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Diano4ka-milaya [45]
4 years ago
8

.A force is used to lift a 75-kg mass to a height in 2 sec. It does 9800 J of worl

Physics
1 answer:
Nataly_w [17]4 years ago
4 0

Answer:

It is raised to the height of 13.1 meters.

Explanation:

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A 120-kg object and a 420-kg object are separated by 3.00 m At what position (other than an infinitely remote one) can the 51.0-
djverab [1.8K]

Answer:

1.045 m from 120 kg

Explanation:

m1 = 120 kg

m2 = 420 kg

m = 51 kg

d = 3 m

Let m is placed at a distance y from 120 kg so that the net force on 51 kg is zero.

By use of the gravitational force

Force on m due to m1 is equal to the force on m due to m2.

\frac{Gm_{1}m}{y^{2}}=\frac{Gm_{2}m}{\left ( d-y \right )^{2}}

\frac{m_{1}}{y^{2}}=\frac{m_{2}}{\left ( d-y \right )^{2}}

\frac{3-y}{y}=\sqrt{\frac{7}{2}}

3 - y = 1.87 y

3 = 2.87 y

y = 1.045 m

Thus, the net force on 51 kg is zero if it is placed at a distance of 1.045 m from 120 kg.

6 0
4 years ago
Which of the following parts of a nuclear power plant is turned by steam? Select one: a. control rods b. reactor vessel c. turbi
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A nuclear power plant is defined as a thermal power station where electricity is generated by the help of sustainable nuclear fission.

A nuclear power plant needs nuclear reactor as the thermal energy generator .The reactor has various parts where fissionable radioactive material will undergo nuclear fission .Through this process high amount of thermal energy is released which is allowed to water to generate steam.

The steam produced in the reactor drives the turbine which is connected to the generator.Due to the electromagnetic induction the generator will produce electricity.

The control rods present in the nuclear reactor will control the rate of fission by absorbing the thermal neutrons.

Hence the correct answer of the question is C i.e Turbine.

8 0
3 years ago
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endorphins

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What would the charge of an atom be if it has six protons and six electrons
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<span>Carbon atom showing 6 protons as electro positive charge in its nuclei should have same no of -ve charged electrons , that is 6 electronns in its radii to make an atom of C as a neutral element , for that each element in its atomic state should have equal no of protons and electrons , the no of neutrons which has no electric charge and almost negligible weight does play significant role except contributes to isotopes of the given atom or an element, so C atom having 6 protons should have 6 electrons</span>
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4 years ago
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(c)
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The answer is c. Twelve wants pass an obsessive frequency of the internet
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