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3 years ago

A star has a size of 0.1 solar radius. How many times larger is the sun than the star?

2 answers:

8 0

-- The sun's diameter is 10 times as large as that star's diameter.

-- The sun's surface area is 100 times as large as that star's surface area.

-- The sun's volume is 1,000 times as large as that star's volume.

IgorC [24]3 years ago

7 0

The sun is 10 times larger than the star.

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If Mrs. Reichelt throws a chromebook, because it won't login correctly, with a force of 8N, and the chromebook accelerates at 5m

suter [353]

Answer:

1.6 kg

Step-by-step Solution:

Since Force = mass × acceleration we have:

F = 8N

a= 5 m/s^2

m = ?

By plugging the values above into F=ma we obtain:

$F=ma\\\\8=m(5)\\\\\frac{8}{5}=\frac{m(5)}{5}\\\\m=\frac{8}{5}=1.6$

Therefore, the Chromebook has a mass of 1.6 kilograms.

7 0

3 years ago

How does an inclined plane change distance and how does it change direction

ElenaW [278]

Objects are known to go down because of a unbalanced force

7 0

3 years ago

A 40.0 kg wagon is towed up a hill inclined at 18.5 degrees with respect to the horizontal. The tow rope is parallel to the incl

sp2606 [1]

Answer:

7.9m/s

Explanation:

We are given that

Mass of wagon=40 kg

$\theta=18.5^{\circ}$

Tension= $140 N$

Initial velocity of wagon= $u=0$

Displacement=s=80 m

Net force applied on wagon= $F=T-mgsin\theta=140-40(9.8)sin18.5=15.7 N$

By using $g=9.8m/s^2$

$a=\frac{F}{a}=\frac{15.7}{40}=0.39m/s^2$

We know that

$v^2-u^2=2as$

Using the formula

$v^2=2\times 0.39\times 80$

$v=\sqrt{2\times 0.39\times 80}=7.9m/s$

5 0

3 years ago

Please help with part b. I need to find the speed.

Elena-2011 [213]

It would be 2 to 4 seconds (:

7 0

3 years ago

A steel needle when placed carefully on water can be made to float.when the detergent is added to the water it sink.explain the

Dvinal [7]

Answer:

The surface tension of plain water can cause a needle to float.

Evidently, the addition of detergent to the water reduces the surface tension of the liquid causing the needle to sink.

7 0

2 years ago