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A ball is launched from ground level at 5m/s at an angle of 30 degrees above the horizontal. What is its height above ground level at the highest point in its trajectory?

STEP 1: Draw a diagram! Remember to include all the useful information you are given in the question i.e. the initial velocity of the ball (5m/s at 30 degrees above the horizontal). This can be shown as a ve...
IH
Answered by Iestyn H. • Physics tutor
7328 Views

To what extent was nationalism the main cause of WWI?

In my view nationalism was the main cause of WWI because nationalism was the driving force behind many of the event which escalated tensions in Europe in the early 20th century. Firstly, German nationalism l...
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Answered by Matthew H. • History tutor
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Why is water less dense in its solid state?

This is because in liquid state water molecules are close to each other, but in an disorganised manner. Each water molecule forms around 3.4 hydrogen bonds with other water molecules. However, in solid state...
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Answered by Cezar B. • Chemistry tutor
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Integrate x*ln(x) with respect to x

First identify that integration by parts is required. Then seperate the integration so u = ln(x) dv/dx = x then, du/dx = 1/x v = (1/2)x^2 . And using the integration by parts formula with these substitutions...
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Answered by Ana S. • Maths tutor
4627 Views

What are the distinguishing features of a mammal compared to other classes of animals?

All classes of vertebrates have their own distinguishing features that we can use to identify if an animal is indeed a mammal or not. The main classes of vertebrates can be simpified into mammals, fish, amph...
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Answered by Jamal A. • Biology tutor
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