Crowdly

Which of the above forces is (are) acting on the boy when he is at position A?

The figure below shows a boy swinging on a rope, starting at a point higher than A.

A person at point A swings forward on a rope that hangs from point O

A downward force of gravity; a force exerted by the rope pointing from A to O; and a force in the direction of the boy’s motion.

A downward force of gravity; and a force exerted by the rope pointing from A to O.

A downward force of gravity.

A downward force of gravity; and a force in the direction of the boy’s motion.

The diagram shows a magnet moving upward into a coil.

Cylinder wrapped in wire that extends from point G beside it and up, around it, and back to G. Below: The S pole of a magnet

Which row of the table correctly identifies the direction of the induced magnetic field inside the coil?

	Current direction	Magnetic field direction
A	Anticlockwise	Downwards
B	Anticlockwise	Upwards
C	Clockwise	Upwards
D	Clockwise	Downwards

Option B.

Option C.

Option D.

Option A.

Magnetic flux is a measure of

The area of space through which field lines pass.

The intensity of a magnetic field passing through any given area of space.

The angle of a magnetic field to an area of space.

How the magnetic field fluctuates in any given area of space.

Graph. y-axis EMF, x-axis Time(sec). A sine curve from 0 to Vp, passing 240V Vmax, centre x=0,01, period x=0.02

Using the graph above, which of the following are true?

Period equals

Image failed to load: Left: small planet A with a rocket orbiting far from it. Right: Large planet B with rocket orbiting close, equal orbit as lef

Planets A and B have the same mass but different sizes. Each is being orbited by rocket of equal specifications.

Which of the following statements is true?

Rocket orbiting planet A experiences a stronger force of gravity.

Rocket orbiting planet B experiences a stronger force of gravity.

Both rockets experience the same force of gravity.

Neither planet experiences a force from the rockets.

Avec un produit dérivé, le hedger cherche à

se couvrir contre une évolution défavorable sur sa position initiale tout en profitant d'une évolution favorable

se couvrir contre une évolution défavorable sur sa position initiale

profiter d'une évolution favorable sur sa position initiale

se couvrir contre une évolution favorable sur sa position initiale

Il est possible de couvrir une transaction dans 6 mois, en s'engageant à vendre

La cotation des contrats sur taux de change est donnée dans le tableau suivant

Cotation taux de change EUR/USD

Spot	1,3531	1,3535
Forward 1 mois	1,3520	1,3525
Forward 3 mois	1,3498	1,3503
Forward 6 mois	1,3465	1,3471

1 euro pour 1,3465 dollars

1 dollar pour 1,3465 euros

1 euro pour 1,3471 dollars

1 dollar pour 1,3471 euros

L'essentiel des transactions sur les produits dérivés mondiaux se font sur des marchés organisés, le reste ayant lieu sur des marchés de gré à gré

True

False

100%

Etre en position longue sur un marché de dérivés signifie qu'on souhaite vendre à terme l'actif ou la matière première que l'on cherche à couvrir

True

False

100%