Form3 Science Chapter 7 Energy and Power

Work done is

Kerja adalah

• The rate of work done in one unit of time

  Kadar melakukan kerja yang dilakukan dalam satu masa

• The product of force and displacement in the direction of the applied force

  Hasil darab daya dan sesaran dalam arah daya

• The ability to do work

  Kebolehan melakukan kerja

• when you grow up and go to work to earn money

  apabila kamu bekerja untuk mendapatkan gaji

What is the formula of Work Done

Apakah formula Kerja

• 
  $\frac{work}{time}$ / $\frac{\ker ja}{masa}$
  

• Force x Displacement

  Daya x Sesaran

• $E_p\ =\ mgh$

• $E_p=\frac{1}{2}fx$

• $E_k=\frac{1}{2}mv^2$

What is the formula of Kinetic Energy?
Apakah formula tenaga kinetik

• 
  $\frac{work}{time}$ / $\frac{\ker ja}{masa}$
  

• Force x Displacement

  Daya x Sesaran

• $E_p\ =\ mgh$

• $E_p=\frac{1}{2}fx$

• $E_k=\frac{1}{2}mv^2$

What is the formula of gravitational potential energy?
Apakah formula tenaga keupayaan gravity

• 
  $\frac{work}{time}$ / $\frac{\ker ja}{masa}$
  

• Force x Displacement
  Daya X Sesaran

• $E_p\ =\ mgh$

• $E_p=\frac{1}{2}fx$

• $E_k=\frac{1}{2}mv^2$

What is the formula of elastic potential energy?
Apakah formula tenaga keupayaan kenyal

• 
  $\frac{work}{time}$ / $\frac{\ker ja}{masa}$
  

• Force x Displacement
  Daya X Sesaran

• $E_p\ =\ mgh$

• $E_p=\frac{1}{2}fx$

• $E_k=\frac{1}{2}mv^2$

What is the work done when a 10kg box is being pushed by a 50kg boy to a distance of 10m?

Apakah Kerja yang dilakukan apabila seorang lelaki menolak 10kg kotak sejauh 10m?

• 50J

• 100J

• 500J

• 1000J

Which of the following is renewable energy?

Antara yang berikut, yang manakah tenaga boleh diperbaharu?

• Water

  Air

• Coal

  Arang Batu

• Petroleum

  Petroleum

• Nulcear Energy

  Tenaga Nuklear

A transformer will

Transformer akan

• increase the voltage only

  meningkatkan voltan sahaja

• increase the voltage and current

  meningkatkan voltan dan arus

• decrease the voltage

  rendahkan voltan sahaja

• increase and decrease the voltage

  meningkatkan dan merendahkan voltan

If the cost of 1KWh of electricity is RM0.30, what is the cost of using a 4kW fan for 1.5hour?

Jika kkos 1 kWj elektrik ialah RM0.30, apakah kos menggunakan kipas 4kW selama 1.5jam?

• RM1.80

• RM2.50

• RM2.20

• RM3.20

What is the name of the chemical reaction in which heat is absorbed?

Apakah nama tindak balas kimia di mana haba diserap?

• reversible reaction

  tindak balas balik

• endothermic reaction

  tindak balas endotermik

• exothermic reaction

  tindak balas eksotermik

• there is no such thing

  tiada reaksi semacam