The effective nuclear charge (Z$_\text{eff}$) felt by the outermost electrons is the strongest for which of the following elements?

A) F

B) N

C) Be

D) B

E) O

Which one of the following molecules is nonpolar?

NH3
OF2
CH3Cl
H2O
BeCl2

Is $\ce{PCl3}$ polar or nonpolar?

find a mathematical model for the verbal statement. z varies jointly as the square of x and the cube of y.

What is the wavelength of radiation that has a frequency of $\pu{5.39 \times 10^14 s-1}$?

($c$ = $\pu{2.9979 \times 10^8 m s-1}$)

A) $\pu{6180 nm}$

B) $\pu{556 nm}$

C) $\pu{618 nm}$

D) $\pu{1.80 \times 10^-3 nm}$

E) $\pu{1.61 \times 10^23 nm}$

Calculate the frequency of visible light having a wavelength of 486 nm.

Calculate the frequency of visible light having a wavelength of 486 nm.

The inductance of a solenoid with $450$ turns and a length of $24 \mathrm{~cm}$ is $7.3 \mathrm{mH}$. What is the cross-sectional area of the solenoid?

A solenoid with 475 turns has a length of 6.00 cm and a cross-sectional area of $2.80 \times 10^{-9} \mathrm{m}^{2}$. Find the solenoid's inductance.

A generator connected to the wheel or hub of a bicycle can be used to power lights or small electronic devices. A typical bicycle generator supplies 6.00 V when the wheels rotate at $\omega=20.0$ rad/s. If the generator's magnetic field has magnitude B = 0.600 T with N = 100 turns, find the loop area A.

A generator connected to the wheel or hub of a bicycle can be used to power lights or small electronic devices. A typical bicycle generator supplies 6.00 V when the wheels rotate at $\omega=20.0$ rad/s. Find the time interval between the maximum emf of +6.00 V and the minimum emf of -6.00 V.

A 100-turn square coil of side 20.0 cm rotates about a vertical axis at $1.50 \times 10^{3}$ rev/min. The horizontal component of the Earth’s magnetic field at the coil’s location is equal to $2.00 \times 10^{-5} \mathrm{T}.$ (a) Calculate the maximum emf induced in the coil by this field. (b) What is the orientation of the coil with respect to the magnetic field when the maximum emf occurs?

A circular coil enclosing an area of 100 cm$^2$ is made of 200 turns of copper wire. The wire making up the coil has resistance of $5.0 \Omega$, and the ends of the wire are connected to form a closed circuit. Initially, a 1.1-T uniform magnetic field points perpendicularly upward through the plane of the coil. The direction of the field then reverses so that the final magnetic field has a magnitude of 1.1 T and points downward through the coil. If the time required for the field to reverse directions is 0.10 s, what is the average current in the coil during that time?

Medical devices implant edinside the body are often powered using transcutaneous energy transfer (TET), a type of wireless charging using a pair of closely spaced coils. An emf is generated around a coil inside the body by varying the current through a nearby coil outside the body, producing a changing magnetic flux. Calculate the average induced emf if each 10-turn coil has a radius of 1.50 cm and the current in the external coil varies from its maximum value of 10.0 A to zero in $6.25 \times 10^{- 6}$ s. (Hint: The magnetic field at the center of the current-carrying external coil is $B=N \frac{\mu_{0} I}{2 R}$. Assume this magnetic field is constant and oriented perpendicular to the internal coil.)