What is the speed of sound if the air temperature is 30 C? Temperature of air ϑ in °C Speed of sound c in m/s Time per 1 m Δ t in ms/m +40 354.94 2.817 +35 351.96 2.840 +30 349.08 2.864 +25 346.18 2.888 At what temperature where sound travels the slowest fastest? At […]
Which of these best describes a scientific theory answers com?
Which of these best describes a scientific theory answers com? Which statement best describes a scientific theory? A scientific theory is the best explanation for a praticular pattern of observations. What is scientific method in research? The scientific method is a standardized way of making observations, gathering data, forming theories, testing predictions, and interpreting results. […]
Why do we see rainbow colors in oil or bubbles?
Why do we see rainbow colors in oil or bubbles? Why do rainbow-like colors appear on the surface of oil? The wavelength corresponding to the constructive interference also differs and this causes the reflected light to have various colours. As a result, a rainbow-like colour pattern is shown on the oil surface and this phenomenon […]
What are the 10 steps of the rock cycle?
What are the 10 steps of the rock cycle? Metamorphic rocks underground melt to become magma. When a volcano erupts, magma flows out of it. (When magma is on the earth’s surface, it is called lava.)…When the particles are carried somewhere else, it is called erosion. Transportation. Deposition. Compaction & Cementation. What is the rock […]
Why atleast one open heater is used?
Why atleast one open heater is used? Why at least one open heater is used? Explanation: The open heater works as a deaerator. Are open or closed feedwater heaters more efficient? Heat transfer in closed feedwater heaters is less effective since the two streams are not allowed to be in direct contact. Most steam power […]
What rifle can shoot the farthest?
What rifle can shoot the farthest? Accuracy International L115A3 Long Range Rifle In 2009, British Army sniper Craig Harrison set a new world record for the longest confirmed kill in history with his L115A3, the standard long-range marksman’s rifle of the British military. What’s the longest kill shot? 3,540 Meters: The Record-Breaking Longest Confirmed Sniper […]
How does an LDR change resistance?
How does an LDR change resistance? The LDR. LDRs (light-dependent resistors) are used to detect light levels, eg in automatic security lights. Their resistance decreases as the light intensity increases. In the dark and at low light levels, the resistance of an LDR is high, and little current can flow through it. Why does the […]
How many processes are in human body?
How many processes are in human body? The ten life processes described above are not enough to ensure the survival of the individual. In addition to these processes, life depends on certain physical factors from the environment. These include water, oxygen, nutrients, heat, and pressure. What are the 8 life processes? The life processes are […]
Why did Reagan take down solar panels?
Why did Reagan take down solar panels? Originally, panels were installed in the late ’70s during President Jimmy Carter’s administration, but President Ronald Reagan removed them in 1986 because of a roof leak and decided not to reinstall them. How was Jimmy Carter’s presidency? 20 January 1977 – 20 January 1981 Which president did not […]
What are some examples of indoor air pollution?
What are some examples of indoor air pollution? 7 Common Indoor Air Pollutants (1) Pollutant: carbon monoxide (CO) Carbon monoxide is an odorless, invisible gas. (2) Pollutant: radon. (3) Pollutant: nitrogen dioxide (NO2) (4) Pollutant: secondhand smoke. (5) Pollutant: lead particles. (6) Pollutant: asbestos. (7) Pollutant: mold. What is the first step in managing indoor […]