When you put the iron cube in the olive oil and the brick cube in the water what loses heat more quickly and why? The oil or the
water? Explanation why oil or water.
1 answer:
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Answer:
The initial speed of bullet is "164 m/s".
Explanation:
The given values are:
mass of bullet,
or,
mass of wooden block,
speed,
Coefficient of kinetic friction,
As we know,
The Kinematic equation is:
⇒
then,
Initial velocity will be:
⇒
On substituting the given values, we get
⇒
As we know,
The conservation of momentum is:
⇒
or,
⇒ Initial speed,
On substituting the values, we get
⇒
⇒
⇒
Answer:
4 capacitors
Explanation:
Given
--- conducting plates
Required
The number of capacitor (c)
This is calculated as:
So, we have:
It is 10.20 m from the ground.
<u>Explanation:</u>
<u>Given:</u>
m = 0.5 kg
PE = 50 J
We know that the Potential energy is calculated by the formula:
where m is the is mass in kg; g is acceleration due to gravity which is 9.8 m/s and h is height in meters.
PE is the Potential Energy.
Potential Energy is the amount of energy stored when an object is stationary.
Here, if we substitute the values in the formula, we get
50 = 0.5 × 9.8 × h
50 = 4.9 × h
h = 10.20 m