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3 years ago

After a teaspoon of sugar has been stirred into a glass of water, no solid sugar can be seen. What happened to the sugar?

Physics

2 answers:

baherus [9]3 years ago

8 0

Answer:

B. The sugar dissolved

Explanation:

Sugar dissolves in water. It can't disappear, or evaporate because it's a solid.

Mariana [72]3 years ago

4 0

Answer:

B. The sugar dissolved

Explanation:

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Which forces are acting on the shoe as you drag it across the floor?

densk [106]

Answer:

I put friction and applied

Explanation:

6 0

2 years ago

A 6.25-kg bowling ball moving at 8.95 m/s collides with a 0.95-kg bowling pin, which is scattered at an angle of θ = 27.5° from

Archy [21]

Answer:

-6.34 degrees.

Explanation:

Because this is a collision we can use the formula of linear momentum conservation.

$m_1*v_{o1}+m_2*v_{o2}=m_1*v_{f1}+m_2*v_{f2}$

The pin has an angle so it has two components of velocity, so:

$v_x=V*cos(\theta)\hat{i}\\v_y=V*sin(\theta)\hat{j}\\\\v_x=11.6*cos(27.5^o)=(10.3m/s)\hat{i}\\v_y=11.6*sin(27.5^o)=(5.4m/s)\hat{j}$

applying the first formula:

$6.25kg*(8.95m/s)\hat{i}+0=6.25kg*v_{f}+0.95kg*(10.3m/s(\hat i)+5.4m/s(\hat j))\\\\v_f=\dfrac{6.25kg*(8.95m/s)\hat{i}-0.95kg*(10.3m/s(\hat i)+5.4m/s(\hat j))}{6.25kg}\\v_f=7.38m/s(\hat i)-0.82m/s(\hat j)$

The angle is given by:

$\theta_b=acrtg(\dfrac{v_f(\hat j)}{v_f(\hat i)})\\\\\theta_b=arctg(\frac{-0.82m/s}{7.38m/s})\\\theta_b=-6.34^o$

the angle is -6.34 degrees.

4 0

3 years ago

Moment of inertia: A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass and length

LekaFEV [45]

Answer:

B.Less than

Explanation:

We are given that

Mass of each object=m

Length of rod=r

$I_1$ =Moment of inertia of the dumbbell shaped object with respect to an axis passing through the center of the rod and perpendicular to it.

$I_2$ =Moment of inertia with respect to an axis passing through one of the masses.

$I_1=\frac{mr^2}{4}+\frac{mr^2}{4}$

$I_1=\frac{2mr^2}{4}=\frac{1}{2}mr^2$

$I_2=mr^2$

$I_2>I_1$

Hence, $I_1$ is less than $I_2$

B.Less than

3 0

3 years ago

Which of the following has the most biomass? a. quaternary consumers b. secondary consumers c. primary consumers d. producers

elena-s [515]

<h3><u>Answer;</u></h3>

<em>Producers </em>

<h3><u>Explanation;</u></h3>

<u><em>Producers </em></u>occupy the lowest level in any food chain or food web. They are the organisms that all other organisms in the food chain rely on.
<em><u>Producers </u></em>have the ability to make their own food through the process of photosynthesis where they use energy from sunlight, together with water and carbon dioxide to generate food.
The ability of producers to make their own food and the fact that they occupy the lowest level in a food chain means <em><u>they have the highest biomass.</u></em>

4 0

4 years ago

Read 2 more answers

Which of the following does not exist in a command economy

vodomira [7]

The answer is c or d mainly d

3 0

4 years ago