Answer:
x rays is the correct answer
Answer:
40 km/h
Explanation:
First...
Look at the formula speed is equal to the distance over time or s = d/t.
Next...
Use the formula: 240/6.0
Finally...
Solve: 40
So the answer: 40 km/h
Answer:
Explanation:
To start off you need to know that the mass of an object never changes. But gravity does. Think about it life this. Gravity is less on the moon but more on earth, therefore, gravity can change, but mass can't. Now its almost the same as weight because weight changed based upon the gravity. On the moon you weigh only about 10 pounds, on earth, you way much more, and so on.
To calculate the formula you have to do Mass×Gravity which can calculate into Weight.
~Evie weight = mass * gravity
We know that mass never changes, but the weight changes depending on the gravitational pull.
Niobium 97
Explanation:
When a substance undergoes beta decay, the mass number of such nuclei remains the same but the atomic number increases by 1.
A beta particle is denoted as ⁰₋₁β
Zirconium ₄₀⁹⁷Zr
Niobium ₄₁⁹⁷Nb
The decay reaction is shown below:
₄₀⁹⁷Zr → ₄₁⁹⁷Nb + ⁰₋₁β
From the equation above, we can deduce that both mass and atomic numbers are conserved;
Mass number: 97 = 97 + 0; 97 = 97
Atomic number: 40 = 41 - 1; 40 = 40
Learn more:
Balancing nuclear equation brainly.com/question/10094982
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