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Paraphin [41]
3 years ago
12

A 3-kg mass is in free fall. What is the velocity of the mass after 7 seconds??

Physics
1 answer:
dmitriy555 [2]3 years ago
6 0
69 ms. I hope that helps
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A 26-kg chandelier hangs from a ceiling on a vertical 4.0-m-long wire. what horizontal force would be necessary to displace its
-Dominant- [34]
First of all you have that the force that is in cable in its vertical posibion is:
 Fy = m * g
 Fy = (26) * (9.8) = 254.8 N
 Then, the force in horizontal direction will be:
 Tan (x) = Fy / Fx
 Clearing:
 Fx = Fy / tan (x)
 Substituting values:
 Fx = (254.8) / (0.17 / 4)
 Fx = 5995.29 N
 Answer:
 The horizontal force that would be necessary to displace its position 0.17 m to one side is 5995.29 N
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3 years ago
To what extent do drugs benefit society (legal and illegal drugs - can include medication)
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3 years ago
calcula el potencial electrico de un punto B que se encuentra a 75cm de una varga positica q=9×10-6c​
ankoles [38]

Answer:

V = 72000 volts

Explanation:

calculates the electric potential of a point B that is 75cm from a positive charge q = 9 × 10-6c

Given that,

Electric charge, q=9\times 10^{-6}\ C

We need to find the electric potential of a point B that is 75 cm from this charge. The formula for the electric potential is given by :

V=\dfrac{kq}{r}\\\\V=\dfrac{9\times 10^9\times 6\times 10^{-6}}{0.75}\\\\V=72000\ V

So, the electric potential is equal to 72000 Volts.

3 0
3 years ago
Choose the correct statement regarding energy production in the interior of a star and energy production in a power plant.
sergey [27]

' C ' is the only correct statement here.

8 0
3 years ago
In 1869, Dmitri Mendeleev was trying to arrange the 65 known elements in a logical way. He arrived at the solution when he saw t
finlep [7]

Answer:

Creative thinking

Explanation:

As you can see in the question above, when Mandleev needed to organize the chemical elements in a logical, organized and efficient way, he thought until he came to the conclusion of organizing them according to the atomic weight of each one. This is a clear example of creative thinking, which is the term that refers to the act of solving a problem based on thought and reasoning.

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3 years ago
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