Which is a tool used by scientists to determine the composition of objects?

a hologram

a spectrometer

a wave front

a prism

What is the frequency of radiation whose wavelength is 2.40x10-5 cm?

circular saw blade of diameter 0.190 m starts from rest. In a time interval of 5.80 s it accelerates with constant angular acceleration to an angular velocity of 145 rad/s. Part A Find the angular acceleration.

In ionic bonds what happens to electrons? A. Metals share electrons. B. Nonmetals donate electrons to metals. C. Nonmetals share electrons. D. Metals donate electrons to nonmetals

4 uses of plane mirror

What is a vector in Science?

Why is it useful for pairs of DNA to be held together by men bonds and not covalent bonds?

World class speed skaters can skate a 3,000-m course in about 4 minutes. What is their average speed for this course? A. 12.5 m/s B. 1.33 m/s C. 1.25 m/s D. 13.3 m/s

A building that is 105.50 ft. feet tall is casting a shadow that is 37.50 ft. feet. If the building next to it, is casting a shadow of 41.00 ft. feet, how tall is that building?

What is the technical name for super glue type adhesives

On his fishing trip Justin takes the boat 25 km south. The fish aren't biting so he goes 10 km west. He follows a school of fish 15 km north. What distance did he cover? What was his displacement?