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

a hologram

a spectrometer

a wave front

a prism

We want to hang a thin hoop on a horizontal nail and have the hoop make one complete small-angle oscillation each 2.0 s. What must the hoop's radius be?

What are the formulas for Kinetic energy and Potential energy?

A block sliding along a horizontal frictionless surface with speed v collides with a spring and compresses it by 2.0 cm. What will be the compression if the same block collides with the spring at a speed of 2v?

Determine the specific heat capacity of an alloy that requires 59.3 kj to raise the temperature of 150.0 g alloy from 298 k to 398 k. 4.38 j/g°c 1.87 j/g°c 2.53 j/g°c 3.95 j/g°c 2.29 j/g°c

If you are traveling at 75 km/h how long will it take to travel 32 km?

Why are concussions a major concern? CER Claim Evidence Reasoning

What is the mass of the same rock on the earth

How are electric circuits and systems for carrying water in buildings similar

Work is being done in which of these situations? all motions are at a constant velocity

Why is the land significantly cooler at night when compared to the ocean?