What You Need:
Metal spoon
30 inches of kite string (40 inches for an adult)
What You Do:
Tie the handle of the spoon at the midpoint of the string.
Wrap the ends of the string around your index fingers (pointer fingers)
Place your fingers in your ears.
Lean over so that spoon hangs freely and swing the spoon so it taps against a door.
Hit the door again, this time harder.
<span> and you can hear it as a bell ( may be church bell sometimes )</span>
Answer: The material that is not a mixture; it has the same properties all the way through is called a substance.
Explanation:
A pure substance is a form of matter that has a constant composition and properties that are constant throughout the sample. Hence, it cannot be separated by physical means. Example: Gold
Mixture is a substance which has two or more components which do not combine chemically and do not have any fixed ratio in which they are present. They can be separated by physical means as well. Example: Air
Thus the material that is not a mixture; it has the same properties all the way through is called a substance.
Since any first distanced1=λ(2N1−1)/4, whereN1= 1,2,3,· · ·will do, the first distance only cannot be used to know the wavelength.The space between the resonances is ½ a wavelength, soλ= 2 [d2−d1]= 2 [(35 cm)−(25 cm)]= 20 cm.
The frequency isF = vλ=343 m/s2 [(35 cm)−(25 cm)]= 1715 Hz.
Answer:
Explanation:
The fundamental force of nature holds protons and neutrons together in the atomic nucleus.
Hope it helps..... :)
If an object<span> has a net </span>force<span> acting on it, it will accelerate. The </span>object<span> will speed up, slow down or change direction. An </span>unbalanced force<span> (net </span>force<span>) acting on an </span>object<span>changes its speed and/or direction of motion. An </span>unbalanced force<span> is an unopposed</span>force<span> that causes a change in motion.
thus the car would get its speed, and or direction mixed up</span>
