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Start learning 50% faster. Sign in nowThe word hydroponics comes from the roots “hydro”, meaning water, and “ponos”, meaning labor.
Which part of a plant is responsible for photosynthesis?
Which instrument is used to measure electric current?
A spherical black body with a radius of 8 cm radiates 450-watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated...
Which of the following materials behaves as a dielectric?
The mass of a star is two times the mass of the Sun. How it will come to an end?
A machine does 600 J of work in 2 minutes. Find its power.
A dipole with moment p = 2i + 3j - 4k is placed at A(2, −3, 1). Find the electric potential at point B(4, −1, 0) in volts. (Use 1/(4 π ε0) = 9 × ...
Which of the following is an example of a non-renewable source of energy?
An electric bulb is rated 100 W and 220 V. What is the current through the bulb?
Two identical piano wires have same fundamental frequency when kept under the same tension. What will happen if tension of one of the wire is slightly i...