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3 years ago

Mrs. Summerlin jogs around a 250 m track twice. What is her distance?

Physics

1 answer:

Ne4ueva [31]3 years ago

5 0

Answer:

distance 0,5km

this is the answer

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The Celsius temperature scale is based on which of the following

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A baseball rolls along a flat parking lot in a straight line at a constant speed of 3.8 m/s. How

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This is a uniform rectilinear motion (MRU) exercise.

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

V = 3.8 m/s
D = ¿?
T = 15 sec

To calculate the distance, multiply the speed by the time.

We apply the following formula: d = v * t

We clear our data in the formula:

$\bf{d=3.8\dfrac{m}{\not{s}}*15 \not{s} }$

$\bf{d=57 \ m}$

The baseball in 15 seconds will roll a distance of 57 meters.

<h2>{ Pisces04 }</h2>

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2 years ago

Jupiter's satellite Europa orbits Jupiter with a period of 3.55 d at an orbital radius of 6.71 108 m (assume the orbit to be cir

yawa3891 [41]

Answer:

(a)

M = 1.898 x 10^27 kg

(b)

v = 13.74 km/s

Explanation:

Time period, T = 3.55 days = 3.55 x 24 x 3600 second = 306720 s

Radius, r = 6.71 x 10^8 m

G = 6.67 x 10^-11 Nm^2/kg^2

(a) $T=2\pi \sqrt{\frac{r^{3}}{GM}}$

$M=\frac{4\pi ^{2}r^{3}}{GT^{2}}$

$M=\frac{4\times3.14^{2}\times 6.71^{3}\times 10^{24}}{6.67\times 10^{-11}\times 306720^{2}}$

M = 1.898 x 10^27 kg

(b) Let v be the orbital velocity

$v=\frac{2\pi r}{T}$

$v=\frac{2\times 3.14\times 6.71\times 10^{8}}{306720}$

v = 13739.5 m/s

v = 13.74 km/s

(b) The gravitational field E is given by

$E = \frac{GM}{r^{2}}$

$E = \frac{6.67\times10^{-11}\times 1.898\times 10^{27}}{6.71^{2}\times 10^{16}}$

E = 0.28 N/kg

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3 years ago

Are sinkhole fatalities common?

Brut [27]

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Sinkhole fatalities are rare, but they do occur sometimes. Also fatalities are more likely where sinkholes are common. For example, sinkholes are more common in Florida than in California, so you would more likely die from a sinkhole in Florida than you would in California.

Hope this helps!

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