Category: Physics

What is a stream valley? A stream valley is a depression in the earth with water flowing at the lowest point. Streams create these valleys due to erosion, which is the movement of broken-down rock or soil from one place to another. During the maturity stage is also when the floodplain develops, which is the […]

What is 2/3 as a percentage? Some common decimals and fractions Fraction Decimal Percent 2/3 0.666? 66.666?% 1/4 0.25 25% 3/4 0.75 75% 1/5 0.2 20% What is 3 as a ratio? A ratio compares values. Use the “:” to separate the values: 3 : 1 Or we can use the word “to”: 3 to […]

What is the formula for resistance? Resistance has units of ohms (Ω), related to volts and amperes by 1 Ω = 1 V/A. There is a voltage or IR drop across a resistor, caused by the current flowing through it, given by V = IR. How do you convert a resistor from 12v to 19v? […]

How can you tell if you see ultraviolet light? By definition, ultraviolet light is ‘beyond violet light’ and the visible spectrum that can be detected by the human eye. It cannot, therefore, be seen directly. Detectors that are sensitive to UV convert it into a form that we can see. In this scenario, however, UV […]

Can you have a magnetic field without an electric field? No you can have a magnetic field without an electric field. Consider a rod with an equal number of positive and negative charges (such that they are equally spaced). This will result in a magnetic field but no electric field. How do moving electric charges […]

What are 4/5 major causes of atmospheric lifting and rainfall? – There are four lifting mechanisms that form clouds: Orographic Lifting, Convection, Convergence, and Updraft. What is drizzle rain? Drizzle is a light liquid precipitation consisting of liquid water drops smaller than those of rain – generally smaller than 0.5 mm (0.02 in) in diameter. […]

Can a fire blanket be wrapped around a person? A Fire Blanket is a highly flame-resistant blanket that can be used to either extinguish a small fire or to wrap around a person to protect them. They work by cutting off the oxygen supply (oxygen is one of the three elements that a fire needs […]

Is it safe to ground yourself? No. If the outlet were miswired or a device shorted out and pulled the ground voltage at the outlet up, you could be electrocuted. If you accidentally touched a live wire, you could be electrocuted through the connection to ground you made to yourself. This would be an absurdly […]

Is Fiber Optics safer than 5G? Wired fiber-to-the-premises (FTTP) is the speediest, healthiest, most secure, reliable, and energy-efficient way to stream Internet and video data. Wired networks are always faster and safer than wireless 5G. Is 5G faster than Fibre? In short, 5G can deliver faster speeds, more quickly than fibre. Will fiber optics become […]

Which time is best for exercise? Studies have shown that working out at 7 a.m., compared to later in the afternoon or evening, may help individuals get more quality sleep at night. One more argument making the case for a workout first thing in the morning is that exercising on an empty stomach could burn […]