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4 years ago

A characteristic controlled by one or more genes is called a what

1 answer:

4 0

I believe the answer would be polygenic. The word translates to "multiple genes". This occurs when many genes make up one specific thing such as our hair color or eye color.

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How the properties of sound waves change as they spread out in a spherical pattern

Vlad1618 [11]

It is when the air hit the wave and it moves to another direction.

6 0

3 years ago

PLEASE HELP MEE THIS IS DUE IN 45 MINS

guajiro [1.7K]

Answer:

The distance travelled does not depend on the mass of the vehicle. Therefore, $s = d$

Explanation:

This deceleration situation can be analyzed by means of Work-Energy Theorem, where change in translational kinetic energy is equal to the work done by friction:

$\frac{1}{2}\cdot m\cdot v^{2}-\mu\cdot m\cdot g \cdot s = 0$ (1)

Where:

$m$ - Mass of the car, in kilogram.

$v$ - Initial velocity, in meters per second.

$\mu$ - Coefficient of friction, no unit.

$s$ - Travelled distance, in meters.

Then we derive an expression for the distance travelled by the vehicle:

$\frac{1}{2}\cdot v^{2} = \mu \cdot g \cdot s$

$s = \frac{v^{2}}{\mu\cdot g}$

As we notice, the distance travelled does not depend on the mass of the vehicle. Therefore, $s = d$

3 0

3 years ago

calculate minimum number of incident photons per area and of the minimum dose needed to visualize an object of 1 mm squared usin

Lynna [10]

Answer:

minimum number of photon is 4.05 × $10^{7}$

Explanation:

given data

energy = 50 keV = 50 × $10^{3}$ eV = 50 × $10^{3}$ × 1.602× $10^{-19}$ J

thickness = 10^-3

contrast = 1%

to find out

number of incident photons

solution

we know here equation that is

E = n × h × ν .......................1

put here all these value

50 × $10^{3}$ = n × 6.6× $10^{-34}$ × c/ 1× $10^{-3}$

50 × $10^{3}$ × 1.602× $10^{-19}$ = n × 6.6× $10^{-34}$ ×( 3 × $10^{8}$ / 1× $10^{-3}$ )

solve it and find n

n = 4.05 × $10^{7}$

so here minimum number of photon is 4.05 × $10^{7}$

3 0

3 years ago

An electron moving in a wire collides again and again with atoms and travels an average distance between collisions that is call

hoa [83]

Explanation:

A substance with a short , medium, free path has improved electron flow resistance and a higher electrical resistance . Heat applications impose more molecular chaos on all materials and shorten the track further, increasing resistance of most materials. So, just refresh the material to expand the course. In certain materials, when cooled to the minimum temperature, the conductivity is substantially increased.

4 0

3 years ago

In a series circuit, an ammeter shows the current leaving the positive end of a cell is 0.5A. What current flows into the negati

Evgesh-ka [11]

Answer:

0.5A as in a series circuit the current is the same everywhere

Explanation:

5 0

3 years ago