Aconducting sphere of radius 20.0 cm carries an excess charge of +15.0 µc, and no other charges are present. (k = 1/4π ε0 = 8.99 × 109 n · m2/c2) the potential (relative to infinity) due to this sphere at a point 12.0 cm from its center is closest to a conducting sphere of radius 20.0 cm carries an excess charge of +15.0 µc, and no other charges are present. ( = 1/4π = 8.99 × 109 n · m2/c2) the potential (relative to infinity) due to this sphere at a point 12.0 cm from its center is closest to 674 kv. 1130 kv. 3380 kv. zero. 9380 kv.

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

Gabby calls her cousin who lives in a different state and tells her to turn her radio to channel 98.7 so they can listen to their favorite song that is playing. her cousin turns her radio to 98.7, but does not hear the same song gabby hears. which most likely explains why?

Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90