The probability that the car will last less than 10 years would be .0062. With the given data (M = 12, SD = .8), i computed the z-score and looked it up on the z table. The answer yields .0062 or 0.62%. Thus, the probability is very little.

6 0

3 years ago

Suppose a skydiver (mass = 75kg) is falling toward the Earth. When the skydiver is 100m above the earth he is moving 60m/s. At t

sleet_krkn [62]

Answer:

Kinetic energy = 135 kJ

Potential energy = 73.5 kJ

Explanation:

Mass of sky diver = 75 kg

Velocity = 60 m/s

Height = 100 m

Kinetic energy is given by the expression, $KE = \frac{1}{2} mv^2$ , where m is the mass and v is the velocity.

So Kinetic energy = $\frac{1}{2} *75*60^2=135000J=135kJ$

Potential energy is given by the expression, PE =mgh, m is the mass, g is the acceleration due to gravity value and h is the height.

So, Potential energy = 75*9.8*100 = 73500J = 73.5 kJ

8 0

4 years ago

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