What happened to Theia? The model also assumed that the mantle of the theorized planet Theia was rich in iron, making it extremely dense. In their model, Theia winds up mostly destroyed, with pieces flung into space to create the moon, and much of its mantle breaking into fragments, which make it all the way […]
Who invented the electricity we use today?
Who invented the electricity we use today? Benjamin Franklin What is the application of electricity in our daily life? Electricity is an essential part of modern life and important to the U.S. economy. People use electricity for lighting, heating, cooling, and refrigeration and for operating appliances, computers, electronics, machinery, and public transportation systems. What is […]
What happens to the resistivity of wire if it is stretched?
What happens to the resistivity of wire if it is stretched? The resistance of a wire is inversely proportional to its area and directly proportional to its length. When the length is tripled then resistance will also become three times. If The wire is stretched 3 times the original length, the cross-section of the wire […]
Which item will sound travel faster?
Which item will sound travel faster? Solids: Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air. Why […]
Which of the following are examples of mitigation?
Which of the following are examples of mitigation? Other examples of mitigation measures include: Hazard mapping. Adoption and enforcement of land use and zoning practices. Implementing and enforcing building codes. Flood plain mapping. Reinforced tornado safe rooms. Burying of electrical cables to prevent ice build-up. Raising of homes in flood-prone areas. What are the priorities […]
What is the magnitude of the horizontal component of the velocity?
What is the magnitude of the horizontal component of the velocity? The horizontal velocity of a projectile is constant (a never changing in value), There is a vertical acceleration caused by gravity; its value is 9.8 m/s/s, down, The vertical velocity of a projectile changes by 9.8 m/s each second, The horizontal motion of a […]
Which is the healthiest sport?
Which is the healthiest sport? The 10 Healthiest Sports (1) Squash. Although squash players must be wary of flying racquets coming from their opponent’s direction, squash is a relatively safe game for beginners. (2) Rowing. (3) Rock Climbing. (4) Swimming. (5) Cross-Country Skiing. (6) Basketball. (7) Cycling. (8) Running. What are the positive and negative […]
Which of the following property of a charge can change when it moves freely in a uniform perpendicular magnetic field?
Which of the following property of a charge can change when it moves freely in a uniform perpendicular magnetic field? The magnetic force acts perpendicular to the direction of motion of the proton. It does not change its mass and speed but changes its direction of motion. So both velocity and momentum get changed. What […]
What is E in drift velocity?
What is E in drift velocity? In physics a drift velocity is the average velocity attained by charged particles, such as electrons, in a material due to an electric field. In general, an electron in a conductor will propagate randomly at the Fermi velocity, resulting in an average velocity of zero. Why is electron drift […]
What is the formula for displacement?
What is the formula for displacement? Displacement (s) of an object equals, velocity (u) times time (t), plus ½ times acceleration (a) times time squared (t2). What is the area under displacement time graph? Important: The area between a velocity-time graph and the `time’ axis gives the displacement of the object. The slope is the […]