PE = mgh,
Mass, m = 5.24kg, g ≈ 9.8m/s², h = 1.63m
= 5.24 * 9.8 *1.63 = 83.70376 ≈ 84
PE ≈ 84 J
Use Scoratic it works with any time of subject
Answer:
<h2><u>Constant</u></h2>
Explanation:
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<h2>Thanks</h2>
Answer:
0.25 gram of neptunium is remaining
Explanation:
First we calculate the no. of half lives passed. For that we have formula:
n = t/T
where,
n = no. of half lives passed = ?
t = total time passed = 8 days (From Monday noon to Tuesday noon of following week)
T = Half Life Period = 2 days
Therefore,
n = 8 days/2 days
n = 4
Now, for the remaining mass of neptunium, we use the formula:
m = (mi)/(2)^n
where,
mi = initial mass of neptunium = 4.00 grams
m = remaining mass of neptunium = ?
Therefore,
m = 4 grams/2⁴
<u>m = 0.25 gram</u>
