Do I need a whistle to kayak? Any vessel less than 12 meters in length (39.4 ft.) is required to carry a whistle or horn, or some other means to make an efficient sound to signal intentions and position in periods of reduced visibility. Do you need lights to kayak at night? What lights do […]
Is angular velocity affected by radius?
Is angular velocity affected by radius? Linear/tangential velocity, in a circlular path, increases with the increase in radius and decreases with the decrease in radius. Hence, the angular velocity remains the same no matter what the change in radius is(W=V/r). Why is angular momentum always conserved? Objects can change their shape and still conserve angular […]
Which best explains why one laser beam might appear?
Which best explains why one laser beam might appear? Answer: One laser beam might appear blue and another laser beam might appear red because each laser beam is made up of one specific wavelength of light. Explanation : This means that laser light emits light of single frequency or wavelength. That’s why one laser beam […]
What is the most important part of preparing for a presentation?
What is the most important part of preparing for a presentation? The introduction is the most important part of your presentation as it sets the tone for the entire presentation. Its primary purpose is to capture the attention of the audience, usually within the first 15 seconds. What are the factors that affect effective presentation? […]
What is a periscope Class 6?
What is a periscope Class 6? A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer’s current position. In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° […]
What can you do to improve the air quality of your home or work place?
What can you do to improve the air quality of your home or work place? Improving air quality Keep it clean. A clean house may be a healthier house, because good indoor hygiene can greatly cut down on dust and animal dander, says Dr. Keep the greenery outdoors. Change your filters. Invest in an air […]
What does the slope of displacement time graph gives?
What does the slope of displacement time graph gives? A sloping line on a displacement-time graph shows that the object is moving. In a displacement-time graph, the slope or gradient of the line, is equal to the velocity of the object. The steeper the line (and the greater the gradient) the faster the object is […]
Is nitrogen inert or active?
Is nitrogen inert or active? Nitrogen is an inert gas that is suitable for a wide range of applications, covering various aspects of chemical manufacturing, processing, handling, and shipping. Nitrogen is not reactive and it is excellent for blanketing and is often used as purging gas. Is nitrogen a main group element? In chemistry and […]
What is wavelength called?
What is wavelength called? Wavelength is commonly designated by the Greek letter lambda (λ). The term wavelength is also sometimes applied to modulated waves, and to the sinusoidal envelopes of modulated waves or waves formed by interference of several sinusoids. What is the formula of Hertz? Physical value symbol unit Cycle duration T = 1 […]
What will happen when a ringing tuning fork is lowered into water?
What will happen when a ringing tuning fork is lowered into water? When struck, the double-pronged metal rod vibrates at a constant frequency — and thus emits a constant pitch. The naked eye can’t spot the vibrations, but dipping the tuning fork in water and slowing down the footage make them anything but invisible. What […]