Answer: We will survive
Explanation: Caring for the earth is something that we need to do to live or survive on earth because if we don't we may not survive.
Hope this helps! :)
Let us list out what we know from the question.
Initial Velocity 
since the piton is 'dropped'.
Vertical Displacement of the piton D = 215 m
Acceleration due to gravity 
Final Velocity 
Using the equation, 
and plugging in the known values, we get
Simplifying by taking square-root on both sides gives us 
Thus, the speed of the piton just before striking the ground is 65 m/s.
Answer:
Nucleus A with 7 protons and 7 neutrons and Nucleus C with 7 protons and 5 neutrons are isotopes of the same elements
Explanation:
Isotopes are elements that have the same atomic structure but different molecular structure. An atom that has the same atomic number but different mass number are known to be isotopes.
The proton of an atom is the same as its atomic number while the sum of the proton and neutron is equal to its mass number.
According to the question, nuclei that has the same number of proton are isotopes of the same element. Therefore nuclei A and C with 7 protons each are isotopes of the same element since they have the same atomic number i.e number of proton = atomic number.
Their atomic masses of nuclei A and C are 14 and 12 respectively
The answer to your question is: Yes.
To solve each and every one, write the two given numbers in place of their letters in the given equation, and then solve the equation for the letter that's left.
For example, let's do #1 together. I'll do all the work, and you just watch.
#1 says that s=d/t. It also tells us that 'd' is 4 and 't' is 2. So here's a great idea: Why don't we write '4' where it says 'd', and write '2' where it says 't', and then see what we've got ?
s = 4/2
Wow ! We know that 4/2 is 2 . So s=2 and that's exactly the answer to the question !
Now it's YOUR turn. Do the next 25 problems the same way.
Answer:
17 m/s south
Explanation:
= Mass of dog = 10 kg
= Mass of skateboard = 2 kg
v = Combined velocity = 2 m/s
= Velocity of dog = 1 m/s
= Velocity of skateboard
In this system the linear momentum is conserved
The velocity of the skateboard will be 17 m/s south as the north is taken as positive
