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photoshop1234 [79]
4 years ago
11

At the bottom of the ocean, a rock has a mass 25 g. At sea level, the same rock will have a mass of: less than 25 g, more than 2

5 g, or the same as 25 g?
Physics
2 answers:
storchak [24]4 years ago
5 0
It will be same 25 g
ivann1987 [24]4 years ago
5 0

Answer:

Option (2)

Explanation:

The weight of an object is always more at the sea level than at the base of the ocean floor. The water always forces an upward thrust to an object, as a result of which the weight of the object gets reduced by a certain amount. This property of water generating an upward force is known as the the buoyancy.

Thus, if an object weighs 25 grams at the ocean floor, then at the mean sea level, the weight is slightly more than 25 grams.

Hence, the correct answer is option (2).

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Which of the following happens to an object in uniform circular motion?
podryga [215]

Answer:

As an object moves in a circle, it is constantly changing its direction. ... Accelerating objects are objects which are changing their velocity - either the speed (i.e., magnitude of the velocity vector) or the direction. An object undergoing uniform circular motion is moving with a constant speed.

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4 years ago
Free point cuz i cewl like dat‍♀️‍♂️
DedPeter [7]
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8 0
3 years ago
Read 2 more answers
A car turns a certain curve of radius 24.98 m with constant linear speed of
Anastaziya [24]

Answer:

3525.19 kg

Explanation:

The computation of the mass of the car is shown below:

As we know that

Fc = m × V^2 ÷ R

m = Fc × R ÷ V^2

Provided that:

Fc = 34.652 kN = 34652 N

R = Radius = 24.98 m

V = speed = 15.67 m/s

So,

m = 34652 × 24.98 ÷ 15.67^2

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7 0
3 years ago
A roller of radius 12.5 cm turns at 14 revolutions per second. What is the linear velocity of the roller in meters per second?
Firdavs [7]

12.5 times 14 and convert to meters its 1.75 meters per second

7 0
3 years ago
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Two cars are initially separated by 2500 m and traveling towards each other. One car travels at 4.5 m/s and the second car trave
mylen [45]

Answer:

714.285s

Explanation:

use relative velocity

8-4.5 = 3.5m/s

x = 2500m

2500/3.5 = 714.285s = 700s (with sig figs)

7 0
3 years ago
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