
There is an electric field at a certain point P, where initially there is no charge. A pointlike object is placed at point P, and a force on the object is observed. Next the object is removed and another pointlike object is placed at the same point.

q1= 25 pC q2 = 75 pC A) calculate the magnitude of the electric force between the two charges B) Is the force attractive or repulsive? C) calculate the magnitude and direction of E1 *( there is an arrow above E1) , the electric field at the orgin due to

A proton traveling at a speed 1.0*106 m/s of enters the gap between the plates of a 2.0cmwide parallelplate capacitor. The surface charge densities on the plates are 1*10^6 C/m2. How far has the proton been deflected when it reaches the far edge of the

Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the

Two students are on a balcony 18.3 m above the street. One student throws a ball (ball 1) vertically downward at 12.2 m/s; at the same instant, the other student throws a ball (ball 2) vertically upward at the same speed. The second ball just misses the


A textbook of mass 1.95 kg rests on a frictionless, horizontal surface. A cord attached to the book passes over a pulley whose diameter is 0.100 m , to a hanging book with mass 3.08 kg . The system is released from rest, and the books are observed to move

Suppose that, in the future, observations with some new telescope reveal a planet about 16 AU from a star whose mass is the same as our sun's mass. How long does it take the planet to orbit the star? Use Keplers law. You know at 1AU the period is 365

A uniformly charged straight wire (radius a) has linear charge density lambda. The wire is coated with a dielectric material chi with external radius b. I need to find the electric field everywhere and the volume and surface bound charge distrobutions but

A thin rod L = 9.0 cm long is uniformly charged and has a total charge of 4.4 nC. Find the magnitude of the electric field at a point P located at a distance R = 13.5 cm from the center of the rod when: (a) The point P lies along the axis of the rod

If a rocket traveled at 9*10^4 miles per hour . How long would it take to reach the moon from the planet.The moon is 6.3*10^5 miles from the planet it orbits.

the electric force between Q1 and Q2 is 1.2 going to left. determine the distance between the two charges, and the electric field, E1 and E2, of the electric charges if Q1 is 6 x 10^6 C, Q2 is 4 x 10^6 and test charge of +1 x 10^6 C

Two point charges are placed on the x axis. (Figure 1) The first charge, q1 = 8.00nC , is placed a distance 16.0m from the origin along the positive x axis; the second charge, q2 = 6.00nC , is placed a distance 9.00m from the origin along the negative x

The electric field intensity at a point 2 meters from the surface of a uniformly charged conducting sphere is 1920 N/C. At a point 4 meters from its center, the electric field intensity is 3000 N/C. a.) Determine the radius of the sphere. Determine the

If the total positive charge is Q = 1.62×10−6C , what is the magnitude of the electric field caused by this charge at point P, a distance d = 1.53m from the charge? (Figure 1) Enter your answer numerically in newtons per coulomb.

The shape of a magnetic field about a currentcarrying wire is much the same as the shape of an electric field ____________. A) All of these.B) None of these.C) about a point electric charge.D) between two opposite point charges.E) between the plates of a


what is the electric flux through a sphere that has a radius of 2.2m and carries charge of 5.3 micro couloumb at its centre? solution

A particle with a mass of 3.65×10^−24 kg and a charge of 6.40×10^−19 C starts at rest and is accelerated for a distance of 0.102 m through a uniform electric field having strength E = 7.25×10^4 N/C. What is the resulting speed of the

Air molecules create an upward force that impacts the free fall of objects on the surface of the Earth, differing form the way an object would fall in vacuum. Question: What kind of objects should be used for experimentation if we want to limit the impact

A charge +q is at the origin. A charge 2q is at x = 6.30 m on the +x axis. (a) For what finite value of x is the electric field zero? (b)or what finite values of x is the electric potential zero? (Note: Assume a reference level of potential V = 0 at r =

