## New Head Start To A Level Physics

**Author**: CGP Books

**Publisher:**

**ISBN:**9781782942818

**Size**: 31.41 MB

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Take the radius of the Earth to be 6400 km. 2 Explain why the photo in Figure 2.1

is showing an exposure time of about 5 hours. 3 Convert 50 r.p.m. to rads−1. 4

The Moon circles the Earth every 27.3 days. Calculate its angular velocity in

degrees per day. 5 A CD, when first switched on, rotates at 200 r.p.m. When the '

reading

speed of the CD under the 'reading

same as it ...

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In

example of this. Table 5.1 describes some situations which illustrate the meaning

of doing work in

mislead us. If you hold a heavy weight above your

muscles will get tired. However, Chapter 5: Work, energy and power Chapter 5:

Work, energy and power Doing work Not doing work Pushing a car to

moving: ...

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Using the end of this arrow as the

cm long, to represent the 3 N force. ... Step 3: Complete the triangle by drawing

an arrow from the

... If they are to fly in a straight line towards their destination, the pilot must take

account of the wind speed. 9 An aircraft can fly at a top speed of 600 km/h. a

What will its speed be if it flies into a

blows in the ...

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Directions. • Two or more coplanar vectors can be added by using the

parallelogram method or the

outlined below. (a) Draw two vectors A and B which act at O and are inclined at

an angle 6 to each other. (b) Construct a parallelogram as shown in Fig 1.12. ▻

Fig 1.12 Parallelogram method (c) Draw the diagonal from O to the opposite

corner of the parallelogram. (d) This diagonal represents the resultant of A and B

and is denoted by ...

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Include a note of the scale you are using. c By measuring the diagram, determine

the yacht's displacement relative to its

can fly at 950 km h−1 relative to the air it is flying through. In still air it will

therefore fly at 950 km h−1 relative to the ground. a A wind of speed 100 km h−1

blows

ground be? b If the aircraft was flying in the opposite direction, what would its

speed be ...

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5 Scale 1 cm: 1 N O A B 16.5° 40° 20° The resultant force is represented by the

line joining the

Using a scale of 1 cm to represent 1 N, draw arrow OA to represent the 3 N force

first. 5 Where the arrow OA ends, draw arrow AB to represent the 2 N force so that

the tip (or

by joining the

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Roger Muncaster. A-

PhD Formerly

This One KN2R-1YZ-3SBF ;o R. Muncaster 1981, 1985, 1989, 1993 The right of.

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Draw a diagram to show the

application of the effect shown in your answerto (ii). Describe how you would use

a 12 V battery and a solenoid of length 50 mm and internal diameter 10 mm to

magnetise the steel arrow, shown full-size in the figure, in such a way that the

arrow

maximum safe current is 6 A. Your answer should include a circuit diagram, and

you ...

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Draw a diagram to show the

of the effect shown in your answerto (ii). NS N S (i) Describe how you would use

a 12 V battery and a solenoid of length 50 mm and internal diameter 10 mm to

magnetise the steel arrow, shown full-size in the figure, in such a way that the

arrow

and its maximum safe current is 6 A. Your answer should include a circuit

diagram, and ...