How long does it take for an object to fall 1 meter? so the time to drop 1 meter is √(2/9.8) = 0.45 seconds. The way to do it using your reasoning is as follows: After t seconds speed is 9.8 x t. So average speed over that interval is 9.8xt/2 as you say in […]
What does not play a role in convection in the mantle?
What does not play a role in convection in the mantle? The core does not play an active role in mantle convection. The magnitude of the bottom TBL depends on the cooling rate of the mantle, the pressure and temperature dependence of the physical properties and the radioactivity of the deep mantle. The local Rayleigh […]
Does Pakistan have satellite?
Does Pakistan have satellite? With the purchase made from China of the Pakistan Remote Sensing System (PRSS-1) and the indigenously built Technology Evaluation Satellite (PAKTES-1A), in 2018 Pakistan saw both these satellites launched into orbit via China’s own Long March rockets. How long can a satellite stay in orbit? between 5 and 15 years How […]
What is the full form of Si system answer?
What is the full form of Si system answer? International System of Units (SI), French Système International d’Unités, international decimal system of weights and measures derived from and extending the metric system of units. Adopted by the 11th General Conference on Weights and Measures (CGPM) in 1960, it is abbreviated SI in all languages. Who […]
What is equal to the angle of reflection?
What is equal to the angle of reflection? Large telescopes use reflection to form an image of stars and other astronomical objects. Figure 1. The law of reflection states that the angle of reflection equals the angle of incidence—θr = θi. The angles are measured relative to the perpendicular to the surface at the point […]
What is the importance of phasor diagram?
What is the importance of phasor diagram? The purpose of a phasor diagram is to provide an efficient graphical way of representing the steady-state inter-relationship between quantities that vary sinusoidally in time. We picture all phasors to be rotating anticlockwise at a constant speed and completing one revolution per cycle of the supply. Is a […]
Which area on earth receives the most direct sunlight at what angle?
Which area on earth receives the most direct sunlight at what angle? During the summer solstice, the Sun shines most directly on the Tropic of Cancer, 23.5 degrees north of the equator, giving its most direct energy on Earth to the Northern Hemisphere. Which area on Earth receives more light? The equator How azimuth angle […]
Does Australia have no ozone layer?
Does Australia have no ozone layer? The ozone layer is depleted in two ways. Firstly, the ozone layer in the mid-latitude (e.g. over Australia) is thinned, leading to more UV radiation reaching the earth. Secondly, the ozone layer over the Antarctic, and to a lesser extent the Arctic, is dramatically thinned in spring, leading to […]
When is best time to salt driveway?
When is best time to salt driveway? The best time to treat the ground is before snowfall begins. Treating areas before snow (and freezing rain/ice) begins can help prevent ice from forming and prevent snow from settling. Because salt has a lower freezing point than water, it reduces the opportunities for moisture to freeze on […]
What is the largest infectious agent?
What is the largest infectious agent? Bacteria are the most numerous human pathogens and their impact on human health is likely to increase as many become resistant to antibiotics – the drugs specifically used to control them. Humans are also infected by over 200 viruses, but only two prions are currently known to cause human […]