what is similar about elements in the same group on the periodic table? A) atomic masses B) atomic numbers C) chemical properties D) number of electrons

Which process increases the potential energy of the particles of a sample

All of the following describe uses of renewable energy sources except

Why do you think that the speeds of comets increase as they near the sun

1. What does the SLOPE of a displacement vs time graph mean in terms of an object smo a. How far the object traveled b. The velocity of the object C. The acceleration of the object d. The starting displacement of the object 2. What doet

A volume of 95.0 ml of h2o is initially at room temperature (22.00 ∘c). a chilled steel rod at 2.00 ∘c is placed in the water. if the final temperature of the system is 21.30 ∘c, what is the mass of the steel bar?

The act, process or state of the change in place or position oa a body with respect to time and relative to the observer is said to be : - 1. Rest 2. Stationary 3. Motion 4. None of the above

During a snowball fight two balls with masses of 0.4 kg and 0.6 kg, respectively, are thrown in such a manner that they meet head on and combine to form a single mass of 1 kg. the magnitude of intial velocity foreach is 15 m/s.

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction