Answer:
2070 m
Explanation:
Find the time to fall from d= 762.5 m to the ground :
d = 1/2 a t^2 shows t = 12.5 s
Horizontal distance = 166 m/s * 15.5 s = 2069.7 m =~2070 m
Answer: Hand tools are necessary for daily activities.
Explanation:
The hand tools are useful for day to day activities they aid in pouring substances, holding things, mixing substances, cleaning and for other purposes. In a chemical laboratory the hand tools like test tube holders can help in holding the chemicals. In a medical laboratory the forceps can be useful in holding and cutting the sections without causing any harm to the hands. Hand tools avoid the direct contact with the microorganisms in medical laboratory thus protect against infections. Hand tools aid in surgical operations and they help in avoiding direct contact with the blood vessels and organs preventing contamination and infections.
The unknown metal with a mass of 39.27 g is potassium with the symbol K.
The mass of an atom is due to protons and neutrons present in it.
The protons and neutrons are together present in the nucleus of an atom.
The mass of any element is given by its mass number whose formula is
Mass Number = Number of protons + Number of neutrons
In the given case 39 = Number of protons + Number of neutrons
The only element of the periodic table which satisfies the above equation is potassium because it has 19 protons and 20 neutrons.
Thus, the unknown metal with a mass of 39.27 g is potassium with the symbol K.
To know more about "mass number", refer to the following link:
brainly.com/question/4408975?referrer=searchResults
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I believe your answer would be False
They would only be elements because compounds and molecules consist of multiple elements
Answer:
Ice is water in solid phase, in this phase, the particles are very close together and relatively in fixed positions.
As the temperature starts to increase (thermal energy), also does the kinetic energy of the particles (so we have a change from thermal energy to kinetic energy), so they start to move "more", and the position of the particles starts to be less "fixed". There is a point where the particles have enough energy, and this point is where the phase of the water changes from solid to liquid phase (the fusion point). After this point the water can not hold his shape, and takes the shape of the container where it is.