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3 years ago

Help plssssss asap:(((

Physics

2 answers:

horrorfan [7]3 years ago

7 0

Answer:

5 blocks south

Explanation:

polet [3.4K]3 years ago

5 0

Answer:

5 blocks south

Explanation:

She ran 8 block south, then 3 blocks north.

8 - 3 = 5.

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Why are there variations of traits within a population?

nydimaria [60]

Answer:

The variation and distribution of traits in a population depend on genetic and environmental factors. Genetic variation can result from mutations caused by environmental factors or errors in DNA replication, or from chromosomes swapping sections during meiosis.

Explanation:

Hope this helps!

3 0

3 years ago

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The effect of mechanical work on an object is _. (complete the sentence.)

Advocard [28]

Answer:

Displacement (i.e. change in its final position)

Explanation:

In classical mechanics work is described as the displacement of the body in the direction of the applied force.

<u>Mathematically given as:</u>

$W=F.s\ cos\ \theta$

where:

F = force on the body

s = displacement of the body

θ = angle between the force and direction of displacement

While force, acceleration, velocity can also be the answer for the blank space but the displacement effect is visible during and even after the work has been done, so one can notice the change in position of the object even when the person has not seen the process but just the initial condition of the body.

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3 years ago

Is Nuclear Energy renewable or nonrenewable? Use in your own words.

Talja [164]

It is non renewable because at nuclear power plants, the steam is created from the heat that produced from the plant. Because it is produced from a source that is not automatically renewable over the time, it is considered not to be a renewable source.

5 0

2 years ago

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Fred has a very detailed model of the solar system where each planet is made out of granite rock. Since his little sister really

Jet001 [13]

Since color can be noticed without picking either model up, the answer would be density. This is definitely evident because Styrofoam is less dense than granite.

6 0

3 years ago

A magnetic field is uniform over a flat, horizontal circular region with a radius of 2.00 mm, and the field varies with time. In

Shkiper50 [21]

Answer:

0.00016391 V

0.00038665 V

Explanation:

r = Radius = 2 mm

$B_i$ = Initial magnetic field = 0

$B_f$ = Final magnetic field = 1.5 T

t = Time taken = 115 ms

Induced emf is given by

$\varepsilon=\frac{d\phi}{dt}\\\Rightarrow \varepsilon=\frac{A(B_f-B_i)}{dt}\\\Rightarrow \varepsilon=\frac{\pi 0.002^2(1.5)}{0.115}\\\Rightarrow \varepsilon=0.00016391\ V$

The magnitude of the induced emf is 0.00016391 V

$B_i=+1.5\ T$

$B_f=-0.5\ T$

t = 65 ms

$\varepsilon=\frac{d\phi}{dt}\\\Rightarrow \varepsilon=\frac{A(B_f-B_i)}{dt}\\\Rightarrow \varepsilon=\frac{\pi 0.002^2(-0.5-1.5)}{0.065}\\\Rightarrow \varepsilon=-0.00038665\ V$

The magnitude of the induced emf is 0.00038665 V

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3 years ago