Category: Physics

How do you tell if a capacitor has failed? Use the multimeter and read the voltage on the capacitor leads. The voltage should read near 9 volts. The voltage will discharge rapidly to 0V because the capacitor is discharging through the multimeter. If the capacitor will not retain that voltage, it is defective and should […]

What is the average force on the ball? Using Newton’s second law we can estimate the average force acting on the ball during the hit: Plugging in the numbers we find the average force to be Favg=18,436 N, which is equivalent to 4124 lbs of force. How much force did the racket exert on the […]

What is the perimeter of a sector? The formula for the perimeter of the sector of a circle is given below : Perimeter of sector = radius + radius + arc length. Perimeter of sector = 2 radius + arc length. What is sector area formula? The formula for sector area is simple – multiply […]

What operates best under bright light conditions? The fovea contains cones that possess high levels of visual acuity and operate best in bright light conditions. What is the process of receiving stimulus energies? The process of receiving stimulus energies from the external environment and transforming those energies into neural energy is called SENSATION. The process […]

What does a plastic stopper reduce? The vacuum prevents conduction. The tight stopper prevents air from entering or leaving the flask, so convection isn’t possible either. The sealed stopper stops heat getting in by convection; the vacuum stops conduction, and the metal lining between the outer case and the inner chamber stops heat radiating in […]

What are the two main types of steam turbines? Two types of steam turbines must be considered, condensing and noncondensing. What is the principle of steam turbine? In simple terms, a steam turbine works by using a heat source (gas, coal, nuclear, solar) to heat water to extremely high temperatures until it is converted into […]

What is 6c02? C6H12O6 = glucose. 6O2 = six molecules of oxygen. 6H2O = six molecules of water. As we learned earlier, the glucose will be used by the plant as energy. The oxygen and water will be released back into the atmosphere to help other living things. Why is 12 H2O used in photosynthesis? […]

How long is a true day? 23 hours and 56 minutes How many degrees does the Earth turn in 24 hours? 360 How many degree make an hour? 15 degrees How many degrees does the Earth turn in two days? While the Earth is rotating on its axis it is also moving along its orbit […]

What is wave interference and what two types are there? There are two types of interference: constructive and destructive. Constructive interference occurs when the wave amplitudes reinforce each other, building a wave of even greater amplitude. Destructive interference occurs when the wave amplitudes oppose each other, resulting in waves of reduced amplitude. What are sources […]

Who invented emotions? Thomas Brown Why do we develop feelings for someone? The reason we develop feelings for someone is that it allows us to discard some of the burdensome protections that we carry with us every day and get closer to the love we have inside of us. Of course, the fact that we […]