write the ratio as a fraction in simplest form, with whole numbers with a numerator and a denominator 16 g to 40 g

Mathematics

2 answers:

kobusy [5.1K]3 years ago

8 0

16:40 as a fraction is 16/40. 16/40 is 4/10 simplified

jonny [76]3 years ago

8 0

Answer:

2/5

Step-by-step explanation:

You just find a common fact which is 4 and divide each of them by that and you get 4/10 which then simplifies to 2/5

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Martha is late for class, so she races her 75 kg body up a 4.0 meter flight of stairs in only 2.3 seconds. What is Martha’s powe

vovangra [49]

Answer:

$1.3\cdot 10^3\text{ J}$

Step-by-step explanation:

Power is defined by work over time. In physics, work can be defined as the energy transferred over from an applied force over some distance. As a formula:

$W=Fd$ , where F = force applied and d = distance that force is applied over.

*It is worth noting that F must be parallel to the distance travelled. If it is perpendicular, no work is done, and if it is at an angle, find the parallel component and use that for F.

In this case, the force applied must counter the force of gravity on Martha, which is given by $F_g=mg$ , where m = Martha's mass and g = gravitational constant 9.8 m/s/s. Therefore, $F_g=75\cdot 9.8=735\text{ N}$ . Since she raises her body 4.0 meters, the work done must be $W=Fd=735\cdot 4=2940\text{ J}$ .