Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Aa projectile is fired from a gun that is 69.0m above flat ground, emerging from the gun with unknown horizontal speed. it hits the flat ground at a point 938m horizontally away from the gun. what i
Using conservation of energy, find a symbolic relationship giving the potential difference between its initial position and the point of maximum extension in terms of the spring constant k, the ampl
Nichrome wire of cross-sectional radius 0.786 mm is to be used in winding a heating coil. If the coil must carry a current of 9.50 A when a voltage of 2.10 102 V is applied across its ends, find the
A proton accelerates from rest in a uniform electric field of 638 N/C. At some later time, its speed is 1.28 x 106 (a) Find the magnitude of the acceleration of the proton.
Suppose after charging a 14.4 µF capacitor to 15 V, you connect it to another already charged capacitor of 7 µF and 9 V. What voltage will your voltmeter read across those two capacitor
A wire of initial length L0 and radius r0 has a measured resistance of 1.0 . The wire is drawn under tensile stress to a new uniform radius of r = 0.45r0. What is the new resistance of the wire?
A uniform electric field of magnitude 445 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.10 cm. What is the change in potential en
A string, 0.260 m long, vibrating in the m = 6 harmonic, excites an open pipe, 0.880 m long, into its third resonant frequency. The common frequency of the string and the pipe is closest to:
A 4.0 g string, 0.39 m long, is under tension. The string vibrates at 600 Hz in the third harmonic. The wavelength of the sound tone produced in the air near the string is closest to:
An open/closed organ pipe resonates at its fundamental frequency fC. A second pipe with both ends open resonates at its fundamental frequency fO, which is twice fC. What is the ratio of the length o
What current does he register there if the temperature is -88.0°C? Assume that no change occurs in the wire's shape and size.
A current of 0.97A flows through a copper wire 0.50mm in diameter when it is connected to a potential difference of 15 V. How long is the wire? Answer must be in km.
Two 10 cm-diameter charged disks face each other, 29cm apart. The left disk is charged to - 50 nC and the right disk is charged to + 50 nC . What is the electric field E, both magnitude and directi
A small object of mass 3.46 g and charge -18.4 oC is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. What are the magnitude and directio
A +35 µC charge is placed 60 cm from an identical +35 µC charge. How much work would be required to move a +0.72 µC test charge from a point midway between them to a point 7 cm clo
Two capacitors, C1 = 6.00 µF and C2 = 11.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. (a) Find the equivalent capacitance of the comb
(a) When a 21.00-V battery is connected to the plates of a capacitor, it stores a charge of 33.0 µC. What is the value of the capacitance? (b) If the same capacitor is connected to a 12.00-V
The space between the plates is then filled with a dielectric material, with a dielectric constant of 7.74. What must the magnitude of the charge on each capacitor plate now be, to produce the same
(a) What is the potential difference across the plates of the capacitor? V (b) What is the magnitude of the uniform electric field in the region between the plates?
A charge of -2.320 is located at (2.735 , 4.613 ), and a charge of 1.795 is located at (-2.649 , 0) There is one point on the line connecting these two charges where the potential is zero. Find thi
Please choose the combination of statements below that describes the situation when a plastic rod that is initially electrically neutral is rubbed with a piece of fur and the rod (and the fur) becom
A capacitor is consists of two short sections of parallel wires in air. One wire is found to be of the voltage of 40 V and the other -40. They carry equal and opposite charge of magnitude 70 pC. Wha
a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N.
(a) What is the potential difference across the plates of the capacitor? (b) What is the magnitude of the uniform electric field in the region between the plates?
An electron and a proton are fixed at a separation distance of 931 nm. Find the magnitude and direction of the electric field at their midpoint. Magnitude: And what is the direction of the electric