Which is an example of a stage?

O A Number of words spoken

O

B. Making two-word sentences

O

C. Focusing on an object

O

D. Reading two books a week

A beam of white light from a flashlight passes through a red piece of plastic. a. What is the color of the light that emerges from the plastic? b. Is the emerging light as intense as, more intense than, or less intense than the white light? Explain.

Opal adds 25 grams of salt to a one-liter glass beaker filled up to its volume mark with pure water. She stirs the water until the salt crystals disappear. She shows the beaker to Teddy and tells him what she did.

Scientist suggest that galaxies are moving away from Earth due to A. Dark energy B. Doppler shift C. Energy D. Solar energy

Which refers to the change in wavelength that occurs when an object moves toward or away from a light source?

What is the wavelength of a 2.2 mhz ultrasound wave traveling through aluminum? assume that the speed of sound in aluminum is 5100 m/s?

Whats the core of electromagnet made of?

Ultraviolet light emits a total of 2.5 * 10^-17 J of light at a wavelength of 9.8 * 10^-7 m. How many photons does this correspond to?

3. A ray of light incident on one face of an equilateral glass prism is refracted in such a way that it emerges from the opposite surface at an angle of 900 to the normal. Calculate the i. angle of incidence. ii.

What would happen to the stratosphere if humans were to increase the amount of ozone within it?

The noise floor, also known as additive white Gaussian noise (AWGN), is a continuous noise level that appears over a wide spectrum when viewed in the frequency domain. a. Trueb. False