VJC

Calculate the magnitude of the electric field at the center of a square with sides 22.4 cm long if the corners, taken in rotation, have charges of 1.02 μC, 2.04 μC, 3.06 μC, and 4.08 μC (all positive).

15 years ago

A uniform electric field of magnitude 203 V/m is directed in the negative y direction. A +12.5 μC charge moves from the origin to the point (x, y) = (19.5 cm, 51.8 cm). 1) What was the change in the potential energy of this charge? 2) Through what potenti...

15 years ago

What is the speed of a 680 eV electron? What is the speed of a 3.50 keV electron?

15 years ago

An electron starting from rest acquires 4.20 keV of kinetic energy in moving from point A to point B. How much kinetic energy would a proton acquire, starting from rest at B and moving to point A? Determine the ratio of their speeds at the end of their re...

15 years ago

On planet Tehar, the acceleration of gravity is the same as that on Earth but there is also a strong downward electric field with the field being uniform close to the planet's surface. A 2.16 kg ball having a charge of 4.80 uC is thrown upward at a speed...

15 years ago

Two parallel plates, separated by 10 mm, are charged to a potential difference of 50 V (that is, one plate is 0 V and the other plate is 50 V). Which of the following statements are true? the electric potential at the midpoint between the plates is 50 V t...

15 years ago

How much work is needed to move a proton from a point with a potential of +470 V to a point where it is -51.0 V? Express your answer in joules. Express your answer in electron volts.

15 years ago

A charge of -4.191 μC is located at (5.100 m, 6.402 m), and a charge of 1.895 μC is located at (-1.436 m, 0). Calculate the electric potential at the origin There is one point on the line connecting these two charges where the potential is zero. What is t...

15 years ago

Consider a region in space where a uniform electric field E = 7450 N/C points in the negative x direction. What is the distance between the +13.1 V and the +14.1 V equipotentials?

15 years ago

If a capacitor has 3.84 μC of charge on it and an electric field of 2.22 kV/mm is desired if they are separated by 3.80 mm of air, what must each plate's area be?

15 years ago

The force on a wire is a maximum of 7.33E-2 N when placed between the pole faces of a magnet. The current flows horizontally to the right and the magnetic field is vertical. The wire is observed to "jump" toward the observer when the current is turned on....

15 years ago

A high-voltage power line carries a current of 120 A at a location where the Earth's magnetic field has a magnitude of 0.577 G and points to the north, 70.8° below the horizontal. Calculate the magnitude of the magnetic force exerted on a 258 m length of...

15 years ago

Protons move in a circle of radius 4.10 cm in a 0.570 T magnetic field. What value of electric field could make their paths straight?

15 years ago

A proton with a kinetic energy of 5.00E-16 J moves perpendicular to a magnetic field of 0.289 T. What is the radius of its circular path?

15 years ago

At a certain location, the Earth's magnetic field has a magnitude of 5.90E-5 T and points in a direction that is 71.6° below the horizontal. Calculate the magnitude of the magnetic flux through the top of a desk at this location that measures 132 cm by 83...

15 years ago

A 17.0 cm diameter circular loop of wire is in a 1.35 T magnetic field. It is removed from the field in 0.190 s. What is the average induced emf?

15 years ago

A 34.7 cm diameter coil consists of 20 turns of circular copper wire 1.50 mm in diameter. A uniform magnetic field, perpendicular to the plane of the coil, changes at a rate of 9.00E-3 T/s. Determine the current in the loop. Determine the rate at which th...

15 years ago

An emf is induced in a conducting loop of wire 1.24 m long as its shape is changed from square to circular. Calculate the average magnitude of the induced emf if the change in shape occurs in 4.21 s, and the local 0.123 T magnetic field is perpendicular t...

15 years ago

An object has a total energy that is two times its rest energy. What is its speed? Give answer in c. what equation do i use to solve this? step by step anyone?

14 years ago

Suppose a spacecraft of rest mass 34000 kg is accelerated to 0.206c. How much kinetic energy would it have? If you used the classical formula for KE, by what percentage would you be in error? Do not enter units.

14 years ago

A typical gamma ray emitted from a nucleus during radioactive decay may have an energy of 736 keV. What is its wavelength? A microwave oven produces electromagnetic radiation at λ = 12.1 cm and produces a power of 778 W. Calculate the number of microwave...

14 years ago

1) An electron moving with a speed of 2.84E+6 m/s has the same momentum as a photon. Calculate the de Broglie wavelength of the electron. 2) Calculate the wavelength of the photon.

14 years ago

What is the de Broglie wavelength of electrons with the following value of kinetic energy? 1.06 eV; What is the de Broglie wavelength of electrons with the following value of kinetic energy? 1.06 keV.

14 years ago

What is the longest wavelength light capable of ionizing a hydrogen atom in the n = 4 state? i know that Solve h c/L = (Rydberg)/6^2 for L something along those lines... but what am i solving for and what is c and h?

14 years ago

what is H?

15 years ago

what would happen if it became 1/4 the total energy instead? how would the equation be set up?

14 years ago

what is h and c?

14 years ago

so i would do speed of light/(rydberg)/6^2=h?

14 years ago