<span>Using Newton’s 2nd
law, we can calculate for the force (F) required to give a mass 255kg an
acceleration of 3.5 m/s^2: </span><span>
F= ma</span>
<span>F= 255kg*3.5m/s^2 = 892.5 N </span>
892.5 was the force needed for the motorcycle alone. Taking
into account the total resistance of 400N:
total F = 892.5 N + 400 N
<span>total F= 1292.5 N</span>
For this problem, we use the decay equation which is expressed as:
An = (Ao)e^-kt
where An is the amount left in t time, Ao is the initial amount and k is a constant.
We first calculate the value of k as follows:
An = (Ao)e^-kt
0.5 = e^-k(8)
k = 0.087
We calculate the time as follows:
An = (Ao)e^-kt
15.625 = 250e^-0.087t
t = 31.87 days
Answer:
Explanation:
A number can be written in the form of :
Where
m is the real number
n is any integer
In this case, the average distance from the Sun to the Earth is given,
d = 150000000000 meters
There are 10 zeroes in this number. We need to write this number in scientific notation. It is given by :
So, the average distance from the Sun to the Earth is . Hence, this is the required solution.
Answer:Solution
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Given:u=−10cm f=20cm (convex lens)
To find: v and image's nature.
Solution: From lens formula
v
1
−
u
1
=
f
1
v
1
+
10
1
=
20
1
Explanation: