Beijing 2013 Secondary School Entrance Examination Physics Paper Multiple Choice Question 10
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2013 Beijing Secondary School Entrance Examination Physics Questions and Answers
2014-06-11 Follow China Education Online
2013 Beijing Senior Secondary School Admissions Examination
Physics quiz paper
One Multiple Choice Question (Each of the sub-questions below has four options, only one of which matches the intent.) 28 points in total, 2 points per sub-question)
1 In the International System of Units, the unit of voltage is ( )
A amp B Fut C Joule D Watts
2 In the phenomenon shown in Figure 1, the phenomenon that belongs to the reflection of light is ( )
3 Of the following items, the one that normally belongs to the conductor is ( )
A plastic pen holder B rubber gloves C stainless steel ruler D ceramic bowl
4 In the following examples, the purpose of reducing friction is ( )
A soccer goalkeeper wears non-slip gloves B Cyclists pinch the brakes hard when braking
C Add lubricating oil to the bicycle bearings D The bottom of the sneakers is made of uneven patterns
5 Of the following electrical appliances, the use of the thermal effect of electric current is ( )
A computer B hot cup C tv D electric fan
6 In the example shown in Figure 2, the requirements for safe use of electricity are ( )
7 The escape hammer is equipped on the wagon with a closed window, and in the event of an emergency, passengers can use the escape hammer to break the glass to escape, and the four hammers in Figure 3 are of the same quality and shape. To make it easier to break the glass, what should be chosen is ( )
8 In the following examples, the internal energy of an object is changed by doing work is ( )
A Rub your hands against each other and the temperature of your hands rises
B Heat the water with a gas stove, and the temperature of the water rises
C Put the vegetables in the refrigerator and the temperature of the vegetables decreases
D Under the sun, the temperature of the stone benches in the park rises
9 Known that the specific heat capacity of water is, then the mass of 2kg of water, the temperature is reduced from 25 °C to 20 °C, the heat released is ( )
A 4.2x104J B 2.1x105J C 1.68x105J D 3.78x105J
10 The following statement about the work of force is correct ( )
A pushed the shopping cart forward with horizontal force, and the force of the cart did the work
B Lift the bucket from the ground, and the force of the bucket does not work
Book C is stationary on a horizontal tabletop, and the support of the book has done a good job
When the bag on the D hook is stationary, the pull on the bag does the work
Answer: A
Answers & Analysis:
The condition for doing work in junior high school is that the object moves a distance in the direction of the force.
A. The shopping cart of the research object, the force level and the shopping cart level advance, so the force does the work.
B. The study object bucket, the bucket is subject to upward force, and vertically moved a distance. So, do the work.
C. The study object book, the book does not have a moving distance, so the support force does not work.
D, the school bag is still, the pull does not work.