Category: Physics

No.	Topics.	No.	Topics.
1.	CURRENT ELECTRICITY	2.	DAWN OF MODERN PHYSICS
3.	ELECTROMAGNETIC INDUCTION	4.	ELECTROMAGNETISM
5.	ELECTRONICS	6.	ELECTROSTATICS
7.	FORCE AND MOTION	8.	NUCLEAR PHYSICS
9.	ROTATIONAL AND CIRCULAR MOTION	10.	SPECTRA SPECTRA
11.	THERMODYNAMICS	12.	VECTORS AND EQUILIBRIUM
13.	WAVES

The resultant of three forces F1=10N East, F2=20N North, and F3=10N West is…

20 N North
40 N
20 N South
0 N

A vector A has magnitude 12 and is at 60°. Vector B has magnitude 8 and is at 300°. The y-component of their resultant is approximately…

10.4
3.5
18
-6.9

A displacement vector has a magnitude of 100 m and a y-component of 86.6 m. If it lies in the second quadrant, its x-component is…

+50 m
-50 m
+86.6 m
-86.6 m

For the forces in the previous question, the y-component of the resultant force is approximately…

17.3 N
10.0 N
20.0 N
0 N

The magnitude of the resultant force from the previous two questions (Rx=20, Ry=17.3) is approximately…

37.3 N
2.7 N
26.5 N
30.0 N

A force F1 is 10 N at 0° and F2 is 20 N at 60°. The x-component of the resultant force is approximately…

30.0 N
10.0 N
27.3 N
20.0 N

The sum of the components of vector A (3i + 4j) and vector B (-5i + 2j) results in a new vector with components…

(8i, 6j)
(2i, 6j)
(-2i, 6j)
(-2i, -2j)

The true angle θ for the resultant vector in the previous question is…

45°
135°
225°
315°

A vector has a magnitude of 10 units and an x-component of -10 units. Its y-component must be…

10 units
-10 units
0 units
20 units

Two vectors A and B have resultants of the same magnitude for both their addition and subtraction. This implies that the angle between vectors A and B is…

0°
45°
90°
180°

The reference angle φ for a resultant vector with components Rx = -5 N and Ry = 5 N is…

30°
45°
60°
90°

For the ship in the previous question, the direction of its resultant displacement is…

37° North of East
53° North of East
45° North of East
30° North of East

A force of 50 N is applied at an angle of 300°. Its components (Fx, Fy) are approximately…

(43.3 N, 25 N)
(25 N, 43.3 N)
(25 N, -43.3 N)
(43.3 N, -25 N)

A vector has a magnitude of 20 units and its y-component is 10 units. The angle it makes with the positive x-axis could be…

60°
45°
30°
90°

Two forces, F1 = (3i + 4j) N and F2 = (-3i – 4j) N, act on an object. The resultant force has a magnitude of…

10 N
14 N
0 N
5 N

A ship sails 3 km East and then 4 km North. The magnitude of its resultant displacement is…

7 km
1 km
5 km
12 km

A vector points along the negative x-axis. The angle it makes with the positive x-axis is…

0°
90°
180°
270°

A force of 40 N acts at 45° to the horizontal. The magnitudes of its horizontal and vertical components are…

(20 N, 34.6 N)
(28.3 N, 28.3 N)
(34.6 N, 20 N)
(40 N, 40 N)

If the x-component of a vector is positive and the y-component is negative, the vector lies in the…

First Quadrant
Second Quadrant
Third Quadrant
Fourth Quadrant

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