1. If the force between two charges decreases by a factor of 100 because the cha

Question

1. If the force between two charges decreases by a factor of 100 because the charges are moved further apart?

a. 16   b. 10   c. 2   d. 8

2. An object is 25 cm from a thin lens with a focal length of 15 cm. Where is the image formed?

a. 10cm b. 37.5cm   c. 39cm   d. 20 cm

3. what is the photon energy of blue light that has an energy of 5.68 x 10^-19 J, what is its wavelength?

a. 450nm,   b. 350nm,    c. 550nm,    d. 200nm

4. the energy of a 2.00 keV electron is known to be within +- 3.00%. How accurately can its position be measured?

a. 1.5x10^-30m    b. 8.4x10^-30m    c. 2.1x10^-30m,     d. 3.0x10^-30m

Explanation / Answer

1/.10

2. 37.5 cm

3. 350 nm

4. c. 2.1x10^-30m,

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.