Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.
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Question 2731: Which one of the following is a vector quantity?
Options:
A) Temperature gradient
B) Mass
C) Work
D) Time
Show Answer
The correct answer is A .
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Question 2732:
+ + X
Options:
A) a proton
B) a gamma ray
C) a helium particle
D) an alpha particle
Show Answer
The correct answer is D .
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Question 2733: A liquid of mass 1.0 x 103kg fills a rectangular tank of length 2.5m and width 2.0m. If the tank is 4m high, what is the pressure at the middle of the tank?[g = 10ms-2]
Options:
A) 1.0 x 104Nm-2
B) 2.0 x 103Nm-2
C) 1.5 x 103Nm-2
D) 1.0 x 103Nm-2
Show Answer
The correct answer is D .
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Question 2734: If two inductors of inductances 3H and 6H are arranged in series, the total inductance is
Options:
A) 9.0H
B) 18.0H
C) 0.5H
D) 2.0H
Show Answer
The correct answer is A .
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Question 2735:

What is the resistance of the circuit shown above
Options:
A) 4Ω
B) 11Ω
C) 19/5Ω
D) 17/4Ω
E) 8Ω
Show Answer
The correct answer is E .
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Question 2736:
A 400 N box is being pushed across a level floor at a constant speed by a force P of 100 N at an angle of 30.0° to the horizontal, as shown in the the diagram below. What is the coefficient of kinetic friction between the box and the floor?
Options:
A) 0.19
B) 0.24
C) 0.40
D) 0.22
Show Answer
The correct answer is A .
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Question 2737:

In the AC circuit diagram above, the resonance frequency is
Options:
A) 5000π Hz
B) 2500π Hz
C) 5000/π Hz
D) 2500/π Hz
Show Answer
The correct answer is D .
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Question 2738: A trough 12.0cm deep is filled with water of refractive index . By how much would a coin at the bottom of the trough appear to be displaced when viewed vertically from above the water surface?
Options:
A) 3.0cm
B) 6.0cm
C) 9.0cm
D) 16.0cm
Show Answer
The correct answer is A .
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Question 2739:
I. Melting
II. Boiling
III. Refraction
IV. Conduction
Which combination of the above is evident of the molecular nature of matter?
Options:
A) II , III and IV only
B) I ,II and IV only
C) I , III and IV only
D) I , II and III only
Show Answer
The correct answer is B .
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Question 2740: An object weighing 0.60N is hung on a spiral spring and caused it to extend by 6.0cm. The object is removed and a black of wood replacing it causes the spring to extend by 10.0cm. What is the weight of the block of wood?
Options:
A) 0.10N
B) 0.36N
C) 0.80N
D) 1.00N
E) 3.60N
Show Answer
The correct answer is D .