What is difference between atom and element with example? A particular atom will have the same number of protons and electrons and most atoms have at least as many neutrons as protons. An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms […]
How do online tutors get paid?
How do online tutors get paid? How does tutoring with us work? Start the application. Fill out some basic info about yourself, including education and work experience. Select subjects you’ve mastered. Connect with students. Begin tutoring students. Get paid each week. Can a 16 year old become a tutor? Some 16-year-olds are concerned that they […]
What is the vertical component of the velocity just before the ball hits the ground?
What is the vertical component of the velocity just before the ball hits the ground? When a projectile reaches maximum height, the vertical component of its velocity is momentarily zero (vy = 0 m/s). Is horizontal velocity constant? The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical […]
Is there an opposite force to gravity?
Is there an opposite force to gravity? Correct answer: In equation form, that means . Use Newton’s second law ( ) to solve for the gravitational force, using acceleration due to gravity as your . As normal force is the opposite of the gravitational force, we can see that . Can you oppose gravity? Yes, […]
How do we demagnetize?
How do we demagnetize? Demagnetization randomizes the orientation of magnetic dipoles. Demagnetization processes include heating past the Curie point, applying a strong magnetic field, applying alternating current, or hammering the metal. Demagnetization occurs naturally over time. Can a permanent magnet be Demagnetised? To demagnetise a permanent magnet place it inside a solenoid, pointing East-West, through […]
Is the sun hotter than lightning?
Is the sun hotter than lightning? Lightning is four times hotter than the sun. The surface of the sun is around 11,000 degrees F. Scientists determined that temperature more than 20 years ago by examining the light given off by a bolt of lightning. How common is ball lightning? 1AD25), ball lightning has been seen […]
How much does a 1 kW solar system cost?
How much does a 1 kW solar system cost? Residential solar energy costs $0.08 to $0.10 per kWh on average, and commercial or utility-scale solar power costs $0.06 to $0.08 per kilowatt-hour. Prices include the Federal Solar Tax Credit (ITC) and vary drastically based on the amount of sunlight and type of solar panels installed. […]
What are the 3 types of models?
What are the 3 types of models? Contemporary scientific practice employs at least three major categories of models: concrete models, mathematical models, and computational models. What is the ideal model body? Runway models must have precise measurements so they’re able to fit the clothes that designers are going to be showing to their clients. Their […]
How is energy conserved in an electric motor Class 10?
How is energy conserved in an electric motor Class 10? The faster the wire is moving, the greater this “back EMF” becomes. When the back EMF equals the source voltage, the current through the wire goes to zero (in the ideal case) and the motor can revolve no faster. What is the working principle of […]
What are the 5 types of mechanical weathering?
What are the 5 types of mechanical weathering? There are five major types of mechanical weathering: thermal expansion, frost weathering, exfoliation, abrasion, and salt crystal growth. What is example of chemical weathering? With chemical weathering of rock, we see a chemical reaction happening between the minerals found in the rock and rainwater. The most common […]