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3 years ago

Which of the following would be an example of positive eugenics?

Physics

2 answers:

mario62 [17]3 years ago

6 0

It would be A. performing DNA research to eliminate breast cancer.

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bija089 [108]3 years ago

3 0

Hello there.

Which of the following would be an example of positive eugenics?

A. Performing DNA research to eliminate breast cancer

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Does most psychologists believe that ESP exist

vodomira [7]

Answer:

Explanation:

most psychologists are skeptical of ESP and believe it's not real. There actually more skeptical of ESP than other scientists.

6 0

3 years ago

Kim is ice-skating going 4.6 m/s. What is her velocity after 10 seconds ?

MArishka [77]

This is a uniform rectilinear motion (MRU) exercise.

To start solving this exercise, we obtain the following data:

v = 4.6 m/s
d = ¿?
t = 10 sec

To calculate distance, speed is multiplied by time.

We apply the following formula: d = v * t.

We substitute the data in the formula: the speed is equal to 4.6 m/s, the time is equal to 10 s, which is left as follows:

$\bf{d=4.6\dfrac{m}{\not{s}}*10\not{s} }$

$\bf{d=46 \ m}$

Therefore, the speed at 10 seconds is 46 meters.

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2 years ago

Two cars collide inelastically and stick together after the collision. Before the collision, the magnitudes of their momenta are

dolphi86 [110]

Answer:

a) P1+P2

Explanation:

The magnitude of their combined momentum is just the addition of each momentum, because in this case of inelastic collision, the kinetic energy of the two cars are both converted to some form of energy because the velocity of both cars becomes zero, i.e., V=0, making P = mv = 0, this means the magnitude of P1 + P2 = 0.

3 0

3 years ago

A parallel-plate capacitor in air has a plate separation d = 4 mm and square plates with area A = 25.0 cm^2. The plates are main

Nikolay [14]

Answer: $179.79 \times 10^{-9} J$

Explanation:

Given

Separation (d)=4 mm

Area of cross-section $=25 cm^2$

Potential difference=255 V

$C=\frac{\epsilon A}{d}=5.53 \times 10^{-12}F$

charge $(Q)=CV=5.53\times 225=1411.10\times 10^{-12} C$

Energy stored $=\frac{cv^2}{2}$

$E=\frac{5.53\times 10^{-12} 255^2}{2}=179.79 \times 10^{-9} J$

3 0

3 years ago

A vertical tube one meter long is open at the top. It is filled with 75 cm of water. If the velocity of sound is 344 m/s, what w

alukav5142 [94]

Answer:

344Hz

Explanation:

First we need to more that the frequency will inky resonate in the portion not containing water. If the total length is 1m and the filled with water up to 75cm, the length of the air column will be 100cm - 75cm = 25cm

Fundamental frequency of a closed pipe fo = V/4L

V is the velocity of sound in air

L is the length of the air column

Given V = 344m/s

L = 25cm = 0.25m

fundamental resonant frequency = 344/4(0.25)

= 344/1

= 344Hz

7 0

3 years ago