It is difficult to observe 1-nanometer, 1 millimeter, and 100 meter radiation with ground-based telescopes. What are the reasons for each?

Sarah added sugar to her iced tea, but it is not dissolving very quickly. Which can Sarah do to make the sugar dissolve faster? Add more sugar. Heat the tea. Add more ice.

1 h 48 min expressed in seconds

Which of the electromagnetic waves have the greatest wavelength? a. X-rays b. Blue light C. Infrared d. Ultraviolet

Part B Does the size of the particles change as the substance changes state?

Lc circuit consists of a 20.0 mh inductor and a 0.400 µf capacitor. if the maximum instantaneous current is 0.500 a, what is the greatest potential difference across the capacitor

A scientist heats a piece of iron until it is glowing white-hot. he places the metal inside a metal box. he removes all of the air from the inside of the box.

Johanna is studying what happens to the energy as a ball rolls down a ramp. What is she studying? Check all that apply. 1. gravitational potential energy 2. electrical energy 3. kinetic energy 4. mechanical energy 5. elastic potential energy

The density of sugar is 1.59 g/cm3. the mass of a sample is 4.0 g. find the volume of the sample

How much force is needed to accelerate an object of mass 90 kg at a rate of 1.2 m/s2? 0.013 N 75 N 108 N 1080 N

No work is done on an object when a force acting on the object does not move it. True False