Answer:
Check below for answers and explanations.
At the maximum height, KE = 0 J
As the object returns, KE = PE = 500J
Explanation:
At the maximum height, the object momentarily stops, which means that the velocity at the maximum height is zero, i.e. v = 0
Since Kinetic Energy is give by:
KE = 0.5 mv^2
KE = 0.5 * 2 * 0
KE = 0 ( at Max height)
However at the peak, the PE = mgh
PE = 2 *9.8 * 25.51
PE = 500 J
As the object returns back to the ground, the Potential Energy is transformed to kinetic energy, which means that, KE = PE = 500J
Answer:
Increase
Explanation:
The best way for me to visualize the relation between wavelength, frequency, and energy is to think about actual ocean waves. Wavelength is a measure of the distance between two equivalent points on consecutive waves (think wave peak to wave peak). Lets say you are building a sand castle and want to see how many waves hit your castle over a period of 10 seconds. If the distance between each wave is 10 ft and the wave is traveling at 1 foot per second then you will only have one wave hit your castle. If the wavelength is 1/2 that (5 ft) then you will have 2 waves hit your castle in the same amount of time. This is the same concept behind waves in physics. The smaller the distance between each wave, the more waves and therefore more energy that will be delivered.
If the voltage and the resistance are known within the circuit, then you can use the formula:
Current = Voltage / Resistance
If you know the amount of charge going past a certain location in a certain amount of time, then you can find the current using:
Current = charge / time
Answer:
Explanation:
The wires are in circular shape . They have common center .
magnetic field due to circular wire is given by the formula
B = 
where I is current , r is radius of the coil .
magnetic field due to inner wire
= 
magnetic field due to outer wire
= 
These should be equal and opposite so that by cancelling each other , they create zero field.
=
I = 16.66 A
Direction of current should be in opposite direction ie anticlockwise when looking from above.
