Answer:
8.85m/s
Explanation:
The potential energy the watermelon held before dropping is Ep=mgh=2*9.8*4=78.4J.
When it strikes the ground, all of its Ep will transfer into Ek, so 1/2*m*v^2=78.4.
We already knew that m=2, so insert that in, we will get the V^2=78.4 m/s, V=8.85 m/s
The purpose of the fraud fighter or also known as black
light machine is that it has the ability to check counterfeited bills. It is
designed to be a detector with the counterfeited bills, plus, it is a way of
verification. It is composed of a UV light, where in, making it have the
ability to detect the counterfeited bills which is its task to do.
Answer:The amount if mass of all substances before or after a chemical change are equal
Explanation:
Answer:
it is absorbed or reflected by the atmosphere
Explanation:
In the case when approx 50% only of the solar energy would be directed towards earth and it would be penetrates directly to the surface so the rest or remaining of the radiation would be either absorbed or refected by the atmosphere
So as per the given situation the above represent the answer
hence, the same is to be considered and relevant
