What is the resistance of a lightbulb that uses an average power of 75.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170 V?

A copper wire is 8.00 m long and has a cross-sectional area of $1.00 \times 10 ^ { - 4 } \mathrm { m } ^ { 2 }$. The wire forms a one-turn loop in the shape of square and is then connected to a battery that applies a potential difference of 0.100 V. If the loop is placed in a uniform magnetic field of magnitude 0.400 T, what is the maximum torque that can act on it? The resistivity of copper is $1.70 \times 10 ^ { - 8 } \Omega \cdot \mathrm { m }$.

Find the area of each regular polygon. an octagon with apothem 12 and side length 10

Revue the events listed under "Work, Exchange, and Technology" and "Migration and Settlement" on the thematic timeline on pages 4-5. How did contacts among the Europeans, Native Americans, and Africans alter the economies of the three continents?

Factor. $y^{3}-216$

An LC circuit consists of a 20.0-mH inductor and a $0.500-\mu \mathrm{F}$ capacitor. If the maximum instantaneous current in the circuit is 0.100 A, what is the greatest potential difference across the capacitor?

What information does the author provide about Hunts Point? What do you think is the author's reason for including this information?

(a) What is the resistance of a lightbulb that uses an average power of 75.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170 V? (b) What is the resistance of a 100-W lightbulb?

A metal bar of mass 500 g slides outward at a constant speed of 1.5 cm/s over two parallel rails separated by a distance of 30 cm which are part of a U-shaped conductor. There is a uniform magnetic field of magnitude 2 T pointing out of the page over the entire area. The railings and metal bar have an equivalent resistance of $150 \Omega$. (a) Determine the induced current, both magnitude and direction. (b) Find the direction of the induced current if the magnetic field is pointing into the page. (c) Find the direction of the induced current if the magnetic field is pointed into the page and the bar moves inwards.

Does the voltage output increase when a generator is made to spin faster? Explain.

The gnaphosid spider Drassodes cupreus has evolved a pair of lensless eyes for detecting polarized light. Each eye is sensitive to polarized light in perpendicular directions. Near sunset, the spider leaves its nest in search of prey. Light from overhead is linearly polarized and indicates the direction the spider is moving. After the hunt, the spider uses the polarized light to return to its nest. Suppose that the spider orients its head so that one of these two eyes detects light of intensity $800 \mathrm{W} / \mathrm{m}^{2}$ and the other eye detects zero light intensity. What intensities do the two eyes detect if the spider now rotates its head $20^{\circ}$ from the previous orientation?

Determine the capacitive reactance of a $15.0-\mu \mathrm{F}$ capacitor in a circuit of frequency $60.0 \mathrm{~Hz}$.\

Consider water flow through two identical channels with square flow sections of $4 m imes 4 m$. Now the two channels are combined, forming a 8-m-wide channel. The flow rate is adjusted so that the flow depth remains constant at 4 m. Determine the percent increase in flow rate as a result of combining the channels.

What is the capacitive reactance of a 50 $\mu$F capacitor utilized in an AC circuit with a frequency of 50 Hz.