Figure Q17.20 shows the electric field lines outside several Gaussian surfaces, but does not show the electric charges inside. In which cases is the net charge inside positive, negative, or perhaps zero? How do you know?Figure Q17.20

Q: A small object with ?=0.0250kg is moving in the positive x-axis with velocity ??=12.0m/s. What const...

A: K.E=12mv2 Work done = F*d F=force d=displacement m=0.0250 kg d=0.15 m v=12.0 m/s

Q: Suppose that a uniform magnetic field points out of this sheet of paper. If a positively charged par...

A:

Q: The potential difference across a resting neuron in the human body is about 76.0 mV and carries a cu...

A: The potential difference across a resting neuron in the human body is V = 76.0 mV = 76.0x10-3 V. The...

Q: Force Vectors Use interior String Number Mass Attached (kg) Force Exerted (N)  Direction (°) 1 ...

A: given:mass m1=250g = 0.250 Kgmass m2 = 250 g = 0.250 Kgmass m3 =350 g = 0.350 Kg direction: from pos...

Q: Four masses are located in the corners of the square. Find the magnitude and direction gravitational...

A: Given data: The mass, m1=85 kg. The mass, m2=3kg. The mass, m3=3 kg. The mass, m4=85 kg. The distan...

Q: A student using an air track with two carts records the result of an inelastic collision. One cart h...

A: Given data: The mass 1st cart is m=0.2 kg The mass of the 2nd cart is M=0.4 kg The speed of the two ...

Q: Answer D only

A:

Q: The driver of a car that is travelling at 46.1 km/h slams the breaks and comes to a complete stop in...

A:

Q: 6- A particle is moving eastwards with velocity of 5 m/sec. In 10 sec the velocity changes to 5 m/se...

A:

Q: Fig. 13. Atomic Energy Level Example An electron with energy-1.5 eV loses energy and radiates light ...

A:

Q: 2. A train has a 500,000 kg engine towing 20 cars on a level track. Each car has a mass of 100,000 k...

A: When multiple objects are coupled together to an engine or truck, the force on one object is affecte...

Q: A 9.9-kilogram cart initially at rest on a floor is acted on by a net horizontal force of 25.1 newton...

A: Given data: Mass of cart is, m=9.9 kg. Initial speed of cart is, u=0 m/s        (As cart was initial...

Q: Suppose you wish to fabricate a uniform wire out of 1.05 g of copper. If the wire is to have a resis...

A:

Q: Which combination of units expresses density

A: The density of material is defined as the ratio of mass to the volume of the material. 

Q: A copper wire has a length of 34.0 m and a resistance of 3.60 2 at 20.0°C. Assuming a circular cross...

A: Length of wire (L) = 34 m Resistance (R) = 3.60 ohm Temperature (T) = 20oC Resistivity of copper = 1...

Q: What period would you expect from a pendulum of length 0.5 m on the moon where 9= 1.6 m/s²?

A:

Q: Solve numbers 1 and two in the attached figure.

A: The two metal plates of a parallel capacitor are as shown above. The electric field lines have a dir...

Q: A ball is dropped from a height of57.3 meters, how long (in seconds) does it take to his the ground?

A: H= 57.3 m take g=10 m/s2 let time taken to hit the ground =t   

Q: 2. Find the equivalent resistance between A and B. 11 ohm 10 ohm 10 ohm A

A: The given problem can be solved using Star to Delta conversion.  A combination of given resistors in...

Q: (a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible an...

A: Given : Initial speed (v)= 110 km/hr => 110 x 5/18 = 30.55 m/s  mass of car (m) = 750 kg Slope 2....

Q: A light spring of constant 171 N/m rests vertically on the bottom of a large beaker of water.A 5.87 ...

A: Given data  Spring constant k=171 N/m The mass of the wooden block m=5.87 kg The density of wood ρw...

Q: A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed o...

A: Given: Speed Vo= 20.5 m/s Height h= 53 m

Q: A low noise 3  stage cascaded power amplifier is to be used in a typical low noise communication rec...

A: Write the given values of this problem: G1=31 dBBandwidth(B.W)=1.5 kHzG2=20 dBTe2=484 deg KG3=13 dBF...

Q: A long wire with a radius of 0.350 cm carries a current. The potential difference across a 3.50 m lo...

A: From the question it is given that:  Radius of wire: r = 0.350 cm = 3.5 x 10-3 m Potential differenc...

Q: Find the potential difference between point a and point b for the situation shown below. Here e, 12....

A: Analyze the circuit diagram.

Q: Physics Question

A: The time period of the planet M  is the time taken by the planet M to revolve around the sun .      ...

Q: In the figure below, the net external force on the 28 kg mower is given as 59 N. Fnet If the force o...

A: Mass of mower (m) = 28 kg Net force = 59 N Frictional force = 26 N    

Q: prove

A:

Q: 10. The relationship between voltage (V) and current (I) was discovered by:a. Newton  c. Ampereb. Oh...

A: Voltage and current are terms used related to the electrostatics. Voltage is the the electromagnetic...

Q: Answer the question below: Using dimensional analysis, prove that the expression v = at is correct.

A: Given equation is v=at Here, v is the velocity, a is the acceleration and t is the time. The dimensi...

Q: A Consider the frictionless ABC rail shown in the figure. A block of mass m1 = 5 kg is released from...

A: Given : m1 = 5 kg m2 = 10 kg h = 5 m

Q: A uniform magnetic field points into the page. The square current loop shown is rotated in this fiel...

A:

Q: an object at a distance of 51 cm from a concave lens has a focal length of 81 cm, so it has an image...

A:

Q: Q3/ Two-point charges Q1= - 5 mC and Q2= +50 µC are separated by a distance of 15 cm. the electric f...

A:

Q: The driver of a car that is travelling at 9.3 km/h slams the breaks and comes to a complete stop in ...

A:

Q: In the arrangement of the first figure, we gradually pull the block from x = 0 to x = +3.0 cm, where...

A:

Q: Newton's third law

A: Explain the Newton's third below.

Q: A kg ball and a 2.0 kg ball are connected by a 2.5-m-long rigid, massless rod. The rod and balls are...

A:

Q: A quarterback throws a football toward a receiver with an initial speed of 11 m/s at an angle of 30°...

A:

Q: v (m/s) 20아 20 30 40 10 (s) -20- An object begins at position x = 0 and moves one-dimensionally alon...

A: we are given a velocity vs time graph for t=0 to t= 40 s .   Area under v vs t graph : Area under th...

Q: 14 :- 2 Describe spring force (Forine) in your own words

A:

Q: If you know that the ratio between (the distance between the slit and the screen) to d is equal to (...

A: In the double-slit constructive interference, the distance between the third bright fringe and the c...

Q: Q3/ A rest particle was accelerated by a circular path of radius 7 m, according to equation a=9t³-6t...

A:

Q: Derivation of the third Max Weil equation 3:13 AM/

A:

Q: The figure below shows a capacitor, with capacitance C = 7.72 µF, and a resistor, with resistance R ...

A:

Q: A stone is dropped from the top of a cliff. The splash it makes when striking the water below is hea...

A:

Q: The non-sinusoidal waves which represent a sum of infinite number of harmonic waves can affect on El...

A: Non sinusoidal waves are not as the sine wave. They are of different shape like triangle, square, re...

Q: State Newton's law of motion

A: There are 3 Newton's Laws of motion as below Newton's First law of motions: A body at rest remains a...

Q: 1. What is the inductance of a coil if the coil produces an emf of 2.90 V when the current in it cha...

A:

Q: A long straight wire placed vertically through which an electric current of intensity 15Amp passes u...

A:

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.