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Solve:

x 2 + y 2 = 25 y – 3x = 13 Rearrange the second equation: y = 13 + 3x Substitute the rearranged question in the first equation: x 2 + (13 + 3x) 2 = 25 Solve: x 2 + 169 + 9x 2 + 78x - 25 = 0 10x 2 + 78x + 144...
BJ
Answered by Bandana J. • Maths tutor
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What is the minimum height of a hill, so a ball of mass m falling from it can go through a loop of radius R?

There is only one requirement for the ball to go through the loop. Its energy must be such that the centrifugal force experienced by the ball when it is at the peak of the loop is greater than gravity pullin...
GP
Answered by Gabriel P. • Physics tutor
3988 Views

Define anxiety and explain how state anxiety can affect sports performance.

Anxiety is a negative emotional state that determines the level of worry or nervousness an individual experiences. There are two forms of anxiety: trait anxiety, where anxiety is part of individual's persona...
BJ
3084 Views

When should I use the imperfect tense in French?

The imperfect tense ('l'imparfait) is used to describe events which took place in the past . However, so is the perfect tense...So what makes the imperfect different? The imperfect tense; Past events Habitua...
EB
Answered by Emily B. • French tutor
2636 Views

When stimulated, how does the Pacinian corpuscle produce a generator potential?

The Pacinican corpuscle is a mechanical pressure receptor around the end of a sensory neurone. When pressure is detected, the receptor is compressed, opening ligand-gated sodium ion channels. This allows sod...
EJ
Answered by Elinor J. • Biology tutor
7761 Views