A 6.46 kg object moving with a velocity of 5.23 m/s is struck from behind by a moving 11.77 kg object. They stick together, moving off with a mutual velocity of 17.93 m/s. What was the original velocity of the 11.77 kg object before the collision?

Answer:

Evolution, mutation of genes

Explanation:

Evolution is the primary reason of undergo changes in speicies.There is also another reason why, which is the genetic mutation a creature has, like a toad becomes albino.

Answer:

32

Explanation:

Answer:

There's nothing quite like placing random objects through some computational fluid dynamics software. As we can see, the forehead of the cow experiences a zone of high pressure, since a lot of the air is deflected from the front of the nose and straight to the head.

Explanation:

Answer: Force

Explanation: Force is defined as a push or pull acting on an object

Answer:

Force is defined as a push or pull acting on an object. Forces include gravity, friction, and applied force. Force causes changes in the speed or direction of motion. These changes are called acceleration.

Explanation:

We have that from the options, the  force require to move the table will be the Reaction force.i.e the force that will get a reaction out of the table i.e is Motion

The reaction force on the box

Correct  Option is C

From the question we are told

Lien is pushing a box across a table. She used a force of 100 N to get the box moving

Generally The Force Requird to Move a table is greater than the contiunes force applied to it to en sure it contines in Motion.

Having said that Newtons Third law states for every action there most be an equal and opposite reaction

Therefore

From The options the  force require to move the table will be the Reaction for.that is the force that will get a reaction out of the table i.e is Motion

Correct  Option is C

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Answer:

C

Explanation:

the periodic table of elements only consist of elements and all of the elements found in the world

Answer:

I) Name of State of Matter: Solid

a) Property of this State of Matter: Definite shape and volume.

b) Property of this State of Matter: Generally have a higher density.

c) Property of this State of Matter: Diffusion of one solid into another solid is characteristically slow.

II) Name of State of Matter: Liquid

a) Property of this State of Matter: Definite volume but no definite shape.

b) Property of this State of Matter: Vaguely compressible; Barely compressible.

c) Property of this State of Matter: Flow from a higher level to a lower level.

III) Name of State of Matter: Gas

a) Property of this State of Matter: Easily compressible.

b) Property of this State of Matter: Expand to fill containers.

c) Property of this State of Matter: They are able to occupy far more space than liquids or solids.

Answer:

The  theree state of  matter is

1.solid.

2.liquid.

3.gas.

Explanation:

Answer:

180

Explanation:

i think

Answer:

So if an object of mass m is raised through a height h, the work done on the object is equal to mgh, and so this amount of energy is transferred to the object. (Notice that this equation is identical to the one describing an object falling under gravity, Equation

Answer:

The horizontal range is maximum when θ is equal to 45°

Explanation:

Projectile Motion

It's known as the type of motion that experiences an object that is projected near the Earth's surface and moves along a curved path exclusively under the action of gravity.

Being vo the initial speed of the object, θ the initial launch angle, and [tex]g=9.8\ m/s^2[/tex] the acceleration of gravity, then the maximum horizontal distance traveled by the object (also called Range) is:

[tex]\displaystyle d={\frac {v_o^{2}\sin(2\theta )}{g}}[/tex]

Since the sine of an angle is bounded between -1 and 1, the maximum range will occur when the sine is 1:

[tex]\sin(2\theta)=1[/tex]

The only angle between 0° and 360° whose sine is 1 is 90°, thus:

[tex]2\theta=90^\circ[/tex]

Solving:

[tex]\theta=45^\circ[/tex]

The horizontal range is maximum when θ is equal to 45°

The horizontal range is maximum for the value of angle equivalent to [tex]45^{\circ}[/tex].

Given data:

The player kicks the ball with an angle [tex]\theta[/tex] with the horizontal.

The given problem is based on the concept and fundamentals of projectile motion. In a projectile motion, the horizontal range is the horizontal distance covered by an object during its trajectory.

The mathematical expression for the horizontal range is given as,

[tex]R = \dfrac{u^{2}sin2 \theta}{g}[/tex]

Here,

R is the horizontal range.

u is the initial speed.

And g is the gravitational acceleration.

Clearly, if we need maximum horizontal range, then we need to have the maximum value of sine. So if,

[tex]\theta =45^{\circ}[/tex]

[tex]sin2 \theta=sin90[/tex] = 1

So the maximum range is,

[tex]R = \dfrac{u^{2}sin(2 \times 45^{\circ})}{g}\\\\R = \dfrac{u^{2} \times sin 90^{\circ}}{g}\\\\R = \dfrac{u^{2}}{g}[/tex]

Thus, we can conclude that the horizontal range is maximum for the value of angle equivalent to [tex]45^{\circ}[/tex].

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Answer:

A) acceleration because it's definitely change in velocity definition

Answer:

640 m.

Explanation:

The following data were obtained from the question:

Acceleration (a) = –20 m/s/s

Time (t) = 8 s

Final velocity (v) = 0 m/s

Distance (s) =.?

