Questions from Modern Physics

Q: Neurons are components of the nervous system of the body that transmit

Neurons are components of the nervous system of the body that transmit signals as electric impulses travel along their length. These impulses propagate when charge suddenly rushes into and then out of...

Q: Two small aluminum spheres, each having mass 0.0250 kg

Two small aluminum spheres, each having mass 0.0250 kg, are separated by 80.0 cm. (a). How many electrons does each sphere contain? (The atomic mass of aluminum is 26.982 g/mol, and its atomic number...

Q: Two small plastic spheres are given positive electric charges. When they

Two small plastic spheres are given positive electric charges. When they are 15.0 cm apart, the repulsive force between them has magnitude 0.220 N. What is the charge on each sphere? (a). if the two c...

Q: You charge up the Van de Graaff generator shown in Fig.

You charge up the Van de Graaff generator shown in Fig. 22.26, and then bring an identical but uncharged hollow conducting sphere near it, without letting the two spheres touch. Sketch the distributio...

Q: Suppose you had two small boxes, each containing 1.0

Suppose you had two small boxes, each containing 1.0 g of protons. (a). If one were placed on the moon by an astronaut and the other were left on the earth, and if they were connected by a very light...

Q: In an experiment in space, one proton is held fixed and

In an experiment in space, one proton is held fixed and another proton is released from rest a distance of 2.50 mm away. (a). What is the initial acceleration of the proton after it is released? (b)...

Q: In Example 21.4, suppose the point charge on the

In Example 21.4, suppose the point charge on the y-axis at y = -0.30 m has negative charge -2.0 µC, and the other charges remain the same. Find the magnitude and direction of the net force on Q. How d...

Q: In Example 21.3, calculate the net force on charge

In Example 21.3, calculate the net force on charge q1.

Q: Three point charges are arranged along the x-axis. Charge

Three point charges are arranged along the x-axis. Charge q1 = +3.00 µC is at the origin, and charge q2 = -5.00 µC is at x = 0.200 m. Charge q3 = -8.00 µC. Where is q3 located if the net force on q1 i...

Q: Repeat Exercise 21.17 for q3 = +8.00

Repeat Exercise 21.17 for q3 = +8.00 µC. Exercise 21.17: Three point charges are arranged along the x-axis. Charge q1 = +3.00 µC is at the origin, and charge q2 = -5.00 µC is at x = 0.200 m. Charge...