Question

Question

A person is using a makeup/shaving mirror with their nose 8.0 cm from the concave spherical surface of the mirror, which has a radius of 32 cm. The distance from the mirror to the image of the person's nose is:

Question options:

	32 cm
	16 cm
	24 cm
	12 cm
	8.0 cm

Question

A solenoid has a length L = 0.66 m, a radius of 1.2 cm, and has N = 8.8x10^3 wraps of a copper wire wrapped tightly around it.   What must the current be in the wire to produce a magnetic field inside the solenoid near its center of magnitude 0.096 T?

Question options:

	5.7 A
	3.1 A
	9.6 A
	none of these
	4.8 A

Question

A violin string is playing a note in its fundamental mode of vibration at 440. Hz. The length of the vibrating portion of the string is 36.0 cm and the mass is 0.320 grams. To what tension must the string be stretched?

Question options:

	89.2 N
	32.0 N
	69.6 N
	112 N

Question

A mass on a spring has a period T = 1.6 seconds and a mass m = 2.6 kg.   What is the spring constant of this spring?

Question options:

	20. kg/s
	128 kg/s
	64 kg/s
	6.4 kg/s
	none of these

Answer 1

mirror is a Concave missor, Shaving of mose distance from mirror (u) - 8 cm radius creature @ = 32 cm to cal length (f)=% = 16 cm, det image of the persoons's grose distance ber By missos formula +++++ P: 2-3 Žuto - moto v =-16 cm L minus sign shows Virtual ionage. :. The distance from the mirror to the image of the person's nose iu 16 cmo 0 16 min