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spin [16.1K]
2 years ago
9

A 30 kg child is in an elevator accelerating down at a rate of -5 m/s2.

Physics
1 answer:
Annette [7]2 years ago
6 0

Answer:

The force is - 150 N

Explanation:

F = 30 • - 5 = - 150

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Describe three electrical appliances that use circuits to convert electrical energy into other forms of energy.
marishachu [46]
We see that around us there are many things that makes use of circuits to make our lives easier Circuits are used to convert electrical energy to other forms of energy. For instance, a heater contains circuits which converts the electrical energy into heat. A circuit in a fan converts the electrical energy into motion. In a doorbell, the circuits are used to convert electrical energy into sound.<span />
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3 years ago
Large numbers of ribosomes are present in cells that specialize in producing which molecules?
Fed [463]

Answer:

Protein molecules

Explanation:

Ribosomes are the cell organelles that are responsible for the synthesis of protein in the cell. Proteins are the fundamental building blocks and help in repair and damage of cell in the body.

Ribosome is a complex which is made up of protein and RNA. Ribosomes can be found floating within the cytoplasm or attached to the endoplasmic reticulum.

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Select all of the following that describes momentum, p [mark all correct answers]
Inga [223]

Answer:

c. Momentum is the product of mass and velocity

e. Momentum is a vector quantity

g. Momentum has unit of kgm/s

Explanation:

Linear momentum P

P = m .v

m =mass

v=Velocity

If mass take in kg and velocity is in m/s then momentum p will be in kg.m/s.

1. momentum is the product of velocity and mass.

2.Momentum is a vector quantity.

3.Momentum have kg.m/s unit.

So the following option are correct.

c. Momentum is the product of mass and velocity

e. Momentum is a vector quantity

g. Momentum has unit of kgm/s.

Note-

1.Joule is the unit of energy.

2.One-half the product of mass and the square of the object's speed is known as kinetic energy.

7 0
3 years ago
What is the difference between a lunar eclipse and a solar eclipse?
Leokris [45]

Answer:

A lunar eclipse occurs when Earth blocks the light going to the moon. A solar eclipse occurs when the moon blocks the light coming from the sun.

Explanation:

8 0
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A teacher wants to demonstrate that the radioactive source emits alpha beta and gamma radiation. Describe a method the teacher c
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By using an electric field, it is feasible to differentiate between these different forms of radiation.

<h3>What is a radioactive source?</h3>

A source that emits radiation like gamma, beta, and alpha rays is said to be radioactive. Using an electric field, we can discriminate between these different forms of radiation.

The field does not deflate the gamma rays, but it does deflate the alpha and beta rays, with the alpha being deflated to the field's negative portion and the beta to its positive part.

Hence, by using an electric field, it is feasible to differentiate between these different forms of radiation.

To learn more about the radioactive source refer;

brainly.com/question/12741761

#SPJ1

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