Category: Physics

What is the force of static friction equal to? Answer: The force that was applied was exactly the right amount to overcome static friction, so it is equal to Fsmax. On a flat surface, the normal force on an object is η = mg. The coefficient of static friction can be found by rearranging the […]

What is under beach sand? Often, underneath the loose sand of a beach is a layer of hard, compacted sand, which could be on its way to becoming sandstone if the necessary cement, pressure and heat ever appear — and if is not eroded by severe storms. What is made from sand? Industrial sand is […]

Why do bulbs in a series circuit get dimmer? Why bulbs in series are dimmer The current going through them is smaller because two bulbs in series have a higher resistance than a single bulb. Each charge only gives up some of its energy in each bulb, i.e. the p.d. across each bulb is smaller. […]

How do you calculate channel capacity when SNR is present? Hence, the channel capacity is directly proportional to the power of the signal, as SNR = (Power of signal) / (power of noise). so for example a signal-to-noise ratio of 1000 is commonly expressed as: 10 * log10(1000) = 30 dB. What is channel capacity? […]

What is hydrogen bonding What are its types explain with examples? Hydrogen bond is a electrostatic attraction between a hydrogen atom which is bond to a more electronegative atom such as Nitrogen, Oxygen, fluorine. These are two types of hydrogen bonds :- 1) Intermolecular Hydrogen bonding :- It occurs between two separate molecules. Eq :- […]

Can you leave garden hoses out all winter? A: Hoses can be stored outside as long as you make sure to drain all of the water from the hose. Hoses can be drained easily by running them over a tall place where gravity forces water to exit the hose. This ensures that the hose won’t […]

What is the standard form of 12000000000? The standard form is: 1.2 * 10^10. What is the exponential form of 648? Answer. ANS: 2×2×2×3×3×3×3 =2^3 × 3^4… How the distance to stars is measured? To measure the distance of a star, astronomers use a baseline of 1 astronomical unit (AU), which is the average distance […]

What are the 2 main properties of sound? The two main properties of sound are frequency and amplitude. The frequency of the sound waves determines the pitch of the sound. The amplitude of sound determines the loudness. The quality of sound is affected by the pitch and the loudness. What is sound and its properties? […]

How much louder is 6 dB? The established reference is 10dB for twice as loud in perception, based on peer review and subjective comments from a cross section of human subjects in experimental lab conditions. Certain absolutes are simply references we go by. In many examples, some of these absolutes can be shown to be […]

What does a dew point of 69 mean? Dew point below 55° = Very comfortable, you don’t even notice the humidity. Dew point of 55° to 60° = Pretty comfortably but you notice a touch of humidity. Dew point of 60° to 65° = Starting to feel humid but not too bad. Dew point of […]