Category: Physics

How does energy move in an ecosystem? Energy flows through an ecosystem in only one direction. Energy is passed from organisms at one trophic level or energy level to organisms in the next trophic level. Organisms need it for growth, locomotion, heating themselves, and reproduction. How does an ecosystem work? An ecosystem is a geographic […]

How can you tell if a Molly is a male or female? Males and females can be differentiated by the shape of their anal fin. Males have a anal fin that points backwards. Females’ anal fin looks just like the rest of their other fins. More than one molly can be kept in a tank […]

Is Steam an ideal gas? Steam is not an ideal gas. Do not apply the ideal gas law to saturated steam. The concept is still valid, temperature goes up with pressure etc, but the values will be wrong. This is why every thermo book has steam tables in the back. Does steam obey ideal gas […]

How do humans access water? Our drinking water comes from lakes, rivers and groundwater. For most Americans, the water then flows from intake points to a treatment plant, a storage tank, and then to our houses through various pipe systems. What is basic access to water? **Basic services: Having a protected drinking water source that […]

How many times does light bounce? If the light reflects times, the overall reflectance will be . Let’s call the light gone when the overall reflectance dips below 0.001. How many bounces does this take? In this case, light can bounce only about 135 times before vanishing. How many times is a ray of light […]

What features influence where a jet stream goes? The seasons of the year, location of low and high pressure systems and air temperature all affect when and where a jet stream travels. The greater the difference in air temperature, the faster the jet stream, which can reach speeds of up to 250 mph (402 kph) […]

What is your favorite James Bond movie? From Russia With Love is the classic Bond movie, imo. This and Casino Royale are my favorites in the series. You, sir, have good taste in Bond films. From Russian With Love was Robert Shaw aka Quint from Jaws. Which is the best Bond film? Here is a […]

What are the metric prefixes in order? In the SI, designations of multiples and subdivision of any unit may be arrived at by combining with the name of the unit the prefixes deka, hecto, and kilo meaning, respectively, 10, 100, and 1000, and deci, centi, and milli, meaning, respectively, one-tenth, one-hundredth, and one-thousandth. What is […]

Where is the sum of two vectors maximum and minimum? The sum of two vectros is maximum , when both thectros are in the same direction and is minimum when they act in opposite directions. When can we say the resultant of two vectors is maximum? Magnitude of the resultant of two vectors is maximum, […]

What is the link between frequency and pitch? The sensation of a frequency is commonly referred to as the pitch of a sound. A high pitch sound corresponds to a high frequency sound wave and a low pitch sound corresponds to a low frequency sound wave. Does Beyonce like Mariah Carey? Beyoncé adores Mariah’s Carey’s […]