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neonofarm [45]
3 years ago
5

A 2 kilogram rabbit starts from rest and is moving at 6m/s after 3 seconds. What net force must be exerted on the rabbit (by the

ground) to cause this change in speed?
Physics
1 answer:
horrorfan [7]3 years ago
8 0
A = (Vf-Vi) / t,
a = (6-0)/3 = 2m/s^2,

F = ma = 2 * 2 = 4N
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Which statements provides evidence that the earth revolves around the sun
Aloiza [94]

Answer:

Different star constellations are visible from Earth at different seasons of the year.

Explanation:

The reason the fact that we can see different constellations in the sky during different seasons on earth is the most compelling reason we travel around the sun is because if the sun travelled around the earth, certain constellations would only be visible in certain places. You’d have to travel to see certain ones.

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4 0
4 years ago
To meet a U.S. Postal Service requirement, employees' footwear must have a coefficient of static friction of 0.5 or more on a sp
Vlada [557]

Answer:

the minimum time interval is 0.77 seconds

Explanation:

given data

coefficient of static friction = 0.5

coefficient of static friction shoes= 0.825

travel s = 2.40 m

to find out

what is the minimum time interval

solution

we know newton 2nd law

force = mass × acceleration

and

force acting on person due to friction

force = coefficient of static friction shoes × mg

so we can say

coefficient of static friction shoes × mg = ma

so

a = coefficient of static friction shoes × g

and we know g is 9.8 m/s²

so

distance formula by kinematic relation

distance = ut + 0.5 × at²

here put a value and u is zero because initial speed

2.40 = 0 + 0.5  × coefficient of static friction shoes × g× t²

2.40 = 0.5  × 0.825 × 9.8 × t²

t = 0.77 s

the minimum time interval is 0.77 seconds

5 0
3 years ago
the speed of light in a certain medium is 0.6c. find critical angle , if the index of refraction is 1.67​
baherus [9]

Answer:

\theta_c = 36.78^o

Explanation:

The relationship between the refractive index and the critical angle is given as follows:

\eta = \frac{1}{Sin\ \theta_c} \\\\Sin\ \theta_c = \frac{1}{\eta}\\\\\theta_c = Sin^{-1}(\frac{1}{\eta} )

where,

η = refractive index = 1.67

θc = critical angle =?

Therefore,

\theta_c = Sin^{-1}(\frac{1}{1.67} )

\theta_c = 36.78^o

4 0
3 years ago
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Anika [276]

Answer:

https://www.google.com/search?q=A+metal+sphere+is+neutral+because+it+has+an+equal+number+of+protons+and+electrons.+Draw+how+the+charges+in+the+sphere+are+redistributed+when+a+negatively+charged+rod+is+brought+near+it.&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiixouw2IDiAhUIbawKHaYzBaMQ_AUIDigB&biw=1455&bih=688#imgrc=3YSBhnGs0Hz80M:

go here

6 0
3 years ago
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Corresponding propositions cannot both be false.
Fofino [41]

Answer:

Suggestions are opposite when the two of them can't be valid. An A suggestion, e.g., "all giraffes have long necks" can't be valid simultaneously as the comparing E recommendation: "no giraffes have long necks." Note, in any case, that relating An and E suggestions, while opposite, are not conflicting.

Explanation:

8 0
4 years ago
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