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White raven [17]
3 years ago
12

A student has a block that has a volume of 150 cm3 and a density of 30 g/cm3

Physics
1 answer:
dlinn [17]3 years ago
3 0

Answer:

mass of block = 4500g

Explanation:

density = mass/volume

mass = volume x density

         = 150 x 30

         = 4500 g

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As the length increases, resistance increases, as a result current decreases.
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4 years ago
It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box?
PIT_PIT [208]

Answer:

Ans is 200 J

Explanation:

Given:  Force = 20N

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3 0
4 years ago
A block with mass m 2.00 kg is placed against a spring on a frictionless incline with angle 30 degrees (Fig. B-43). (The block i
guajiro [1.7K]

Answer:

Explanation:

a )

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= 1 / 2 k X²

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b ) The stored potential energy will be converted into gravitational potential energy of the block earth system when the block will ascend along the incline . So change in the gravitational potential energy will be same as stored elastic potential energy of the spring that is .392 J .

c ) Let h be the distance along the incline which the block ascends.

vertical height attained ( H ) =h sin30

= .5 h

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4 cm .

=

7 0
3 years ago
According to the Periodic Table of Elements, Calcium (Ca) has:
RSB [31]

Answer:

A- 20 protons and 20 electrons

Explanation:

8 0
3 years ago
What is the speed of a walking person in m/s if the person travels 1000 m in 1200 seconds?​
Brilliant_brown [7]

Answer:

0.83

Explanation:

to figure out what m/s is you would divide the distance by time.

1000 divided by 1200 is equal to .83  so

.83 m/s as your final answer

4 0
3 years ago
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