
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 as in the figure above. Find the magnitude and direction of the electric field at the position of the 2.2 µC charge.

An electric field of 850 kV/m is desired between two parallel plates, each area 7cm x 5 cm and separated by 2.5 mm of air. a) what charge must be on each plate ? b) how much energy is stored ?

Can someone explain the magnitude and direction of the acceleration of a ball moving upward, downward,and at the highest point? a=g

what can be said about the electric flux through any surface when it contains equal number of positive and negative charges?

Okk so im not asking for answers, i just need somone to expplain this homework to me! I don't get it what so ever. So the homework tittle is Weight in space. So it has a whole discripition in wjich i will write dpwn for you. The paper says: Gravity is an


A force of 40.0N is required to pull a 10.0kg wooden block at a constant velocity across a smooth glass surface on Earth. What force would be required to pull the same wooden block across the same glass surface on the planet Jupiter.

A space probe is 7.62 x 10 to the 7th power kilometers from the surface of the planet Mars. If the space probe is traveling towards mars at a arate of 127 meters per second, how many hours will it take the probe to reach the surface of the plant? Round to

Two flat surfaces are exposed to a uniform, horizontal magnetic field of magnitude 0.79 T. When viewed edgeon, the first surface is tilted at an angle of 26° from the horizontal, and a net magnetic flux of 9.2 x 104 Wb passes through it. The same net

The figure below shows an electron passing between two charged metal plates that create an 115 N/C vertical electric field perpendicular to the electron’s original horizontal velocity. (These can be used to change the electron’s direction, such as in

is this right? a 50kg barbell can be lifted by usinga force of 180 N. what is the force of gravity on this planet? if the same barbell is lifted on earth, what minimal force is needed? i got 3.6 for gravity of the unnamed planet; and 49 N for the minimal

If a spherical shell has a uniform volume density of 1.84nC/m^3, inner radius a=.1m, outer radius b=.2m, what is magnitude of electric field at radial distances r=a, r=b, r=3b

A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.9 m/s2. The driver then applies the brakes, causing a uniform acceleration of 3.0 m/s2. If the brakes are applied for 3.0 s, determine each of the following.

A charged particle is at the origin of coordinates. The particle produces an electric field of 4 kN/C at the point with position vector 36 cm. At what location does the field have the value 1 kN/C? Ans: 72 cm Could someone please explain to me what

A solid right circular cone of uniform mass density is initially at rest above a body of water so that its vertex is just touching the waters surface with its axis of symmetry along the vertical. Now, the cone falls into the water, and has zero speed at

A solid right circular cone of uniform mass density is initially at rest above a body of water, so that its vertex is just touching the water's surface with its axis of symmetry along the vertical. Now, the cone falls into the water, and has zero speed at


A solid rubber ball has a diameter of 8.0 cm. It is released from rest with the top of the ball 80 cm above a horizontal surface. It falls vertically and then bounces back up so that the maximum height reached by the top of the ball is 45 cm, as shown. 80

A point charge of 5.5 µC is located at the center of a spherical shell of radius 30 cm, which has a charge −5.5 µC uniformly distributed on its surface. Given: ke = 8.98755 × 10^9 Find the electric ﬁeld for a point inside the shell a

A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the xaxis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)xˆ, at various

A charge of +3 C is at the origin. When charge Q is placed at 2 m along the positive x‑axis, the electric field at 2 m along the negative ´‑axis becomes zero. What is the value of Q? a. ‑3 C b. ‑6 C c. ‑9 C d. ‑12 C

A point charge of 4.00nC is at the origin, and a second point charge of 6.00nC is on the axis at x = 0.800m . Find the magnitude and direction of the electric field at each of the following points on the axis. x_2 = 17.0cm, x_3 = 1.30m , x_4=17.0cm

Charge +Q = +7.10 nC is uniformly distributed along the right half of a thin rod bent into a semicirle of radius R = 3.60 cm, while charge −Q = −7.10 nC is uniformly distributed along the left half of the rod. What is the magnitude and direction of the

A positive charge magnitude q1=35.5 nc is located at origin. A negative charge q2= 4.5 nc is located on positive x axis at p= 16cm from origin. Calculate the location on the x axis in cm where electric field is zero. So far I know we set the eqns equal to

A thin 2.84 m long copper rod in a uniform magnetic ﬁeld has a mass of 53.7 g. When the rod carries a current of 0.273 A directed perpendicular to the magnetic ﬁeld, it ﬂoats in the magnetic ﬁeld. The acceleration of gravity is 9.81 m/s2 . What is

