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Here, by equating the formula for the kinetic energy of the rocket to the gravitational potential energy, the student would realize after deriving the speed, that the its mass vanishes, therefore making t...

To start, the equation to use can be identified as the capactior discharge equation V(t) = V_maxe^-t/RC. From here, we can see that this equation can be solved to give capacitance, and...

Since there is no loss of energy to air resistance and the apple is freely falling under the influence of gravity, this is an example where we can apply the principle of conservation of energy. In the ini...

We have values for the mass and the acceleration of the van, so we can work out the resultant force acting on it using Newton’s second law: F_r = ma F­_r­ = 2150 x 3 = 6450N Driving fo...

F=Eq= 5x10^2 x 1.6x10^-19 = 8x10^-17 N

Kinetic energy theory: deltaEc= Fxd =1/2mv^2

thus v= squareroot(2xFxd/m)

v(proton) = squareroot(2x8x10^-17x1x10^-2/9.1x10^-31)=1.3x 10^6 m/s