Answer:
Soil erosion is a naturally occurring process that affects all landforms. In agriculture, soil erosion refers to the wearing away of a field's topsoil by the natural physical forces of water and wind or through forces associated with farming activities such as tillage.
Answer:
The magnetic force can act from a distance because of the magnetic field that is created around it. It can be defined as imaginary lines around the magnet upto which it has magnetic force.
If a piece of iron is put into the magnetic field but has a slight distance from the magnet, it will be pulled towards the magnet because it is in its magnetic field.
The south pole and the north poles of the magnet has effect on each other. Same poles repeal each other and opposite poles attract each other resulting in forming a field of attraction or repulsion.
The imaginary lines created are known as magnetic field which is responsible for the magnetic force from a distance.
Answer:
Explanation:
Period of oscillation ∝ √ m
So period of oscillation is proportional to square root of mass
So when mass increases , period too will be increased . But the total energy will remain the same as per conservation of energy.
Hence option ( D) is the correct answer.
Answer:
10Ω
Explanation:
The 10Ω resistors are in series, so their combined resistance is:
10Ω + 10Ω = 20Ω
The 8Ω resistors are in parallel, so their combined resistance is:
(1/8Ω + 1/8Ω)⁻¹ = 4Ω
This 4Ω resistance is in series with the 16Ω resistor, so the combined is resistance is:
4Ω + 16Ω = 20Ω
Finally, this 20Ω resistance and the first 20Ω resistance are in parallel, so the total equivalent resistance is:
(1/20Ω + 1/20Ω)⁻¹ = 10Ω
Answer : Resistance is 16 ohms.
Explanation :
It is given that,
Power of toaster,
Voltage,
According to ohm's law, V = I R
Mathematically power is defined as :
or
So, the resistance of the toaster is 16 ohms.
Hence, this is the required solution.