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3 years ago

A mother has the genotype Bb for brother green eyes, the months did heterozygous hair, what is the genotype of the father ?

Physics

1 answer:

natali 33 [55]3 years ago

7 0

Assuming brown hair (B) color is completely dominant over blond hair (b), then the father's genotype must be bb.

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a circular loop is hanging on the wall. it has a radius of 33.3 cm and is comprised of 12 coils. there is a magnetic field perpe

Vika [28.1K]

Answer:

I = 2.19A, anticlockwise direction.

Explanation:

Given r = 33cm = 0.33m, N = 12, ΔB = 7.5 - 1.5 = 6.0T, Δt = 3s, R = 3.75Ω

By Faraday's law of electromagnetic induction when there is a change in flux in a coil or loop, an emf is induced in the coil or loop which is proportional to the time rate of change of the magnetic flux through the loop.

The emf E is related to the flux by the formula

E = – NdФ/dt

Where N = number of turns in the coil, Ф = magnetic flux through the loop = BA, B = magnetic field strength, A = Area

In this problem the strength of the magnetic field changes. As a result the flux too changes and an emf is induced in the coil.

ΔФ = ΔB×A = ΔB×πr² = 6×π×0.33² = 2.05Wb

E = -NΔФ/Δt = 12×2.05/3 = 8.2V

I = E/R = 8.2/ 3.75 = 2.19A

The direction of the current can be found by pointing the thumb of your right hand in the direction of the magnetic field and curling the remaining fingers around this direction. The direction of the curl of these fingers give the direction of current which in this case is anticlockwise.

5 0

3 years ago

A 5000.0-kg car goes from 0 m/s to 70 m/s in 3600 seconds. What is the accelera

antiseptic1488 [7]

given:

mass = 5000 kg

u (initial velocity) = 0 m/s

v (final velocity) = 70 m/s

time taken to change velocity = 3600 s

acceleration = v - u / t

a = 70 - 0 / 3600

a = 70 / 3600

a = 0.0194 m/s2 (approx)

given: mass = 5000 kg

acceleration = 0.0194 (found in 1st part)

force = mass * acceleration

f = ma

f = 5000*0.0194 = 97 N

therefore the acceleration will be 0.0194 m/s2

and the force involved in acceleration will be 97 N

4 0

3 years ago

What force must be overcome to set an object in motion

forsale [732]

Newtons Law of motion
HOPE IT HELPS:)

8 0

3 years ago

Read 2 more answers

A student climbs to the top of the gym and drops a baseball to the ground below. A physics student standing nearby has a motion

sladkih [1.3K]

Answer:

The baseball was falling during 1.733 seconds.

Explanation:

The baseball experimented a free fall, which is a particular case of uniformly accelerated motion, in which object is accelerated by gravity. In this case, we need to determine the time spent by the ball before hitting the ground ( $t$ ), measured in seconds, which is determined by the following kinematic formula:

$t = \frac{v-v_{o}}{g}$ (1)

Where:

$v_{o}$ , $v$ - Initial and final speeds of the baseball, measured in meters per second.

$g$ - Gravitational acceleration, measured in meters per square second.

If we know that $v_{o} = 0\,\frac{m}{s}$ , $v = 17\,\frac{m}{s}$ and $g = 9.807\,\frac{m}{s^{2}}$ , then the time spent by the baseball is:

$t = \frac{17\,\frac{m}{s}-0\,\frac{m}{s} }{9.807\,\frac{m}{s^{2}} }$

$t = 1.733\,s$

The baseball was falling during 1.733 seconds.

6 0

3 years ago

What does the symbol in an electron dot diagram mean

sergey [27]

A lewis electron dot diagram (or electron dot diagram) is a representation of the valence electrons of an atom that uses dots around the symbol of the element. the number of dots equals the number of valence electrons in the atom.

7 0

3 years ago