What are the examples of primary and secondary cells? Primary batteries are “single use” and cannot be recharged. Dry cells and (most) alkaline batteries are examples of primary batteries. The second type is rechargeable and is called a secondary battery. Examples of secondary batteries include nickel-cadmium (NiCd), lead acid, and lithium ion batteries. What is […]
What is responsible for surface currents?
What is responsible for surface currents? Surface currents in the ocean are driven by global wind systems that are fueled by energy from the sun. Currents may also be caused by density differences in water masses due to temperature (thermo) and salinity (haline) variations via a process known as thermohaline circulation. How do currents affect […]
What is the minimum number of non zero vectors in different planes that can be added to give a resultant of zero?
What happens when the mass is doubled?
What happens when the mass is doubled? If the net force on an object is doubled, its acceleration will double If the mass of an object is doubled, the acceleration will be halved . What is the kinetic energy of doubled and doubled? Answer. If velocity is doubled, Kinetic Energy increases by 4 times. What […]
Is it OK to leave a block heater plugged in overnight?
What happens to the potential energy when a spring is compressed?
What happens to the potential energy when a spring is compressed? When a spring is compressed or stretched, potential energy energy of the spring increases in both the cases. This is because work is done by us in compression as well as stretching. How does the potential energy of a spring change if its amount […]
What is the best thing to preserve rubber?
What is the best thing to preserve rubber? Keeping that rubber from drying out, getting brittle and cracking is quite important. Silicone based lubricants are great. They don’t deteriorate the rubber like petroleum based products can, but they do coat the rubber and repel moisture. They even help somewhat with rejuvenating rubber that has dried […]
Why are my oak trees not producing acorns?
Why are my oak trees not producing acorns? Because oaks are wind-pollinated, weather conditions can greatly affect fruit set. Frequent rains at the time when oak catkins are shedding pollen in spring reduces pollination efficiency, as does calm, windless weather. If pollen can’t get from the male catkins to the female flowers, acorn production will […]
Is ROY G BIV real?
Is ROY G BIV real? Roy G Biv, a mnemonic for remembering red, orange, yellow, green, blue, indigo, and violet, can’t exist if color physicists don’t recognize indigo as a color of the visible spectrum. Apparently Newton decided on the number seven before determining the colors. Is Indigo a real color? Indigo is a rich […]