Three point charges, A = 2.2 µC, B = 7.5 µC, and C = 3.9 µC, are located at the corners of an equilateral triangle . Find the magnitude and direction of the electric field at the position of the 2.2 µC charge. magnitude = . N/C direction =

The ride drops riders from the top of a tall tower and let's them free fall for a short time before bringing them to a stop. For the riders' safety, you must make sure the riders do not experience an acceleration greate than 2g. Assume the riders have a

An electric charge q creates a field of 4500 N/C at a point d away from the charge. The potential at that point is +1800V. Determine q and d. Do you have to use the formula E=kQ/r^2 or something else? I'm lost on how to solve it

describe the surface of a planet using the 5 senses (year 7)....

A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9×107m . The magnitude of the gravitational force exerted on the satellite by the planet is 140N . Part A What would be the magnitude of the gravitational force exerted

On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The freefall acceleration on the moon is 1/6 of its value on earth. Suppose he hits the ball with a speed of 25 m/s at an angle of 28°


Why in free fall condition the length of water column in capillary tube is equal to length of tube?h=2Tcos theta /drg where h is rise in? height ,T=SURFACE TENSION d=DENSITY r=RADIUS OF TUBE AND g=ACCELERATION DUE TO GRAVITY explain from this formula how

Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q

Two point charges +4q and +q are placed 30 cm apart. At what point on the line joining them is the electric field zero? (a) 15 cm from charge 4q (b) 20 cm from charge 4q (c) 7.5 cm from charge q (d) 5 cm from charge q

On your first trip to Planet X you happen to take along a 200g mass, a 40.0 cm long spring a meter tick and a stop watch. You're curious about the acceleration due to gravity on Planet X, where ordinarty tasks seem easier than on earth, but you cant find

A particle with a mass of 3.65×10−24 kg and a charge of 6.40×10−19 C starts at rest and is accelerated for a distance of 0.102 m through a uniform electric field having strength E = 7.25×104 N/C. What is the resulting speed of the particle?

The surface shown is a square and has a side length of 14.0 cm. The electric field acting on this area has a magnitude of 180. N/C at an angle of 27.5°. Calculate the electric flux through the shown surface.

what is the electric force exerted on a test charge of 3.86 x 10^5 C if it is placed in an electric field of magnitude 1.75 x 10^4 N/C ?

On a clear day, the Earth’s atmospheric electric field near the ground has a magnitude of 100 N/C and points vertically down. Inside the ground, the electric field is zero, since the ground is a conductor. Consider a mathematical box of 1.0 m x 1.0 m x

This is the situation I have been given: You are given three capacitors, one with a capacitance of 0.025 microfarads, another with a capacitance of 0.05 micro farads, and the third with a capacitance of 0.015 microfarads. Using only these capacitors,

Important support for General Relativity came from studies of the precession of the orbit of....what planet? It wasn't precession, it was rotation of the major axis direction of the elliptical orbit, also called "perihelion shift". The planet was Mercury.


A nonconducting ring of radius R with a uniform charge density λ and a total charge Q is lying in the yz  plane, as shown in the figure below. Consider a point P, located at a distance x from the center of the ring along its axis of symmetry. 1)

A 49kg lead ball is dropped from the leaning tower of Pisa. The tower is 54 m high. (a) How far does the ball fall in the first 2.4 seconds of flight? (b) What is the speed of the ball after it has traveled 4.1 m downward? (c) What is the speed of the

Three charges q1, q2 and q3 lie along the xaxis. Charge q1=2.5 micro coulomb is at x= 1.5 m, while charge q2= 6.3 micro coulomb is at the origin. Where must the third charge q3 be placed on the axis so that the resultant force on it is zero?

A planet is 2.45 x 10^9 km away. How long would it take in hours to travel to the planet at the speed of light? (speed of light is 2.998 x 10^8 m/s)

Imagine a landing craft approaching the surface of Callisto, one of Jupiter's moons. If the engine provides an upward force (thrust) of 3270 N, the craft descends at constant speed; if the engine provides only 2190 N, the craft accelerates downward at 40

What is the electric field intensity produced by a charge at 10 meters, where the electric potential is 1.44 volts?