Next, we shall determine the initial velocity (u) of the car. This can be obtained as follow:

Acceleration (a) = –20 m/s/s

Time (t) = 8 s

Final velocity (v) = 0 m/s

Initial velocity (u)

a = (v – u) / t

–20 = (0 – u) / 8

–20 = – u / 8

Cross multiply

–20 × 8 = – u

– 160 = – u

Divide both side by – 1

u = – 160 / – 1

u = 160 m/s

Finally, we shall determine the distance travelled by the car before stopping as follow:

Time (t) = 8 s

Final velocity (v) = 0 m/s

Initial velocity (u) = 160 m/s

Distance (s) =.?

s = (v + u)t /2

s = (0 + 160) × 8 /2

s = (160 × 8) /2

s = 1280 / 2

s = 640 m

Therefore, the car travelled 640 m before stopping.

Answer:

False

Explanation:

I took the test  and true was incorrect so the answer is false

hope this helps

Answer:

False

Explanation:

False. A high gear ratio = less speed = more force

Answer:

The answer is cool.

Explanation:

If you look at the diagram then you can see that the star being pointed to is orange-ish. Red and orange stars are the more cooler ones.

Cool is the characteristic that describes the stars indicated by the arrow in the image. Therefore, the correct option is option A.

A star is an extremely bright ball of primarily hydrogen and helium-based gas that is kept together through its own gravity. The star is supported against gravity by nuclear fusion events at its core, which also yield photons, heat, and trace quantities of heavier elements.

The star is created when hydrogen nuclei start to fuse into helium nuclei at a temperature of roughly 10 million K (18 million °F) in the gas. The expanding star's core emits energy through nuclear fusion, which eventually slows the gas cloud's collapse. Cool is the characteristic that describes the stars indicated by the arrow in the image.

Therefore, the correct option is option A.

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Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 250 g

volume = 100 cm³

So we have

[tex]density = \frac{250}{100} = \frac{5}{2} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

4*10^-2

Explanation:

for the scientific notation the first number must be between 1 and 10, so in this case it is 4. 4/100 is also equal to 0.04, and if we could the number of places before 4, there are two, therefore 4 times 10 to the power of -2

It took a squirrel 0.50 s to run 5.0 m leftward when it reached the tree while maintaining a constant acceleration. The squirrel was running 15 m/s leftward when it reached the tree.

What was the squirrel's initial velocity?

Answer: -5

The initial velocity of the squirrel is 5m/s. Initial velocity is a vector quantity.

Acceleration is the rate of change of the velocity of an object with respect to the time. Acceleration is the vector quantity.

The initial velocity of the object can be calculated by the following equation:

s = 1/2 (u + v) t

5.0 = 1/2 (u + 15) × 0.50

10 = (u + 15) × 0.50

10 / 0.50 = (u + 15)

20 = (u + 15)

u = 20 - 15

u = 5m/s

Thus, the squirrel's initial velocity before getting startled is 5 meters per second.

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Answer:

r =  255.68 m

Explanation:

When a body moves in a circular path, an acceleration, due to constant change in its direction, is developed, known as centripetal acceleration. The centripetal acceleration acts towards the center of the circular path. The formula to calculate the centripetal acceleration is given as follows:

ac = v²/r

where,

ac = centripetal acceleration = 22 m/s²

v = tangential speed = 75 m/s

r = radius of curve = ?

Therefore,

22 m/s² = (75 m/s)²/r

r = (75 m/s)²/(22 m/s²)

r =  255.68 m

Answerspeed = 0.0333333 meters per second

= 0.0333333 m/s

Explanation:

i'm not 100% sure but i think that's the answer

iekeiieurk384k3irkrurj484jr

Answer:

The doctors could see if her cells are getting the molecules they need from food and air

Explanation:

The doctors could see if her cells are getting the molecules they need from food and air. Doing so allows the doctors a general overview of how well her body's biological systems are performing since the basic necessities of the human system are food and oxygen. Therefore if the body is receiving both food and oxygen properly and distributing it properly and efficiently as well without any problems then the most likely outcome is that she is healthy enough to perform her tasks in the submarine under more pressure.

Answer:

The doctors could see if her cells are getting the molecules they need from food and air

Explanation:

Answer:

I think it is true I'm not saying it is but if you get another person who says its true say true

Explanation:

Answer:

I think the answer is C

Explanation:

EDGE 2020

Computer-enhanced x-rays is called as  Computed Tomography (CT) scans. Hence option C is Correct.

Computed tomography scan is a medical imaging technique used to get images of our body  which is under study.  Radiographers or radiology technologists are skilled to handle this machine. It is also know as  computed axial tomography scan  (CAT scan). it is used to get internal images of the body. It uses rotating X-ray tube and a detector.

CT scans are more detailed than standard X-rays. In standard X-rays, a beam of X-ray is triggered at the body, the beam passes through the body and it gets imposed on the photographic plate which is behind the body. Variation in intensity on the photographic film shows the internal structure of the body. it can not give information about internal organs and other structures.

CT scan combines  X-ray images taken at different angles around your body and uses computer for processing to create images (slices) of the bones, and blood vessels. CT scan images gives more-detailed information than X-ray.

Hence option C is correct.

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Answer:

what is the number

Explanation: