Category: Physics

Which type of mirror can form a real image? Solution: Concave mirrors can form real images. Convex and plane mirrors always form virtual images. Want to top your science exam ? How important is plane mirror to you? Plane mirror reflections create upright virtual images at the same magnification, or size, and distance as the […]

What is an example of speed and velocity? Put another way, speed is a scalar value, while velocity is a vector. For example, 50 km/hr (31 mph) describes the speed at which a car is traveling along a road, while 50 km/hr west describes the velocity at which it is traveling. What are 3 examples […]

Is it safe to link bank account to venmo? Venmo’s link to your bank and/or credit card account is what enables payments to be sent from person to person. Through their API and concealing of private data, Venmo is able to provide a seemingly safe and secure platform for users to send and receive cash. […]

Can old bananas make you sick? Most of us tend to throw away overripe bananas, fearing they would no longer be fresh, and therefore, not fit to eat. Although overripe bananas may not really look very appetising–the fruit turns soggy while the banana peel may turn black or brown–they are very good for our health. […]

What happens if the car makes a sharp turn the passenger tend to move to one side of the car why? Explanation: It is inertia that causes the passengers to move toward the right side of the car. As the car swerves to left, passengers’ body continues their motion as hitherto and as such it […]

Is Earth losing its magnetic field? Reversals occur nearly randomly in time, with intervals between reversals ranging from less than 0.1 million years to as much as 50 million years. The most recent geomagnetic reversal, called the Brunhes–Matuyama reversal, occurred about 780,000 years ago. Where is Earth’s magnetic field strongest? magnetic north pole Can humans […]

Is there a ball that can bounce forever? The law of conservation of energy implies that a bouncing ball will bounce forever. Of course, it does not. When you drop it on the floor, it changes some of its energy into other forms, such as heat, each time it hits the floor. What are bouncy […]

How long does aspirin take to dissolve in water? After the Alka-Seltzer tablet was added to the hot water the tablet should have quickly dissolved, taking some 20 to 30 seconds to do so, depending on the exact temperature. Does aspirin dissolve water? Solubility. Aspirin is only slightly soluble in water and acidic solutions such […]

When and where are hydraulics used? They use hydraulics to increase water pressure for better cleaning. Dishwashers fitted with hydraulics are also generally quieter. Construction machines. Equipment such as cranes, forklifts, jacks, pumps and fall arrest safety harnesses use hydraulics to lift and lower objects. Are car hydraulics legal? A car with hydraulics over the […]

What do you mean by eigen value and eigen function? Such an equation, where the operator, operating on a function, produces a constant times the function, is called an eigenvalue equation. The function is called an eigenfunction, and the resulting numerical value is called the eigenvalue. Eigen here is the German word meaning self or […]