Roy

Power is defined as the ____.

a. work done times the time taken to do that work

b. force on an object times the distance the object moves

c. force on an object divided by the time the force acts

d. work done on an object divided by the time taken to do the work

e. distance divided b the time taken to move that distance

Potential energy is the energy an object has because of its ___.

a. location

b. density

c. temperature

d. size

e. speed

Okay so in the video this guy with really bad teeth is going to war and it shows the with waiting with the son at home for many seasons. When the guy comes home there are another two or three kids there and his son is full grown, but still in a diaper. Then it shows two men fighting over the course of a year or so. One of the men has a big bushy beard. At the end of the fight, the one guy cuts all the hair of the other's face, and it turns out to be the wife from the beginning of the video. It's really ridiculous and funny, but I cant find it.

https://phaven-prod.s3.amazonaws.com/files/image_p...

What is the spring constant?

What force is required to stretch this spring 8.50 cm horizontally?

Find the restoring force on the block by the spring.

.

The mirror equation relates image height or distance to object height or distance.

T/F

Incident and reflected angles of light are equal only on plane mirrors.

T/F

The eye contains a converging lens that focuses light.

T/F

The critical angle is the angle at which all light is refracted out of a substance.

T/F

When you look at the image of a candle in a mirror, you see a real image.

T/F

Gamma radiation travels faster than waves near the infrared radiation end of the spectrum ____.

T/F

A way to detect termites inside wooden structures has been developed at the University of Minnesota. A detector perceives the high-frequency sound waves produced by the termites’ chewing. These waves are then converted into electromagnetic signals. Suppose these signals are at “long” radio wavelengths and that a giant double-slit apparatus has been built to observe interference of these radio waves.

If the waves have a frequency of 60.0 kHz, what would be the required slit separation for observing the fourth-order maximum at 52.0°?

a. ) f, v, d

b. ) d, m, f

c. ) θ, m, d, f

d. ) d, m, θ

My 14 year old and 12 year old cousins were pull out of school by her dipshit mother over a month ago, and have yet to even look at a new school. We are in PA and I know that at some point the student has to repeat the grade, but I don't know how long the student has to be out on school.

Laser light is analogous to:

a. A marching band with all members lifting their feet in step moving in the same direction.

b. Neither of these.

c. A busy shopping mall where people walk in all directions and with different strides.

It's okay to shine a Class 4 laser in someone else's eye because the higher the class number, the safer.

True

False

Early that morning, a young, blue-eyed detective in a beige coat stood in the open doorway of the motel room, closing an umbrella. A policeman friend had secretly allowed the detective to enter the room with the understanding that nothing would be touched. Though this restriction made the job more difficult, the confident detective knew that well-trained eyes could find a lot of clues on their own. Suddenly, the detective was nearly knocked off balance by a muddy dog chasing a black cat into the room. By the time the cat and dog ran outside, the detective knew that there was an embarrassing phone call to make. The day was off to a bad start.

Which of the following events does not happen in the passage?

A. A black cat is chased by a muddy dog.

B. A detective looks for clues in a motel room.

C. A detective is nearly knocked off balance.

D. A police officer gives a detective permission to look around.

I've read this repeatedly, but I'm having trouble with it.

The air was cool, warmed only by a brilliant sun that stood high in the sky. The bare branches of the trees swelled with leaves that were about to emerge. Green spikes were thrusting through the earth in the flower beds. In sunny spots in the yard, the yellow buds of daffodils were practically open, and hyacinth clusters were changing from green to pink or white. Although it was only the middle of March, spring was coming to Atlanta, Georgia.

A. in a backyard in Atlanta, Georgia

B. in a park in Atlanta, Georgia

Light moves from a clear andalusite (n =1.64) crystal into ivory. If the critical angle for andalusite is 69.9°, what is the index of refraction for ivory?

The critical angle for light traveling from almandine garnet into air ranges from 35.3° to 33.1°. Calculate the range of almandine garnet’s index of refraction.

What is the fundamental frequency of a cello string that is 0.85 m long when the speed of waves on this string is 499 m/s?

A piano wire vibrates with a fundamental frequency of 440 Hz when the speed of sound on the wire is 550 m/s. What is the length of this wire?

The Museo degli Argenti, in Florence, displays a plate that was carved out of rock crystal in the sixteenth century. Suppose a ray of light traveling in air strikes this plate (n = 1.544) at an angle of 22° with the normal. Trace the light ray through the plate, and find the angles of refraction at each surface.

a. 14 degrees, 22 degrees

b. 41 degrees, 21 degrees

c. 32 degrees, 26 degrees

In order for refraction to occur, all of the following conditions must be met except which one?

a. Light rays strike the medium parallel to the normal.

b. Light travels from one transparent medium to another.

c. Light rays strike the medium at an angle.

d. Light crosses the boundary that separates the media.

When light enters albite, also called “moonstone”, it has a luminous albedo, like a full moon. When light in air enters albite, it travels at a velocity of 1.95 × 108 m/s. What is albite’s index of refraction?

Nephrite jade was once used virtually everywhere by Neolithic man for polished stone weapons. Nephrite jade was also important in ancient oriental art. Suppose light passes from air at an angle of incidence of 59.2° into a thin ornate handle of a nephrite jade vase (n = 1.61) on display at a museum. Determine the angle of refraction in the jade.

.

a. reports and articles.

b. the mass media.

c. the voters.

d. legislators.

Suppose you use ultraviolet light of frequency 9.5 × 10^14 Hz to determine whether a mineral is fluorescent. To what wavelength does this correspond?

1. Suppose you use ultraviolet light of frequency 9.5 × 101^4 Hz to determine whether a mineral is fluorescent. To what wavelength does this correspond?

2. How fast does a radio wave travel that has a frequency of 7.6270 × 108 Hz and a wavelength of 39.296 cm? Is this radio wave traveling through Earth’s atmosphere or in space?

(Light travels in a vacuum at 2.99792 × 108 m/s and in air at 2.99709 × 108 m/s.)