4 DETAILS KATZPSEF1 28.P.074. ASK YOUR TEACHER The resistance of a copper wire is measured to...
1. (-/1 Points) DETAILS KATZPSEF1 28.P.053.MI. MY NOTES ASK YOUR TEACHER PR A 60.0-W lightbulb is connected to a 220.0-V source. (a) What is the current through the bulb? (b) What is the internal resistance of the bulb? Need Help? Read it Master It Submit Answer 2. (-/1 Points] DETAILS KATZPSEF1 28.P.063. MY NOTES ASK YOUR TEACHER PR The USB charger for a smartphone delivers 520.0 mA of current at 5.10 V while charging the phone. What is the power...
6. DETAILS KATZPSEF1 30.P.065. ASK YOUR TEACHER Three long, straight wires are seen end-on in the figure below. The distance between the wires is r=0.254 m. Wires A and carry current I - - 1.72 A, and wire carries current le 30A Assume (for example) the only forces exerted on wire A are due to wires Band C. Find the force per unit length exerted on the following (Express your answers in vector form.) А B 18 (a) wire A...
5. DETAILS KATZPSEF1 32.P.011. ASK YOUR TEACHER Suppose a uniform magnetic field is perpendicular to the x 11.in. page of your homework and a rectangular metal loop lies on the page. The loop's sides line up with the edges of the page. The magnetic field is changing with time as described by B - 7.93 x 10-), where is in testas and is in seconds. (a) Is the magnetic field increasing or decreasing? increasing decreasing (b) Find the magnitude of...
3. DETAILS KATZPSEF1 26.P.071. ASK YOUR TEACHER The figure below shows three charged particles arranged at the vertices of an isosceles triangle with base bo 1.20 m. What is the electric potential due to the particles at point, which is at the midpoint of the base? (Consider the following values: A - 3.30,- 3.30 C, ac = -3.30 C, 9 - 28.09.) V P Submit Answer
6. DETAILS KATZPSEF1 24.P.024.MI. ASK YOUR TEACHER A positively charged rod of length - 0.220 m with linear charge density - 2.63 mc/m lies along the x axis as in the figure. Find the electric field at the position Pa distance 0.405 m away from the origin (Express your answer in vector form.) NC Submit Answer
10. DETAILS KATZPSEF1 30.P.045.MI. ASK YOUR TEACHER In a laboratory experiment, a beam of electrons is accelerated from rest through a 180-V potential difference. The beam then enters a uniform magnetic field and follows a circular path of radius 16.9 cm in the field region (a) What is the angle between the magnetic field and the electrons' velocity? (b) What is the magnitude of the magnetic field? T Submit Answer
DETAILS KATZPSEF1 27.P.019. ASK YOUR TEACHER Two capacitors have capacitances of 5.0 uF and 2.5 F. Initially, the first one has a potential difference of 19.0V and the second one 3.0 V. If the capacitors are now connected in parallel, what is their common potential difference? V Submit Answer
2. DETAILS KATZPSEF1 29.P.046. ASK YOUR TEACHER The figure below shows a circuit with a 12.0-V battery connected to four resistors. How much power is delivered to each resistor? (Consider the following values: R: - 1.050, Ry - 2.15 0. R) - 3.850, R=4.800.) w P w P- w PA w 120 V Ry RA w R Submit Answer
2. DETAILS KATZPSEF1 29.P.046 ASK YOUR TEACHER The figure below shows a circuit with a 12.0-V battery connected to four resistors. How much power is delivered to each resistor? (Consider the following values: R: - 1.050, Ry - 2.150, R) - 3.850, R = 4.800.) PA w P w w PA w 120V RS RA w R2 Submit Answer
5. DETAILS KATZPSEF1 23.P.041. ASK YOUR TEACHER Charges A, B, and are arrayed along the y axis, with GA = -3.80 nC, 98 - 3.00 nC, and ac = 5.40 nC (see figure below). The distance between charges A and B isyu = 1.00 m, and the distance between charges B and C is Y2 = 3.00 m. 9A Yi y2 4c (a) What is the net electrostatic force on charge A? magnitude N direction -Select- (b) What is the...