728 Answered Questions for the topic physical science
Force Vector / acceleration
how does water affect seed germination
At 189 C, a sample of a gas has a volume of 32.0 mL. What volume does the gas occupy at 242 C?
Constant velocity and acceleration
Calculate the decrease in temperature 6.00L at 20.0 degrees Celsius is compressed to 4.00 L
What will the stopping distance be for a 3000-kg care if -3000 N of force are applied when the car is traveling 10m/s
Catalyst are used to make a chemical reaction to do what
Compare and contrast a dilute solution of a strong acid and a concentrated solution of a weak acid
. An ocean wave has a wavelength of 10 m and a frequency of 4.0 Hz. What is the velocity of the wave? Show the appropriate equation from your book and frequency of 4.0
suppose a sample of radioactive substance weighs 34 mg. One year later, the sample weighs 23.5 mg. what is half-life of this substance? round your answer to two decimal places.
What is the relationship between the magnetic force and distance?
How much energy did truck one lose in the collision
What conversion factor is needed to change from kilometers to meters?
Name 10 elements you have access to as an everyday consumer.
Strontium is very dangerous to humans because it can accumulate in bone tissues. How can you relate this fact to the organization of the Periodic Table?
Of the atoms of sodium, magnesium and aluminum, one tends to lose 3 electrons, another 2 electrons and the third, loses one. Rank the elements in order of which lowest the fewest to greatest.
What happens to the size of the elements as one progresses from left to right?
Which has more atoms: a 1g sample of Carbon-12 or a 1g sample of Carbon-14?
Explain the difference between atomic number, mass number and atomic mass?
What is the total resistance of this circuit, and what type of circuit is this?