The accommodation limits for a nearsighted person's eyes are 20.0 cm and 60.0 cm. That is, this person's unaided eye has a near point of 20.0 cm and a far point of 60.0 cm. When this person wears his glasses, he can see faraway objects clearly. What is the closest distance at which he can see objects clearly when wearing his glasses

Positrons are spontaneously emitted from the nuclei of

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?

Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?