The space shuttle fleet was designed with two booster stages. if the first stage provides a thrust of 53 kilo-newtons and the space shuttle has an acceleration of 18,000 miles per hour squared, what is the mass of the spacecraft in units of pounds-mass?

To solve this problem we will apply Newton's second law, which indicates that the force is equivalent to the product between mass and acceleration, so

Here,

F= Force

m = Mass

a = Acceleration

Rearranging to find the mass we have,

The value of the acceleration is

Replacing to find the mass,

Now in ponds this value is

Therefore the mass of the spacecraft is 52.8lb

two charges are fixed in place on the x-axis as shown. the charge at x = 0 is negative and has magnitude q = 2 μcoulombs (1 μcoulomb = 10-6 coulombs). the charge at x = d, (d = +12 cm), is positive and has magnitude q = 4 μcoulombs. find a point x = xo along the x-axis at which the electric field is zero.

0.3x0.21x0.08kg=mass 1 sheet

mass 500 = 500xmass 1

volume pile = 0.3x0.2x0.048

density=mass/volume= 500xmass 1/0.3x0.2x0.048

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