A 2 μC charge is placed at × = 1 m while a second 2 μC Charge is placed at x=1. Find (a) the electric field at y = 0.5 m, and (b) the electric force a 3 μC charge placed at y=0.5 m.

A body of mass 20kg is transferred from earth (grams=weight newton kg) to another planet where G=2 Newton kg, 1.Wat is the mass on earth? 2.wat is the wieght on earth? 3.wat is the mass on the other planet? 4.wat is the weight on the other planet?

A body of mass 20kg is transferred from earth (grams=weight newton kg) to another planet where G=2 Newton kg, 1.Wat is the mass on earth? 2.wat is the wieght on earth? 3.wat is the mass on the other planet? 4.wat is the weight on the other planet?

t a NASA research center freefall research is performed by dropping experiment packages from the top of an evacuated shaft 156 m high. Freefall imitates the socalled microgravity environment of a satellite in orbit. What constant acceleration would be


A 1.98 109 C charge has coordinates x = 0, y = −2.00; a 2.73 109 C charge has coordinates x = 3.00, y = 0; and a 4.95 109 C charge has coordinates x = 3.00, y = 4.00, where all distances are in cm. Determine magnitude and direction for the

Your spaceship lands on an unknown planet. To determine the local value of g, you ask a steeltoed crew member to kick a stone, and you find that if she kicks it at 18.0m/s at various angles, the maximum range she can achieve is 30.8m. What is g on this

A thin, horizontal 20cm×20cm copper plate is charged with 1.7×10^10 electrons. Consider the electrons are uniformly distributed on the surface. A. What is the strength of the electric field 0.1 mm above the center of the top surface of the plate? E=____

An alpha particle (helium nucleus, charge +2e) starts from rest and travels a distance of 1.88 cm under the influence of a uniform electric field of magnitude 12.2 kV/m. What is the final kinetic energy of the alpha particle?

We have an infinite, nonconducting sheet of negligible thickness carrying a uniform surface charge density +σ=7.00e6 C/m2 and, next to it, an infinite parallel slab of thickness D=17 cm with uniform volume charge density ρ=−4.94e5 C/m3

1. Three particles with charges of +11 mC each are placed at the vertices of an equilateral triangle with sides of 15.0 cm. What is the magnitude and direction of the net force on each particle? 2. A proton is released in an uniform electric field and it

I am doing a project on the planet uranus and I need a map showiong the path to my planet that i have chosen. The picture of the path must include asteroids, comets or other interesting objects. I am having so much trouble looking for such a picture. I

A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9×107m . The magnitude of the gravitational force exerted on the satellite by the planet is 140N What would be the magnitude of the gravitational force exerted on the

A satellite circles a spherical planet of unknown mass in a circular orbit of radius 1.9×107m . The magnitude of the gravitational force exerted on the satellite by the planet is 140N . What would be the magnitude of the gravitational force exerted on the

If you place a free electron and a free proton in the same electric field, how do the forces acting on them compare? How do their accelerations compare? Their directions of travel? My answer: Direction of travel: The proton and electron would move towards


Two point charges, q1 and q2, are placed 0.30 m apart on the xaxis, as shown in the figure above. Charge q1 has a value of –3.0 x 10–9 C. The net electric field at point P is zero Q: Calculate the magnitude of charge q2. Q: Calculate the magnitude of

At a place directly below a thundercloud, the induced electric charge on the surface of the Earth is +1.0 X 〖10〗^(7) coulomb per square meter of surface. How many singly charged positive ions per square meter does this represent? The number

The acceleration of an electron in an electric field with a strength of 7.0 N/C is?

