Can you hear music underwater? Sound waves actually travel five times faster in water than in air. Underwater those sound waves don’t vibrate the ossicles bones in your inner ear. They go straight to the skull bones, vibrating that heavy bone you can touch just behind your ear. Because of that, you can hear higher […]
What is the relationship between speed and friction?
What is the relationship between speed and friction? There the frictional force is proportional to the velocity for small velocities. That proportionality breaks down when the velocity becomes larger. In particular, it breaks down (and the drag goes up more rapidly) when something called the Reynolds’ number becomes large. Does friction increase with mass? Friction […]
What direction do electric fields travel?
What direction do electric fields travel? The direction of the electric field is always directed in the direction that a positive test charge would be pushed or pulled if placed in the space surrounding the source charge. Since electric field is a vector quantity, it can be represented by a vector arrow. What is the […]
Why is my diastolic so high?
Why is my diastolic so high? A: A high diastolic blood pressure (80 mm Hg or higher) that stays high over time means you have high blood pressure, or hypertension, even when systolic blood pressure is normal. Causes of diastolic high blood pressure include both lifestyle factors and genetics, but the disease is multifactorial. Is […]
Is there a 100 percent efficient machine?
Is there a 100 percent efficient machine? The short answer is: It can’t. Almost all machines require energy to offset the effects of gravity, friction, and air/wind resistance. Thus, no machine can continually operate at 100 percent efficiency. What is the formula for calculating power? Power = force multiplied by speed (velocity) P = F […]
What type of data is binary?
Who is responsible for the theory of seafloor spreading?
Who is responsible for the theory of seafloor spreading? The seafloor spreading hypothesis was proposed by the American geophysicist Harry H. Hess in 1960. What force causes seafloor spreading? The motivating force for seafloor spreading ridges is tectonic plate slab pull at subduction zones, rather than magma pressure, although there is typically significant magma activity […]
What is a the highest B the lowest total resistance?
What is a the highest B the lowest total resistance? Ans: Given resistances R1 =4 Ω, R2=8 Ω, R3=12Ω, and R4=24Ω. ∴ 2 Ω is the lowest total resistance. How can 3 resistors of resistance? There are three resistors of resistances 2 Ω, 3 Ω, and 6 Ω respectively. This equivalent resistor of resistance 2 […]
What is one environmental effect of diverting water from a river?
What is one environmental effect of diverting water from a river? What are two environmental problems associated with water diversion? Decreased water volume will increase salinity, harming the animal’s health. What is a benefit of diverting water for urban consumption? It’s necessary for health, such as maintain hygiene or cleaning supplies. What is the water […]
What is the weather of Earth?
What is the weather of Earth? On Earth, the common weather phenomena include wind, cloud, rain, snow, fog and dust storms. Less common events include natural disasters such as tornadoes, hurricanes, typhoons and ice storms. Almost all familiar weather phenomena occur in the troposphere (the lower part of the atmosphere). What are meteorological instruments used […]