Explain why the gravitational acceleration of any object near earth is the same matter what was the mass of the object

Answers

Answer 1

Answer: It takes greater force to accelerate an object that has more mass. But the gravitational force between the Earth and an object is greater when the object hass more mass. It works out just right to make any object with any mass accelerate at the same rate.

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Starting from rest, Christina experiences 24.5 m/s2 of acceleration to take off from an aircraft carrier for 5 seconds. How long does the runway need to be? Round to the nearest meter.

Answers

Answer:

The length of the runway to the nearest meter is 306 m.

Explanation:

Given:

Initial velocity of Christina is, $u=0\ m/s(Rest)$

Time taken is, $t=5\ s$

Acceleration experienced by Christina is, $a=24.5\ m/s^2$

The length of the runway is, $d=?$

Now, we use Newton's equation of motion that relates the distance, initial velocity, time and acceleration.

So, we have the following equation of motion:

$d=ut+(1)/(2)at^2$

Plug in all the given values and solve for 'd'. This gives,

$d=0+(1)/(2)* 24.5* 5^2\n\nd=(1* 24.5* 25)/(2)\n\nd=(612.5)/(2)\n\nd=306.25\approx 306\ m(\textrm{Rounding to nearest meter})$

Therefore, the length of the runway to the nearest meter is 306 m.

5. A kettle has a power of 1200 W (Hint: 1200 W = 1200 J/S). If the kettletakes 2.5 minutes to boil water, how much energy had been transferred?

Answers

Answer:

180,000 Joules

Explanation:

Hint: 1200 W = 1200 J/S

The kettle takes 2.5 minutes to boil water.

1 minute = 60 seconds

2.5 minutes = ?

Cross multiplying gives; 150 seconds

The energy transferred to boil the water in 150 seconds = 1200 J/S × 150 S = 180,000 J

What kind of levers are your arms and legs

Answers

Answer:

Legs are the 2nd class lever.

Arms are the 3rd class lever.

Explanation:

A lever is an inflexible body fit for turning on a point on itself. There are three types of lever

1) 1st class lever: (pivot is in the center of load and effort)

In the human body are uncommon. One model is the joint between the head and the principal vertebra

2) 2nd class lever: (load is in the center of pivot and effort)

In the human body, the 2nd class lever is found in the lower leg when somebody remains on tiptoes.

3) 3rd class lever: (The load is far from the pivot than the effort.)

In the human body; one model can be delineated in the elbow joint

Every atom of the ____ carbon has 6 protons.

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Hi, the answer for this question is element!

Hope this helped!

Plz mark brainliest!

~Nate

Help me ASAP (this is science ;-;)

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Go on .........I don’t see a question

There is no question on here

Why is it important that the mouth and stomach are near the start of the digestive system? thx

Answers

Answer: To complete the process of digestion after the food is ingested by mouth.

Explanation:

The food that we eat is ingested by mouth and here the mechanical degradation of food takes place. This breaks down the food into smaller pieces.

Mouth also contains the enzyme that is responsible for the digestion of starch.

Then the food from the mouth reaches the stomach where various types of digestive juices and enzymes are secreted to digested the food.

Hence, mouth and stomach must be near in the digestive system.

Because the mouth breaks down the food and the stomach uses acid to break food down even more

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