A proton is projected in the positive x direction into a region of uniform electric field E = (6.80 * 10^5 N/C at t = 0. The proton travels 6.80 cm as it comes to rest. (a) Determine the acceleration of the proton. thanks

A proton is projected in the positive x direction into a region of uniform electric field E = (6.80 * 10^5 N/C at t = 0. The proton travels 6.80 cm as it comes to rest. (a) Determine the acceleration of the proton. thanks

A newly discovered planet is found to have a circular orbit, with a radius equal to 11 times the radius of Earth's orbit. How long does this planet take to complete one orbit around the Sun?

a planet orbits a star with period T. As seen from that planet the star's diameter subtends an angle of theta radians. Show the density of the star is given by rou=24pi/G(T^2)theta^3 please help!!!

the distance of a planet from its sun is 19000000 miles. if there are 29400000 seconds in one orbit, find the speed of the planet in its orbit about the sun. (assume a circular orbit)

An electric dipole (any pair of oppositely charge point particles) lies on the xaxis, consisting of a  2.5nC charge at x = 10 cm, and a +2.5nC charge at x=10cm. Find the electric field (a) on the xaxis, at the point (20,0) and (b) on the yaxis, at

A perfectly spherical, but squishable ball of radius 10 cm is blown up to an internal pressure of 2 atm. The ball is placed between two perfectly vertical walls and the walls are slowly squeezed together. Initially the ball slips down the walls, but when


A newly discovered giant planet has an aver age radius 12 times that of the Earth and a mass 722 times that of the Earth. Calculate the ratio of the new planet’s den sity to the Earth’s density.

1. At opposition, Nursat(is observed to be in opposition every 374 days.) is observed to subtend an angular radius of 7.1523 arcseconds. Use this and the conversion factors in our Table of Constants to find the radius of Nursat in km. 2. Nursat has a moon,

A loaded elevator with very worn cables has a total mass of 2600 Kg , and the cables can withstand a maximum tension of 2.90×104 N . A) Apply Newton's second law to the elevator and find the maximum upward acceleration for the elevator if the cables are

You are a pulsar astronomer, and you have been measuring the pulses from a particular millisecond pulsar for several hundred days. You find that they do not arrive at regular intervals  sometimes they arrive a little early and sometimes a little late.

Millikan's oil drop experiment suspended a charged oil drop in an electric field. By measuring the size of the drop and using the oil's density, the weight of each drop could be calculated. This allowed the charge of each drop to be found, which was always

Thank you for answering my previous questions! I have another one now in regards to the following question... An unknown potential difference exists between the inner and outer surfaces of the membrane of a cell. The inner surface is negative relative to

Now let us consider the length of time that the Sun is visible. Wait until the planet is at the summer solstice (12:00am). a) How many hours of daylight are there on the summer solstice with the inclination at 45 degrees? To estimate the length of day,

Can someone help me/check with this work? 1. _______ is the rate of change of position. A.Speed***** B.Velocity C.Acceleration D.Deceleration 2. Which of the following is the difference between speed and velocity? A. direction***** B.units C.speed D.none

A 23.6μC point charge lies at the origin. Find the electric field at the point (0.55m , 0). What is the magnitude of the electric field? Express your answers using two significant figures. Enter the x and y components of the field separated by a

I had a two part question in which I'm fairly sure I did the first part correct, but part b I am unsure about. For part a, I had to determine the magnitude of the net electric field at the origin, which I got E= 1.7 X 10^7 N/C. Part b)if a point charge of


A planet with mass 7 x 1024 kg orbits a sun with a period of 1 Earth's years. The speed of the planet around that sun is constant and v=43000 m/s. What is the mass of that sun?

Consider a planet in space whose mass is twice that of earth and radius is thrice that of earth what will be the weight of a body on this planet if its weight on the earth is 900N ??

1. At what height above the earth is the freefall acceleration 30% of its value at the surface? 2. What is the speed of a satellite orbiting at that height?

