror.

Dielectric Constant Of Water

Water constitutes about 70% of earth.  Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.

Electrostatic Potential and Capacitance

An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.