To solve this problem we will apply the concepts related to potential gravitational energy. This is defined as the product between mass, acceleration and change in height and can be expressed as,

Here,
m = Mass
g = Gravitational acceleration
= Height
Replacing with our values we have,


Therefore the change in gravitational potential energy is 883J.
Explanation:
equation is speed=distance/time
so 9.5km/1.5 equals 6.3km/h
Answer:

Explanation:
From the question we are told that:
Length 
Voltage 
Frequency 
Generally the equation for maximum Electric Field is mathematically given by



Answer:
3.3 lambda
Explanation:
Velocity = frequency * wave length
Wave length = velocity / frequency
Wave length = 330/100
Wave length = 3.3 lambda