A moon is about 210,000 miles from the planet it orbits. Write in scientific notation. If a rocket traveled at 3 x 10^4 miles per hour, how long would it take for it to reach the moon from the planet? Write the number 210,000 in scientific notation. 210,00

A Halleffect probe operates with a 120 mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T, it produces a Hall voltage of 0.660 µV. The thickness of the probe in the direction of B is 2.00 mm. Find the density of the


A Halleffect probe operates with a 120 mA current. When the probe is placed in a uniform magnetic field of magnitude 0.0840 T, it produces a Hall voltage of 0.660 µV. The thickness of the probe in the direction of B is 2.00 mm. Find the density of the

A mover has to move a heavy sofa of mass 49.0 kg to the second floor of the house. As he pulls on the rope tied to the sofa, he makes sure that the rope is parallel to the surface of the ramp, which is at 30.0° to the horizontal. If the coefficient of

a ball of mass 100g is projected vertically upwards from the ground with a velocity of 49m/s at the same time another identical ball is dropped from a height of 98m to fall freely along the same path as followed by the first ball. After some time the two

A field hockey tournament is to be held in Yellowknife, NWT. According to regulations, the field is 25 yds by 100yds. For officials, support group and team members, a uniform rectangular strip of manicured lawn is to be installed by a local business group.

The deceleration(negative acceleration) of an automobile in a full skid on the dr pavement is a little greater than one half "g" or half the acceleration you would experience in free fall. Suppose you are going down the high way and you suddenly decide you

As shown in the figure, a square has sides of 8.0 cm with a charge of +6.0 µC at one corner (a) and with charges of 2.0 µC at the remaining three corners (b, c, and d). The figure is just a square with no measurements. Corner a being the top left

A particle carrying a charge of 6.0uC is located at the origin of a rectangle coordinate system, and a particle carrying a charge of 4.0uC is located at (0,5.0m). What are the magnitude and direction of the electric field at the positions (5.0m,0),

In a certain region of space the electric potential is V= 5x3x^2y+2yz^2. Find the expressions for the x,y,z compenents of the electric field in this region. What is the magnitude of the field at the point P, which has coordinates 1,0,2)m? I don't know

A 1470kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16070 N on the sub, as well as a downward resistive force of 1050 N. What is the submarine's acceleration?

A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless


A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

A ball is attached to one end of a wire, the other end being fastened to the ceiling. The wire is held horizontal, and the ball is released from rest (see the drawing). It swings downward and strikes a block initially at rest on a horizontal frictionless

A thin, light wire is wrapped around the rim of a wheel, as shown in the following figure. The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. The wheel is a uniform disk with radius 0.400 m.

The electric field E at a distance r from a point field is E =K/r^2 where k is a constant. Find an expression for the instantaneous rate of change of the electric field with respect to r.

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8 m/s2 . The acceleration period lasts for time 5.00 s until the fuel is exhausted. After that, the rocket is in free fall.

In the figure below, m1 = 10.9 kg and m2 = 3.7 kg. The coefficient of static friction between m1 and the horizontal surface is 0.60, and the coefficient of kinetic friction is 0.30. (a) If the system is released from rest, what will its acceleration be?

When attempting to solve a gravitational potential energy equation, is the freefall acceleration always 9.8m/s2?


What is the freefall acceleration in a location where the period of a 0.594 m long pendulum is 1.55 s s? Answer in units of m/s

An object is in free fall. At one instant, it is traveling at 41 m/s. Exactly 3.2 s later, what is its speed? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s

What is the freefall acceleration in a location where the period of a 2.03 m long pendulum is 2.86 s s? Answer in units of m/s squared

Mia is on a planet where g=10 m/s^2. she is standing on a bathroom scale in an elevator. the scale reads 500N. the elevator accelerates upward with an acceleration of 5.0m/s^2 what would the scale read now

Determine the fuel needed to safely land a spacecraft. Start at y = 100km. Landing is y = 0km. Vy < 25 m/sec is a safe landing speed. g = 1.354 m/s^2 Acceleration due to thrust (where fuel used is 100 kgs*Aythrust Amax = 30 m/s^2 Amin = 5 m/s^2 What I

A 4 μC point charge is on the xaxis at 1.1 m, and a 3 μC point charge is on the xaxis at 2.7m. Find the magnitude of the net electric field at the point on the yaxis where y = 3.7 m . The value of the Coulomb constant is 8.98755 × 109 N ·

An electron is accelerated by a uniform electric field (1000 V/m) pointing vertically upward. use newton's laws to determine the electron's velocity after it moves .10 cm

A student throws a water balloon vertically downward from the top of a building. The balloon leaves the thrower's hand with a speed of 6.00 m/s. Air resistance may be ignored, so the water balloon is in free fall after it leaves the thrower's hand. (a)

