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3 years ago

During the flight of the ball, what is the direction of its Acceleration due to gravity

1 answer:

4 0

Regardless of what direction an object is moving, the acceleration
due to gravity is always directed toward the center of the Earth.
That's the direction commonly known as "down".

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In science, a hypothesis must be true.

Anon25 [30]

I would believe that this is false.

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3 years ago

Seattle, Washington and Bismarck, North Dakota experience very different temperatures even though they are at the same latitude.

Likurg_2 [28]

Answer:

BELOW

Explanation:

Seattle (near water) would have hotter temperatures because it is by a large body of water. Unlike Bismarck which is surrounded by land. Bismarck would get hotter. Seattle would be affected the large body of water which heats more slowly than the continent warming.

8 0

2 years ago

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Cathy is moving into a tenth-floor apartment. She has a grand piano that weighs 570 pounds and is too big to fit in the elevator

Kazeer [188]

She will need pulleys. Nothing else will work

4 0

3 years ago

How do u work out weight c and d and what r the answers

Ket [755]

The whole secret of things that are balanced on a pivot like this is:

The sum of all of the 'moments' is equal on both sides.

The moment of each weight is (the weight) times (its distance from the pivot).
If you add up those for each eight on one side, it has to be equal to the sum
of all the ones on the other side.

2. a).
The moments on the right side are: (4 x 0.15) and (1 x 0.40).
They add up to (0.60 + 0.40) = 1.00

The only moment on the left side is (C x 0.25). Both sides have to be equal.

C x 0.25 = 1.00

Divide each side by 0.25, and you have C = 4 N .

===========================================

2. b).
The only moment on the left side is (5 x 0.40) = 2.00

The moments on the right side are (1 x 0.20) and (D x 0.30)
They add up to (0.3D + 0.2).

Both sides have to be equal. 0.3D + 0.2 = 2.0

Subtract 0.2 from each side: 0.3D = 1.8

Divide each side by 0.3: D = 6 N

6 0

3 years ago

Use what you know about mass and how you use it to calculate force in the following situation. If each washer has a mass of 4. 9

mina [271]

Considering the change of units and the definition of weight, the mass of two washers would be 0.0098 kg and if 4 washers are attached to the string, then the applied force on the car will be 0.196 N.

Mass of two washers

If each washer has a mass of 4.9 g, then the mass of two washers will be calculated simply by multiplying the mass of 1 washer by the amount you have of them, in this case 2:

4.9 g×2= 9.8 g

Being 1 kg = 1000 g, you apply the following rule of three to make the change of units: if 1000 g equals 1 kg, 9.8 g equals how many kilograms?

$mass=\frac{9.8 gramsx1 kg}{1000g}$

Solving:

mass= 0.0098 kg

Finally, the mass of two washers would be 0.0098 kg.

Applied force

On the other side, mass is the amount of matter that a body contains and weight is the action exerted by the force of gravity on the body.

The mass of an object will always be the same, no matter where it is located. Instead, the weight of the object will vary according to the force of gravity acting on it.

Weight is calculated as the product of the object's mass and the value of the gravitational acceleration:

W= m×g

In this case, you know:

m= 4.9 g×4= 19.6 g= 0.0196 kg → the mass of 4 washers in kilograms
g= 10 m/s²

Replacing:

W= 0.0196 kg× 10 m/s²

Solving:

W= 0.196 N

Finally, if 4 washers are attached to the string, then the applied force on the car will be 0.196 N.

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7 0

2 years ago

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