True or False 1. The equivalent capacitors stores the same amount of charges but NOT THE SAME amount of energy when connected in PARALLEL. 2. A small time constant means that the capacitor charges and discharges VERY SLOWLY.  3. A good voltmeter is designed with a VERY LARGE resistance for it not to alter the voltage in the circuit when connected.

Q: A 2000-kg Ferris wheel accelerates from rest to an angular speed of 0.25 rad/s in 13 s. Approximate…

A: I = mr2/2 for a circular disk  I = 2000× 272/2  I = 729000kgm2

Q: An RLC series circuit has a 40.0 ohms resistor, a 3.00 mH inductor, and a 5.00 uF capacitor, and a…

A: GivenR = 40.0 ΩL= 3.00 mHC =5.00 μFVrms = 120 V

Q: Two long parallel wires carry currents of 2.95 A and 4.75 A. The magnitude of the force per unit…

A:

Q: 1. A 25.0 cm long spring is hung vertically from a ceiling and stretches to 29.5 cm when a 7.00 kg…

A:

Q: If a bus travelling at 24 m/s is subjected to a steady deceleration of 6 m/s2, how long will it take…

A: Given data :   Final  velocity  =   v   Deceleration   =  a  Initial velocity   =  u        To find…

Q: 2. A bouncy ball is thrown to the ground from a height of 2.0 m. The ball strikes the ground and…

A: Given Data:- Initial height of the ball is hi=2.0 m After bouncing from the ground the ball reaches…

Q: Water is flowing through a pipe of two cross sectional areas A1 and A2 lying horizontally. The…

A: Given Water is flowing through a pipe of two cross sectional areas A1 and A2 lying horizontally. The…

Q: 4. A 200 m long aluminum wire has the same resistance and cross-sectional area as a carbon wire.…

A: Write the given values with the suitable variables. Lal=200 mρal=2.65×10-8 Ω mρc=3.5×10-5 Ω m Here,…

Q: 10. A toy car is on a small indoor track, which is 100-m in circumference. The car starts from rest,…

A:

Q: All the datas are collected by myself. Which equation / method give me the best value for…

A: Here slit separation d and distance to the screen is comparable or there not much difference between…

Q: r(cm) P(mW) 2.2 D-9 15 O. 4 20 25 O. 2 3- Plot agraph between power and distance.

A: r (cm) P (mW) 5 2.2 10 0.9 15 0.4 20 0.3 25 0.2

Q: In the accompanying figure, the rails, connecting end pieces, and rod all have a resistance per unit…

A:

Q: In an experiment on standing waves, a string 67 cm long is attached to the prong of an electrically…

A:

Q: Part A Find the current through resistor a in the figure. Express your answer with the appropriate…

A:

Q: An ionic bond is formed when electrons are 1. shared. 2. destroyed. 3. split. 4. transferred.

A:

Q: A short-lived radioactive isotope has a half-life of T1/2 = 6.06 seconds. What is its decay constant…

A:

Q: A square coil of wire of side 3.85 cm is placed in a uniform magnetic field of magnitude 2.00 T…

A:

Q: Your new telescope comes with an objective lens of focal length fo = 990 mm and an eyepiece with a…

A: Given Your new telescope comes with an objective lens of focal length fo = 990 mm and an eyepiece…

Q: Q3 A square wire of side 3.0cm is placed 25cm in front of a concave mirror of focal length 10cm,…

A:

Q: A bird (m=250g) is flying through the sky at 10m/s, if the birds total energy is 1000J, what is his…

A: Given data:  Mass (m) = 250 g = 0.250 kg Velocity (v) = 10 m/s Total Energy (TE) = 1000 J  Required:…

Q: A tube 1.20 m long is closed at one end. A stretched wire is placed near the open end. The wire is…

A: Given Example : A tube 1.20 m long is closed at one end. A stretched wire is placed near the open…

Q: beam with a solid homogeneous rectangular section is simply supported at A and B. concentrated load…

A: Given B = 35 mm  D = 125 mm  Moment of inertia of rectangle = bd3/12   Hence required solution is…

Q: An advertisement claims that a centrifuge takes up only 0.127 m of bench space but can produce a…

A:

Q: iamond and lead of pencil are composed by carbon atom. however their electrical properties is…

A: Given the diamond and lead of pencil both composed of carbon atoms.

