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THERMODYNAMICS

91 questions found

Practice Questions

The magnitude of the resultant vector from the previous question, R = (6i + 2j), is approximately…

A. 8.0 units
B. 4.0 units
C. 6.3 units ✓
D. 3.5 units
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nmdcat.online Physics
Jun 25, 2026

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

A. (20 N, 34.6 N)
B. (28.3 N, 28.3 N) ✓
C. (34.6 N, 20 N)
D. (40 N, 40 N)
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nmdcat.online Physics
Jun 25, 2026

A force of 100 N is directed at an angle of 30° with respect to the positive x-axis. Its horizontal (x) component is approximately…

A. 50.0 N
B. 86.6 N ✓
C. 100 N
D. 70.7 N
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nmdcat.online Physics
Jun 25, 2026

The vertical (y) component of a velocity vector of 50 m/s making an angle of 60° with the horizontal is approximately…

A. 25.0 m/s
B. 50.0 m/s
C. 35.4 m/s
D. 43.3 m/s ✓
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nmdcat.online Physics
Jun 25, 2026

A vector has a horizontal component of 6 units and a vertical component of 8 units. The magnitude of this vector is…

A. 14 units
B. 10 units ✓
C. 2 units
D. 48 units
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nmdcat.online Physics
Jun 25, 2026

A displacement vector has components Dx = -4 m and Dy = +3 m. The quadrant in which this vector lies is the…

A. First Quadrant
B. Second Quadrant ✓
C. Third Quadrant
D. Fourth Quadrant
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nmdcat.online Physics
Jun 25, 2026

For a vector making an angle of 135° with the positive x-axis, the signs of its rectangular components (Rx, Ry) are…

A. (+, +)
B. (-, +) ✓
C. (-, -)
D. (+, -)
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nmdcat.online Physics
Jun 25, 2026

The resultant of two perpendicular forces of 5 N and 12 N has a magnitude of…

A. 17 N
B. 7 N
C. 60 N
D. 13 N ✓
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nmdcat.online Physics
Jun 25, 2026

A vector F has components Fx = 10 N and Fy = 10 N. The angle this vector makes with the positive x-axis is…

A. 30°
B. 45° ✓
C. 60°
D. 90°
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nmdcat.online Physics
Jun 25, 2026

The resolution of a vector into its perpendicular components is the reverse process of…

A. vector subtraction
B. vector composition ✓
C. scalar multiplication
D. dot product
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nmdcat.online Physics
Jun 25, 2026

A force vector of 20 N is applied along the negative y-axis. Its components (Fx, Fy) are…

A. (20 N, 0 N)
B. (0 N, 20 N)
C. (-20 N, 0 N)
D. (0 N, -20 N) ✓
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nmdcat.online Physics
Jun 25, 2026

The magnitude of the resultant of two vectors can be found using the Pythagorean theorem only if the vectors are…

A. parallel
B. anti-parallel
C. perpendicular ✓
D. equal in magnitude
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nmdcat.online Physics
Jun 25, 2026

A displacement of 10 m is directed at 210° counter-clockwise from the positive x-axis. Its y-component is…

A. -5.0 m ✓
B. -8.7 m
C. +5.0 m
D. +8.7 m
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nmdcat.online Physics
Jun 25, 2026

The direction of a resultant vector R with components Rx = -3 and Ry = -3 is…

A. 45°
B. 135°
C. 225° ✓
D. 315°
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nmdcat.online Physics
Jun 25, 2026

Given two vectors, A = (2i + 3j) and B = (4i – 1j), the resultant vector R = A + B is…

A. (6i + 4j)
B. (2i + 2j)
C. (6i + 2j) ✓
D. (-2i + 4j)
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nmdcat.online Physics
Jun 25, 2026
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