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creativ13 [48]
3 years ago
7

In a nuclear power plant, nuclear reactions are used to heat steam, which turns a turbine. What energy conversion is happening i

n a nuclear power plant?
A.Heat energy to nuclear energy to electrical energy to kinetic energy
B.Nuclear energy to heat energy to kinetic energy to electrical energy
C.Electrical energy to chemical energy to kinetic energy to heat energy
D.Chemical energy to heat energy to kinetic energy to nuclear energy
Physics
2 answers:
mr_godi [17]3 years ago
8 0
In a nuclear power plant, you start off with uranium (nuclear energy), and a lot of that nuclear energy is released by heat energy. Heat then boils water and drives a turbine for a generator, which creates kinetic energy, which produces electrical energy.

In other words, your answer is B.
Lina20 [59]3 years ago
5 0

Answer:

In a nuclear plant is happening the B option. Nuclear energy to heat energy to kinetic energy to electrical energy

Explanation:

1. The first step in a nuclear plant is to generate a nuclear chain reaction, removing nuclear elements from the atoms of enriched substances like uranium 235. This reaction free energy in the form of heat. A lot. NUCLEAR ENERGY

2. The heat should now be dissipated, through a cooling system, that uses water. HEAT ENERGY

3. The water in the cooling system boils and generates steam. The steam moves the turbine. KINETIC ENERGY

4. The turbine rotation generates electrical energy. ELECTRICAL ENERGY

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The Doppler effect is an effect produced by a moving source of sound or electromagnetic waves due to the relative motion of a so
IrinaK [193]

Answer:

Apparent frequency increases for Bob and decreases for Jill.

Explanation:

Doppler effect refers to the apparent change in frequency when there is relative motion between source and the listener. When the source and listener move closer, the apparent frequency heard by the listener increases. And when the source and listener move away from each other, the apparent frequency heard by the listener decreases.

Thus, when the emergency vehicle approaches Bob, the apparent frequency of the siren increases. It moves away from Jill, the apparent frequency  heard by the Jill decreases.

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4 years ago
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All of the following are examples of ways to improve energy efficiency of heating systems, except _______.
Yuri [45]

Answer:

D. Opening the front door in winter to filter and clean warm ai

Explanation:

All of the following are examples of ways to improve energy efficiency of heating systems, except _______.

A. Closing off rooms that aren’t in use.

B. Frequently cleaning the furnace filter.

C. Fixing cracks in the walls and floor.

D. Opening the front door in winter to filter and clean warm air

for an heating systems it is better to keep the front door shut so that all the heat energy does not escape outside.

when heat energy is within a closed system ,it can still be utilized to keep the inhabitants warm otherwise there will be an exchange with the cold from winter fall outside the air, and the heating system's efficiency will be reduced

5 0
3 years ago
A rocket takes off from Earth's surface, accelerating straight up at 47.2 m/s2. Calculate the normal force (in N) acting on an a
lions [1.4K]

Answer:

Approximately 4.61\times 10^{3}\; {\rm N} upwards (assuming that g = 9.81\; {\rm m\cdot s^{-2}}.)

Explanation:

External forces on this astronaut:

  • Weight (gravitational attraction) from the earth (downwards,) and
  • Normal force from the floor (upwards.)

Let (\text{normal force}) denote the magnitude of the normal force on this astronaut from the floor. Since the direction of the normal force is opposite to the direction of the gravitational attraction, the magnitude of the net force on this astronaut would be:

\begin{aligned}(\text{net force}) &= (\text{normal force}) - (\text{weight})\end{aligned}.

Let m denote the mass of this astronaut. The magnitude of the gravitational attraction on this astronaut would be (\text{weight}) = m\, g.

Let a denote the acceleration of this astronaut. The magnitude of the net force on this astronaut would be (\text{net force}) = m\, a.

Rearrange \begin{aligned}(\text{net force}) &= (\text{normal force}) - (\text{weight})\end{aligned} to obtain an expression for the magnitude of the normal force on this astronaut:

\begin{aligned}(\text{normal force}) &= (\text{net force}) + (\text{weight}) \\ &= m\, a + m\, g \\ &= m\, (a + g) \\ &= 80.9\; {\rm kg} \times (47.2\; {\rm m\cdot s^{-2}} + 9.81\; {\rm m\cdot s^{-2}}) \\ &\approx 4.61 \times 10^{3}\; {\rm N}\end{aligned}.

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2 years ago
What are the first and second object in a gravitational field
vodka [1.7K]

downward force then reaction if you mean what forces

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3 years ago
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