Questions from College Physics

Q: Two metal spheres of radius 5.0 cm carry net charges

Two metal spheres of radius 5.0 cm carry net charges of +1.0 µC and +0.2 µC. (a) What (approximately) is the magnitude of the electrical repulsion on either sphere when their centers are 1.00 m apart...

Q: A capacitor (capacitance = C) is connected to an ac

A capacitor (capacitance = C) is connected to an ac power supply with peak voltage V and angular frequency ω. (a) During a quarter cycle when the capacitor goes from being uncharged to fully charged,...

Q: The period of oscillation of a spring-and-mass system

The period of oscillation of a spring-and-mass system is 0.50 s and the amplitude is 5.0 cm. What is the magnitude of the acceleration at the point of maximum extension of the spring?

Q: Consider a closed surface that surrounds Q1 and Q2 but not Q3

Consider a closed surface that surrounds Q1 and Q2 but not Q3 or Q4. (a) Which charges contribute to the electric field at point P? (b) Would the value obtained for the net flux through the surface,...

Q: 11. A projectile is launched at an angle θ above the

11. A projectile is launched at an angle θ above the horizontal. Ignoring air resistance, what fraction of its initial kinetic energy does the projectile have at the top of its trajectory...

Q: A coffee maker can be modeled as a heating element (resistance

A coffee maker can be modeled as a heating element (resistance R) connected to the outlet voltage of 120 V (assumed to be dc). The heating element boils small amounts of water at a time as it brews th...

Q: Refer to Example 26.2. One million muons are moving

Refer to Example 26.2. One million muons are moving toward the ground at speed 0.9950c from an altitude of 4500 m. In the frame of reference of an observer on the ground, what are (a) the distance tr...

Q: While I1 is increasing, what is the direction of the magnetic

While I1 is increasing, what is the direction of the magnetic force exerted on loop 2, if any? Explain.