How many of the elements of the periodic table are considered solids

If the line spectrum of lithium has a red line at 670.8 nm. How much energy does a a photon with this wavelength have?

An antique rifle fires 9 mm bullets such that as they travel down the barrel of the rifle their speed is given by v = (-4.60 ✕ 107) t2 + (2.55 ✕ 105) t, where v is in meters per second and t is in seconds.

What is the average velocity between 12.0 and 15.0 seconds

How does a battery work? explain

A remote control car is traveling at a velocity of 0.50 m/s when it hits a wall and comes to a stop in 0.050 seconds. What is the acceleration of the car?

For each description, choose the fault it describes. Fault types may be used more than once. A. Strike-Slip fault B. Reverse Fault C.

If a sugar has 11 oxygen atoms, how many hydrogen atoms does it contain?

Why do clouds tend to form around 3:00pm and 6:00am?

Why does sound travel faster under water?

Give one example when it might be important to know how much gravitational potential energy is stored by an object. Why is it important?