Category: Physics

What is the angle of reflection when the incident ray makes an angle of 30 0 with i the normal II the mirror? The incident ray will have an angle of reflection of 30 degrees (made with a surface normal to the mirror surface). The reflected ray will make an angle of 60 degrees (90 […]

Is a 1.4 Litre engine good for motorway? Frequent motorway trips If so, you’ll need an engine sized from 1.4 litres to 2.0 litres, because you’ll be on the motorway network a great deal. Bigger engines can better handle the rigours of the motorway – such as overtaking. How many cc is a 1.4 Litre […]

Is it harmful to reheat tea? First things first, do not reheat the tea if it has been left at room temperature for anywhere between 4 to 8 hours. If you forgot to have your tea for a maximum of 10 to 15 minutes, it is safe to drink. The presence of milk results in […]

Is it safe to eat iceberg ice? A: Iceberg ice is completely safe to consume. Q: Are icebergs salty? A: No. Icebergs are created from pure, fresh water and snow. What will happen if icebergs do not float? Unlike plants, animals can move so they would move as far as possible or be trapped and […]

What is the semi major axis of Earth? 1.000 1 What is the value for eccentricity? orbital calculations For a perfectly circular orbit, the eccentricity is 0; with increasing elongation of the orbit’s shape, the eccentricity increases toward a value of 1, the eccentricity of a parabola. What is the eccentricity of a straight line? […]

What is the difference between membrane potential and resting potential? For a cell’s membrane potential, the reference point is the outside of the cell. Because there is a potential difference across the cell membrane, the membrane is said to be polarized. If the membrane potential becomes more positive than it is at the resting potential, […]

What is 1 Joule equal to in Newton Metres? One joule equals the work done (or energy expended) by a force of one newton (N) acting over a distance of one meter (m). One newton equals a force that produces an acceleration of one meter per second (s) per second on a one kilogram (kg) […]

What forces act on a person jumping? Part II: The Jump Whether you are standing or jumping, the only external forces acting on your body are the normal force from the ground and gravity. How can you jump? Raising your center of mass into the air seems like it would require gravity to diminish or […]

Why is sediment transport important? Sediment transport is applied to solve many environmental, geotechnical, and geological problems. Measuring or quantifying sediment transport or erosion is therefore important for coastal engineering. Movement of sediment is important in providing habitat for fish and other organisms in rivers. What are two ways water transports sediment? How do rivers […]

What are the advantages of a dynamic microphone? Key advantages to a dynamic microphone: Rugged and able to handle high sound pressure levels, like those delivered by a kick drum. Provide good sound quality in all areas of microphone performance. They do not require a power source to run. They are relatively cheap. What do […]