If we shake the branches of a tree, the fruits fall​

Answer:

True

Explanation:

There are two major pure substances in Chemistry namely: elements and compounds. Elements are substances made up of only one type of atom which cannot be broken down. For example, H2 symbolizing hydrogen gas is an element.

On the other hand, atoms of different elements can combine together and be held by chemical bonds to form substances called COMPOUNDS. Hence, a compound is pure substance made of more than one type of element bound together in fixed ratios. For example, Al2O3 is a compound comprising of elements Al (aluminum) and O (oxygen) in a fixed ratio of 2:3.

Answer:

For starters the membrane voltage is the same in nerve cells as in muscle cells.

As for skin and muscle cells, both cells arise from the same type of embryonic layer, the ectoderm and both which produces energy, though skin cells eventually lose their organelles.

Answer:

When work is being done, the practie of labor is being performed. When work isn't being completed, this is a sign of procrastination.

Explanation:

In the answer.

Answer:

D- energy is being transferred

Explanation:

Answer:

Twice the work needed to lift the 20cm object

Explanation:

Work done is derived using the expression below;

  Work done  = Force x distance

For this problem, we are lifting through a vertical height;

  Work done  = mg x h

 mg is the weight of the body;

Since both bodies have the same weigh;

   W1 is the workdone to lift 20cm

   W2 is the workdone to lift 40cm

   For the first lift;

         W1  = (mg) x 20cm

         (mg)  = [tex]\frac{W1}{20}[/tex]  

   For the second lift;

          W2  = (mg)  x 40cm

   Since they both have the same weight

          (mg)  = [tex]\frac{W2}{40}[/tex]  

Equating the two weights;

      [tex]\frac{W1}{20}[/tex]   =  [tex]\frac{W2}{40}[/tex]  

     20W2  = 40W1

          W2  = [tex]\frac{40W1}{20}[/tex]   = 2W1

Answer: The connection between the two is that potential energy transforms into kinetic energy.

Explanation:

Answer:

Dy = - 0.0789 [m]

Explanation:

The vertical component of the vector can be determined with the sine of the angle.

Dy = 0.250*sin(18.4)

Dy = 0.0789 [m]

As the y-component is pointing downwards the component is negative.

Dy = - 0.0789 [m]

Answer:

6.25 m/s

Explanation:

Given parameters

Initial mark = 65

Final mark  = 15

time taken = 8s

Unknown:

Velocity of the runner  = ?

Solution:

Velocity is the displacement divided by time;

        Velocity  = [tex]\frac{displacement}{time}[/tex]  

Displacement  = Initial mark - final mark  = 65 - 15 = 50m

Now, insert the parameters and solve;

       Velocity  = [tex]\frac{50}{8}[/tex]   = 6.25m/s

Answer:

True

Explanation:

It may be seen as a statement about inertia, that objects will remain in their state of motion unless a force acts to change the motion. Any change in motion involves an acceleration, and then Newton's Second Law applies.

- Hyperphysics

Answer:

true

Explanation:

because that's the answer

Initial velocity (u) = 10.8 m/s

Final velocity (v) = 3.7 m/s

Acceleration (a) = -2.67 m/s²

By using equation of motion, we get:

[tex] \bf \longrightarrow v = u + at \\ \\ \rm \longrightarrow 3.7 = 10.8 + ( - 2.67)t \\ \\ \rm \longrightarrow 10.8 - 2.67t = 3.7 \\ \\ \rm \longrightarrow (10.8 - 10.8) - 2.67t = 3.7 - 10.8 \\ \\ \rm \longrightarrow - 2.67t = - 7.1 \\ \\ \rm \longrightarrow \dfrac{ - 2.67}{ - 2.67} t = \dfrac{ - 7.1}{ - 2.67} \\ \\ \rm \longrightarrow t = 2.6 \: s[/tex]

[tex] \therefore [/tex] Time taken (t) = 2.6 s

Answer:

2mg+o2--->2mgo

2moles of mg react with one mole of o2 to form 2 moles of mgo

given 2.5moles of o2 hence 5moles of mg will react

Answer:

hjkjjjrjebdbnnd heudhdb

Answer:

unmmmmmmmm I think the answerA

Answer:

c

Explanation:

Answer:

4km

Explanation:

Distance=speed x time

Knowing this we know the time and speed

so it is 8 x .5= D

And 8 x .5 =4

If you have any questions let me know

Answer:

B1 and A2

Explanation:

the first one would be B because put 4 into mass times it by the velocity divide it by half because of the radius so the ending result would be 4

number 2 would be  A because just input the numbers by the mass, velocity etc.) then any number  that needs to be divided for an example radius would have to divide so you divide to get the answer.

Hello there,

Answer: The answer to you're question is B.) carrying nutrients to and within cells.

Explanation: Water's extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable of life sustaining force. On a biological level, water's role as a solvent helps cells transport and use substances like oxygen or nutrients. Catch this, water helps take the toxins out of your body. Water also helps you from getting sick. Plus, the brain is 90% water. So, drink that water..... :3

Answer:

Kinetic energy increases and potential energy decreases when the velocity of an object increases

Answer:

I believe the answer is B.

Explanation:

Newton's First Law of Gravity states, "The greater the weight (or mass) of an object, the more inertia it has. Heavy objects are harder to move than light ones because they have more inertia. "

The answer is D.

All objects travel at the same speed due to gravity.

I hope I helped! Sorry if my inference was incorrect.

Answer:

This is easy. You subtract the final temperature from the starting temperature to find the difference. So if something starts at 50 degrees Celsius and finishes at 75 degrees C, then the change in temperature is 75 degrees C – 50 degrees C = 25 degrees C. For decreases in temperature, the result is negative.

Answer:

NEGATIVE

Explanation:

Answer:

Explanation:

How would this number be expressed in scientific notation? 1.898^27 kg. ...

Answer:

15.7m/s

Explanation:

To solve this problem, we use the right motion equation.

 Here, we have been given the height through which the ball drops;

 Height of drop = 14.5m - 1.9m  = 12.6m

The right motion equation is;

      V²  = U² + 2gh

V is the final velocity

U is the initial velocity  = 0

g is the acceleration due to gravity  = 9.8m/s²

h is the height

  Now insert the parameters and solve;

       V² = 0² + 2 x 9.8 x 12.6

      V²  = 246.96

       V = √246.96  = 15.7m/s

Answer:

The reason is because a heat pump uses external power to accomplish the work of transferring energy from the heat source to the heat sink. Heat pumps are significantly more energy efficient than simple electrical resistance heaters. The efficiency begins to decrease as the temperature difference between the heat source and sink increases.

Answer:

m per second is the answaegnzxn

Answer:

?? what

Explanation:

The momentum of the bowling ball at the point where it reaches a speed of 3.6 m/s is 22.3 Kg.m/s (Option C)

Momentum is defined as the product of mass and velocity. It is represented mathematically as:

Momentum = mass × velocity

Now, we can obtain the momentum of the bowling ball at the point where it reaches a speed of 3.6 m/s. Details below:

Momentum = mass × velocity

Momentum =  6.2 × 3.6

Momentum = 22.3 Kg.m/s

Thus, the momentum at the point is 22.3 Kg.m/s (Option C)

Learn more about momentum:

https://brainly.com/question/14256203

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