Calculate the mass of moon if free fall acceleration near it surface is know be 1.62 m/s^2 ( radius of moon is 1738 Km )

An electric dipole is formed from two charges, ±q, spaced 1.00cm apart. The dipole is at the origin, oriented along the yaxis. The electric field strength at the point (x,y)=(0cm,10cm) is 320N/C . What is the charge q? Give your answer in nC. What is the

4 charged particles are at the cornedrs of a square of side a as shown. a) determine the magnitude and direction of the electric field at the location of charge q b) what is the total electric force exerted on q? basically picture is like this below It's a

There's a problem my professor assigned, but I'm not sure which equation/process I should use to solve it. Please help. Two particles having charges of 0.420nC and 15.1nC are separated by a distance of 1.50m. At what point along the line (in m from the

As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 9.8%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the

As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 28.2 %. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the

As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 47.9%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the


As a moon follows its orbit around a planet, the maximum gravitational force exerted on the moon by the planet exceeds the minimum gravitational force by 9.8%. Find the ratio rmax/rmin, where rmax is the moon's maximum distance from the center of the

Calculate the mass of Jupiter knowing that a person who weighs 490 N on the earth's surface would weight 1293 N on the surface of that planet. Jupiter has a radius of 7.15 × 10^7 m.

the planet Jupiter is more than 300 as massive as earth. But a body would scarecly weighs 3 times as much on the surface of Jupiteras it would on the surface of the earth. Can you think of an explanation for why this is so?

A spherical conductor has a radius of 14.0 cm and charge of 26.0 µC. Calculate the electric field and the electric potential (a) r = 10.0 cm, (b) r = 20.0 cm, and (c) r = 14.0 cm from the center.

Which of these are correct for an electric field? A) It's a vector quantity, and can be cancelled.B) Three of three are correct.C) It stores electric energy.D) Two of three are correct.E) It's the altered space surrounding electric charge.

A charge of uniform linear density 2.89 nC/m is distributed along a long, thin, nonconducting rod. The rod is coaxial with a long conducting cylindrical shell with an inner radius of 6.23 cm and an outer radius of 15.5 cm. If the net charge on the shell is

How do you calculate. How many years would it take the planet to orbit the sun. All I have is, that the planet is 97 times farther from sun than earth or 97 Astronomical units Use Kepler's Third Law. If you have never heard of it, read

A uniform electric field ofmagnitude 384 V/m is directed in the positive xdirection. Suppose a 16 ìC charge moves from the origin to point A at the coordinates, (20 cm, 60 cm). What is the absolute value of the change in potential from the origin to

please,i need help on this question:a thin circular ring of radius 20cm is charged with a uniform charge density(rho),if a small section of 1cm length is removed from the ring.calculate the electric field intensity at the center of the ring

A loop of surface area s1=10cm^2 placed ina uniform magnetic field Bof magnitude B1=8×10^2T, has its plane perpendicular to the field lines . A second loop of area s2=15cm^2 is placed in another uniform field B2 of magnitude B2=0.1T such that its normal


what is the magnitude and the direction of an electric field when an electron is accelrated vertically upward at a distance of 5.5 metres in 3 micro seconds?

Calculate the mass of Jupiter knowing that a person who weighs 490 N on the earth's surface would weight 1293 N on the surface of that planet. Jupiter has a radius of 7.15 × 107 m.

Consider a parallelplate capacitor with charge density 7.5 107 C/m2 on the two plates and an electric field that points in the +z direction. What magnetic field is necessary to provide a velocity selector for 58 keV deuterons that move in the +y

A body of mass 20kg is transferred from earth (grams=weight newton kg) to another planet where G=2 Newton kg, 1.Wat is the mass on earth? 2.wat is the wieght on earth? 3.wat is the mass on the other planet? 4.wat is the weight on the other planet?

A body of mass 20kg is transferred from earth (grams=weight newton kg) to another planet where G=2 Newton kg, 1.Wat is the mass on earth? 2.wat is the wieght on earth? 3.wat is the mass on the other planet? 4.wat is the weight on the other planet?