You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 8.0 m/s. (a) How much time does it take for the tennis ball to reach its maximum height? (b) What is the

Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Generally, an acceleration less than 800 m/s2 lasting for any length of time will not cause injury, whereas an acceleration greater than 1000 m/s2 lasting


Traumatic brain injury such as concussion results when the head undergoes a very large acceleration. Generally, an acceleration less than 800 m/s2 lasting for any length of time will not cause injury, whereas an acceleration greater than 1000 m/s2 lasting

Traumatic brain injury such as concussionn results when the head undergoes a very large acceleration. Generally, an acceleration less than 800 m/s^2 lasting for any length of time will not cause injury, whereas an acceleration greater than 1000 m/s^2

A solid right circular cone of uniform mass density is initially at rest above a body of water, so that its vertex is just touching the water's surface with its axis of symmetry along the vertical. Now, the cone falls into the water, and has zero speed at

A catapult launches a test rocket vertically upward from a well, giving the rocket an initial speed of 79.0 m/s at ground level. The engines then fire, and the rocket accelerates upward at 3.90 m/s2 until it reaches an altitude of 980 m. At that point its

Three point charges lie in a straight line along the yaxis. A charge of q1 = 9.20 µC is at y = 6.60 m, and a charge of q2 = 8.00 µC is at y = 3.90 m. The net electric force on the third point charge is zero. Where is this charge located?

Three point charges lie in a straight line along the yaxis. A charge of q1 = 9.80 µC is at y = 6.00 m, and a charge of q2 = 8.20 µC is at y = 4.10 m. The net electric force on the third point charge is zero. Where is this charge located?

Three point charges lie in a straight line along the yaxis. A charge of q1 = 9.10 µC is at y = 6.70 m, and a charge of q2 = 7.70 µC is at y = 3.60 m. The net electric force on the third point charge is zero. Where is this charge located?

Three point charges lie in a straight line along the yaxis. A charge of q1 = 9.50 µC is at y = 6.30 m, and a charge of q2 = 7.20 µC is at y = 4.00 m. The net electric force on the third point charge is zero. Where is this charge located? y = m

You can infer from the statement: Also like in soccer, the player cannot touch the ball with his/her hands to move the ball forward. In field hockey, however, a player may raise his/her hand in an open, flat position to stop the ball in the air as long as

. A neutral conducting sphere contains a spherical cavity. A point charge +q is located at the center of the cavity. A. What is the total surface charge on the interior surface of the conductor? B. What is the total charge on the exterior surface of the


Two point charges of magnitude +3.0 nC and +2.0 nC respectively are placed 2.0cm apart. Calculate the resultant electric field strength at their midpont(where the positive test charge are place at the midpoint)

If we examine a ball in free fall, we find that the momentum of the ball is not constant. This is not a violation of the law of conservation of momentum because A) the force of gravity acts on the ball. B) the ball experiences an external force. C) the

In 1865, Jules Verne proposed sending men to the Moon by firing a space capsule from a 220mlong cannon with final speed of 10.97 km/s. What would have been the unrealistically large acceleration experienced by the space travelers during their launch? (A

I need help with two questions: 1) An object can only have a charge that is an integral multiple of the charge on the ___. Am I correct with "electron" as the answer? or possibly elementary charge? 2) The difference in potential between any two points in a

An electron experiences a force of 12 mN in the positive xdirection in an electric field. What is the magnitude and direction of the electric field?

Earth's moon is 3.8 X 10 8 m from the planet and is in freefall. Acceleration due to the Earth's gravity acting on the moon is 2.70X 10 3. What is the moon's speed? How long does it take to make a complete orbit?

An electron in an electron beam experiences a downward force of 2.0 x 10^14 N while traveling in a magnetic field of 8.8 x 10 ^2 T west. The charge on a proton is 1.60×10^−19. a) What is the magnitude of the velocity? Answer in units of m/s

A +5.7C X 10 to the 6 power point charge is on the xaxis at x=3.0m,and a +2.0C X 10 to the 6 power point charge is on the xaxis at x=+1.0m.Determine the net electric field (magnitude and direction) on the yaxis at y=+2.0m.

What is the magnitude and direction of the electric field at a point 0.75 m away from a point charge of +2.0 pC?

Find the electric field (in N/C) at a point r =1.4 m above a point charge Q= 78 C. Take upwards to be positive.


what is the magnitude of the electric field produced by a charge of magnitude 8.00 uC at a distance of 1.00 m?

what is the magnitude of the electric field at point 2 m from a point charge q=4nC?

