1. Light that has a frequency of about 5.00 1014 Hz (a wavelengthof about 600 nm) appears orange to our eyes. What is the energy injoules of the photons associated with this light?_________ J
2. The human eye is sensitive to orange light having a frequency ofabout 5.0 1014 Hz (a wavelength of about 608 nm). What is theenergy in joules of the photons associated with thislight?__________J
3. What are the forces on two charges of +0.41 C and +1.5 C,respectively, if they are separated by a distance of 2.1m?______N
Do the charges attract or repel each other?
4. An object has eight million more electrons than protons. What isthe net charge of the object?_________C
5. How many electrons make up 0.50 coulomb of charge? (Hint: q =ne.)
____________electrons
6. How much longer must the minimum length of a plane mirror be fora 6 ft 6 in man to see his complete head-to-toe image than for a 5ft 6 in woman to do so?________in
7. Waves moving on a lake have a speed of 2.7 m/s and a distance of1.5 m between adjacent crests.
(a) What is the frequency of the waves? ____ HZ
(b) Find the period of the wave motion? ______S
1. Light that has a frequency of about 5.00 1014 Hz (a wavelengthof about 600 nm) appears orange to our eyes. What is the energy injoules of the photons associated with this light?_________ J
2. The human eye is sensitive to orange light having a frequency ofabout 5.0 1014 Hz (a wavelength of about 608 nm). What is theenergy in joules of the photons associated with thislight?__________J
3. What are the forces on two charges of +0.41 C and +1.5 C,respectively, if they are separated by a distance of 2.1m?______N
Do the charges attract or repel each other?
4. An object has eight million more electrons than protons. What isthe net charge of the object?_________C
5. How many electrons make up 0.50 coulomb of charge? (Hint: q =ne.)
____________electrons
6. How much longer must the minimum length of a plane mirror be fora 6 ft 6 in man to see his complete head-to-toe image than for a 5ft 6 in woman to do so?________in
7. Waves moving on a lake have a speed of 2.7 m/s and a distance of1.5 m between adjacent crests.
(a) What is the frequency of the waves? ____ HZ
(b) Find the period of the wave motion? ______S
