Physical Quantities And Measurement Techniques
Akopọ
Every number in physics is only as good as the measurement behind it. Before you can talk about speed, force or energy, you have to be able to measure length, volume and time reliably, and know whether a quantity carries a direction or not. This is the toolkit the whole subject is built on.
In this lesson you will choose the right instrument for a length, a volume and a time interval, use a clever multiple-measurement trick to pin down a tiny distance or a short time accurately, and sort quantities into scalars and vectors. You will also learn to combine two vectors at right angles, a skill examiners test again and again.
Awọn Afojusun
- Describe the use of rulers and measuring cylinders to find a length or a volume
- Describe how to measure a variety of time intervals using clocks and digital timers
- Determine an average value for a small distance and for a short interval of time by measuring multiples (including the period of oscillation of a pendulum)
- [Supplement] Understand that a scalar quantity has magnitude (size) only and that a vector quantity has magnitude and direction
- [Supplement] Know that the following quantities are scalars: distance, speed, time, mass, energy and temperature
- [Supplement] Know that the following quantities are vectors: force, weight, velocity, acceleration, momentum, electric field strength and gravitational field strength
- [Supplement] Determine, by calculation or graphically, the resultant of two vectors at right angles, limited to forces or velocities only
Akọ̀wé Ẹ̀kọ́
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
Ìdánwò Ẹ̀kọ́
Oriire fun ipari ẹkọ lori Physical Quantities And Measurement Techniques. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.
Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.
Lo ise abala yii gege bi anfaani lati mu oye re lori koko-ọrọ naa lagbara ati lati ṣe idanimọ eyikeyi agbegbe ti o le nilo afikun ikẹkọ. Maṣe jẹ ki awọn italaya eyikeyi ti o ba pade da ọ lójú; dipo, wo wọn gẹgẹ bi awọn anfaani fun idagbasoke ati ilọsiwaju.
- Which instrument is most suitable for measuring the volume of a liquid? A. metre rule B. measuring cylinder C. stopwatch D. balance Answer: B
- A student times 20 swings of a pendulum as 24.0 s. The period is: A. 24.0 s B. 4.8 s C. 1.2 s D. 0.83 s Answer: C
- Which of these is a vector quantity? A. mass B. temperature C. velocity D. energy Answer: C
- Forces of 6 N and 8 N act at right angles on a point. The resultant is: A. 2 N B. 10 N C. 14 N D. 48 N Answer: B
- Timing many swings instead of one mainly improves the measurement by: A. increasing the period B. removing parallax C. sharing the reaction-time error over many swings D. changing the pendulum length Answer: C
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
O wa lori ohun elo Green Bridge
Gba ohun elo Green Bridge CBT sori foonu tabi kọmputa rẹ lati ri awọn akọsilẹ ẹkọ ni kikun, awọn ibeere adaṣe, ati diẹ sii.
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Ṣe Adaṣe Awọn Ibeere Idanwo Adaṣe
Ṣe o fẹ ṣe adaṣe awọn ibeere idanwo adaṣe nipa Physical Quantities And Measurement Techniques? Ṣe igbasilẹ ohun elo Green Bridge CBT lati wọle si awọn ibeere idanwo adaṣe ati awọn ayẹwo adaṣe kikun fun koko-ọrọ yii.
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