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3 years ago

Draw a conclusion, based on the solubility curves shown above, of which compound would have the greatest

Physics

1 answer:

Colt1911 [192]3 years ago

3 0

Answer: The answer is D. KNO3

Explanation:

The graph shows that the KN03 going straight up from the temperature sign so you reversed that so that it will make it to 90°C to 30°C

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A satellite’s original velocity is 10,000 m/s. After 60 seconds it s going 5,000 m/s. What is the acceleration? Remember acceler

alexira [117]

Explanation:

Given that,

Orginal speed, u = 10,000 m/s

Final speed, v = 5,000 m/s

Time, t = 60 s

To find,

Acceleration of the satellite.

The acceleration of an object is equal to the change in its speed divided by time. So,

$a=\dfrac{v-u}{t}\\\\a=\dfrac{5000-10000}{60}\\\\a=-83.34\ m/s^2$

So, the acceleration of the satellite is $83.34\ m/s^2$ and it is deaccelerating.

8 0

4 years ago

what is the acceleration of a softball if it has a mass of 0.50kg and hits the catcher’s glove with a force of 25 N

Kitty [74]

Answer:

mass=0.50kg

force=25N

acceleration =?

Now,

force=m×a

25=0.50×a

25÷0.50=a

50=a

acceleration =50m/s^2 answer!!!!

hope this may help you!!!!

3 0

3 years ago

A compact car has a mass of 1380 kg . Assume that the car has one spring on each wheel, that the springs are identical, and that

astraxan [27]

Answer:

A) $k=34867.3384\ N.m^{-1}$

B) $\omega'\approx84\ Hz$

Explanation:

Given:

mass of car, $m=1380\ kg$

frequency of spring oscillation, $f=1.6\ Hz$

We knkow the formula for spring oscillation frequency:

$\omega=2\pi.f$

$\Rightarrow \sqrt{\frac{k_{eq}}{m} } =2\pi.f$

$\sqrt{\frac{k_{eq}}{1380} } =2\times \pi\times 1.6$

$k_{eq}=139469.3537\ N.m^{-1}$

Now as we know that the springs are in parallel and their stiffness constant gets added up in parallel.

<u>So, the stiffness of each spring is (as they are identical):</u>

$k=\frac{k_{eq}}{4}$

$k=\frac{139469.3537}{4}$

$k=34867.3384\ N.m^{-1}$

given that 4 passengers of mass 70 kg each are in the car, then the oscillation frequency:

$\omega'=\sqrt{\frac{k_{eq}}{(m+70\times 4)} }$

$\omega'=\sqrt{\frac{139469.3537}{(1380+280)} }$

$\omega'\approx84\ Hz$

7 0

4 years ago

A woman lifts her 120 newton child up one meter and carries her for a distance of 50 meters to the child's bedroom. How much wor

Veseljchak [2.6K]

Answer:

make the child walk by itself

Explanation:

duh

7 0

3 years ago

An object has a mass of 8.00 kg what is the gravitational force on the object on earth

mamaluj [8]

Weight, in physics elaborately is a type of force which pertains to the gravitational attraction of the earth and the mass of the object.

Hence, the formula for weight is mass x gravity.

Mathematically - w = m x g

Solution:
Mass = 8 kg
Gravity = 10 m/s2

Weight = 10 x 8
Weight = 80 kg*m/s2 or 80N

Therefore the weight of the 8 kg object is 80 newton.

6 0

4 years ago