NECECITO ENTREGARLO EN 5 MINUTOS, AYUDENME AL MENOS CON DOS 4. Calcule la energía mecánica de un clavadista de 80 kg de una masa. Que se encuentra a 15 m de altura con respecto del suelo y que a esa altura tiene una velocidad caída de 10 m/s 5. Calcule la energía mecánica de una pelota de 0.3 kg que fue lanzada hacia arriba y en su punto más alto está una altura de 20 m

6. Suponga que un corredor parte del reposo y termina la carrera de los 100m en 14s ¿Cuál será la energía cinética del corredor en el instante en que se cruzará la meta?

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j