Podcast
Questions and Answers
Which of the following is a necessary condition for work to be performed?
Which of the following is a necessary condition for work to be performed?
- A change in velocity
- A change in energy
- An object at rest
- An applied force (correct)
What is the unit of energy?
What is the unit of energy?
- Newton
- Joule (correct)
- Watt
- Pascal
Which of the following equations represents the work done by a constant force?
Which of the following equations represents the work done by a constant force?
- $W = F \times d$
- $W = F \times d \times \cos(\theta)$ (correct)
- $W = F \times \cos(\theta)$
- $W = F + d + \cos(\theta)$
Which of the following is a form of potential energy?
Which of the following is a form of potential energy?
According to the law of conservation of energy, energy cannot be
According to the law of conservation of energy, energy cannot be
Which separation technique would be most effective for separating mercury and water?
Which separation technique would be most effective for separating mercury and water?
What is the separation technique used to separate potassium chloride and ammonium chloride?
What is the separation technique used to separate potassium chloride and ammonium chloride?
Which combination of separation techniques would be most effective for separating common salt, water, and sand?
Which combination of separation techniques would be most effective for separating common salt, water, and sand?
Which combination of separation techniques would be most effective for separating kerosene oil, water, and salt?
Which combination of separation techniques would be most effective for separating kerosene oil, water, and salt?
Which tube in Fig. 2.1 (a) and (b) would be more effective as a condenser in the distillation apparatus?
Which tube in Fig. 2.1 (a) and (b) would be more effective as a condenser in the distillation apparatus?