Q: What is the acceleration of car if the forward force is 500 N on a car and the friction force…

A: Given in question: Mass of car(M) = 100 Kg                                  Forward force(F) = 500 N…

Q: What is the time constant for the discharge of the capacitors in the figure? Express your answer in…

A: Given What is the time constant for the discharge of the capacitors in the figure? Express your…

Q: An airport is located  54  feet above sea level. Write a signed number to represent this elevation.

A: The altitude above the sea level or below the sea level is represented by using the negative or…

Q: The orbital velocity for a sattelite orbiting  earth at it's radius is 8 km/s. What would be the…

A:

Q: 1. Given v = vj and v = - vzj, find the magnetic force by q, on q2. The answer must be in vector…

A:

Q: What must the charge (sign and magnitude) of a particle of mass 1.43 g be for it to remain…

A:

Q: 11 Data double convex lens (converging lens) f=Scm d=+20cm a>Ifthe object before the focus of the…

A: focal length (f) = 5 cm object distance (do) = 20 cm

Q: Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure…

A:

Q: What is the weight of the 70 kg object on th surface of moon?

A: We know that the acceleration of gravity on the moon's surface is 1/6 of the acceleration of gravity…

Q: A very long straight wire has charge per unit length 1.46×10−10 C/m. At what distance from the wire…

A:

Q: c) Draw the field lines for the following i. M ii. +q d) Suppose a man whose mass is 90kg jumps on…

A: ( c ) We have to draw field lines for question i & ii  ( d )  Given  Mass of the man  90 kg…

Q: An element makes up 0.0021% of the Earth's continental crust by mass. Express this in ppm (parts per…

A: Percentage of element in earth crust  =  0.0021%

Q: You completely fill a 4L stockpot with water at 20°c, cover it with lid, then heat it just to the…

A:

Q: A golf ball of mass m = 0.11 kg is dropped from a height h. It interacts with the floor for t =…

A:

Q: Write a JAVA program that keeps asking the user for numbers, until the user enters 0. After the user…

A: In the program written by you , a line of code is missing - System.out.print("Enter a num:");…

Q: In the fusion reaction }H + H →¿He + ¿n, he masses of deuteron, helium and neutron express ed in amu…

A: Nuclear fusion is a reaction in which two or more atomic nuclei are combined to form one or more…

Q: A merry-go-round accelerates from rest to 0.63 rad/s in 33 s. Assuming the merry-go-round is a…

A:

Q: otarting with a real object, answer the following statements (True or False) about the image formed…

A: diverging lens always produce virtual image, upright and reduced image. irrespective of object…

Q: Prove the relation that Hammer blow = ± mb x r*x ω2 where mb = Balancing mass placed at a radius of…

A: A hammer blow is a vertical force that alternately adds and subtracts weight from a locomotive's…

Q: 7- EXAMPLE 23-13 Object close to converging lens. An object is placed 10 cm from a…

A: Given that, Object distance (u)= -10 cm Focal length (f)= 15 cm Let the image distance be v

Q: 2. A block of mass m = 4.60 kg is released from rest from point circled A and slides on the…

A: In this question we have to find the speed of the block at points B and C. Please give positive…

Q: Two curling stones collide on an ice rink. Stone 1 has a mass of 16 kg and an initial velocity of…

A:

Q: Calculate the wavelength of a 20-Hz wave. Calculate the wavelengths in air at 20° C for sounds in…

A: Temperature = 20o C speed of sound in air = 343 ms

Q: A man strikes one end of a thin rod with a hammer. The speed of sound in the rod is 17 times the…

A:

Q: The formular for the velocity of centre of mass is given by: O A 2(v,+v2) + m OB. mr.+ m r + m D. +…

A:

Q: The equation of a transverse wave on a string is y = (2.8 mm) sin[(20 m 1)x + (320 s1)t] The tension…

A:

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.