Light is incident on a glassair interface from the glass side (n=1.5), and researchers want to use the evanescent field on the air side (n=1.0) to excite the molecules adhered to the surface. It is desired that the evanescent field extend a distance

Which of the following is correct for the charge in a magnetic field? Choose one answer. a. A stationery charge can experience a force in a magnetic field. b. A moving charge parallel to the direction of the magnetic field can experience a force. c. A

A small block is released from rest at the top of a long frictionless ramp that is inclined at an angle of 36.9° above the horizontal. You measure that a small block travels a distance 12.0 m down the incline in 8.20 s. What is the value of g, the

A small block is released from rest at the top of a long frictionless ramp that is inclined at an angle of 36.9° above the horizontal. You measure that a small block travels a distance 12.0 m down the incline in 8.20 s. What is the value of g, the

The nucleus of an atom has a charge of 65 protons. (a) What are the direction and magnitude of the electric field at 4.9 x 10^10 m from the nucleus?

2 charge of 10 microcoulomb and 40 microcoulomb respectively 12cm apart find the position of a point where electric field is zero

Calculate the magnitude and direction of the electric force if a charge of −3.5 × 10−7 C is placed in a field of 12 N/C [right].?

Well it's an kinematics project and it involves alot of questions. So here goes the problem: Suppose a football was thrown at an angle of 37 degrees with a velocity of 90mi/hr while leaving a quarterback hand at a height of 6'4" above the ground.


If the magnitude of the electric field in air exceeds roughly 3 X10^6 N/C, the air breaks down and a spark forms. For a twodisk capacitor of radius 52 cm with a gap of 1 mm, what is the maximum charge (plus and minus) that can be placed on the disks

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8 m/s2 . The acceleration period lasts for time 5.00 s until the fuel is exhausted. After that, the rocket is in free fall. Max height

In the rough approximation that the density of the Earth is uniform throughout its interior, the gravitational field strength (force per unit mass) inside the Earth at a distance r from the center is gr/R, where R is the radius of the Earth. (In actual

some quantity of charge is distributed uniformly over the surface of a thin walled hollow sphere of radius 0.5m. The magnitude of the field is 4.0×10^2N/C at a distance of 6.0m from the center of the sphere. Calculate the quantity of charge on the sphere

A positively charged rubber rod is moved close to a neutral copper ball that is resting on a nonconducting sheet of plastic. a) Sketch the distribution of the charges on the ball. b) With the rod still close to the ball, a metal wire is briefly connected

An áparticle has a charge of +2e and a mass of 6.64 1027 kg. It is accelerated from rest through a potential difference that has a value of 1.16 106 V and then enters a uniform magnetic field whose magnitude is 3.00 T. The áparticle moves

An particle has a charge of +2e and a mass of 6.64 1027 kg. It is accelerated from rest through a potential difference that has a value of 1.10 106 V and then enters a uniform magnetic field whose magnitude is 3.10 T. The particle moves perpendicular to

A uniform 5.32 kg solid sphere of radius 0.344 m that is free to roll on a horizontal surface has a light axle passing through its diameter as shown. The axle is connected to a like yoke and in turn a light rope as shown. A constant tension of 7.81 N is

Suppose an astronaut drops a feather from 1.3 m above the surface of the Moon. If the acceleration due to gravity on the Moon is 1.62 m/s2 downward, how long does it take the feather to hit the Moon's surface?

Suppose an astronaut drops a feather from 1.4 m above the surface of the Moon. If the acceleration due to gravity on the Moon is 1.62 m/s2 downward, how long does it take the feather to hit the Moon's surface?


Suppose an astronaut drops a feather from 1.4 m above the surface of the Moon. If the acceleration due to gravity on the Moon is 1.62 m/s2 downward, how long does it take the feather to hit the Moon's surface?

Suppose an astronaut drops a feather from 1.4 m above the surface of the Moon. If the acceleration due to gravity on the Moon is 1.62 m/s2 downward, how long does it take the feather to hit the Moon's surface?

A ball is thrown straight downward from the surface of the moon. Is the maximum height it reaches less than, equal to, or greater than the maximum height reached by a ball thrown upwards on the earth with the same initial speed? Ignore air resistance in

Paleontologists estimate that if a Tyrannosaurus rex were to trip and fall, it would have experienced a force of approximately 260,000N acting on its torso when it hit the ground. Assuming the torso has a mass of 3800kg , find the magnitude of the torso's

2. Which of the following examples does not show projectile motion? A. a tennis ball bounces across the net B. a ball is thrown at a downward angle toward a target on the ground C. a feather drifts to the ground D. a horseshoe is pitched at a stake Is it