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Akimi4 [234]
3 years ago
12

I need help this is due today GIVING BRAINLIEST IM DESPERATE!

Physics
1 answer:
Nitella [24]3 years ago
3 0

Answer:

1: is A

2: is C

Explanation:

1: because all other option would imply that the truck was not moved from from its previous position due to the lack of work / force exerted by the car

2: this is because the less dense ball will have less opposing force action on it causing it to move / accelerate / go at a faster speed

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True or False: The height from which cliff divers jump affects the velocity at which they will fall. Velocity is speed in a cert
Juli2301 [7.4K]

Answer:

the diver's speed is independent of the launch height.

Explanation:

For this exercise we must use Newton's second law

              fr - W = m a

the friction force has the general form

              fr = b v

Let's analyze this equation to find out what happens with the speed of the distant club.

When jumping, the initial speed is zero, so the friction force is zero and has an acceleration equal to the acceleration of gravity, as the speed increases the friction force increases decreasing the acceleration until it becomes zero, when it arrives at this value the velocity it has is called terminal velocity and this velocity remains fixed in relation to the trajectory.

             fr = W

             v = cte

The distance or time in which this equilibrium is reached is relatively fast, so the diver's speed is independent of the launch height.

8 0
3 years ago
How much space does 1kg of air occupy? <br><br> The density of the air is 0.0013g/mL
nexus9112 [7]
The basic relationship between mass m, volume V and density d is given by
d= \frac{m}{V}
re-arranging the equations and using m=1 kg and d=0.0013 g/mL = 0.0013 kg/L, we find the volume:
V= \frac{m}{d}= \frac{1 kg}{0.0013 kg/L}=769.2 L
and since 1 L = 1 m^3, this corresponds to 769.2 m^3 of air.
3 0
3 years ago
An extremely fast-moving charged particle traveling in a magnetic field can radiate X-rays, a phenomenon known as synchrotron ra
Mariana [72]

Answer:

The magnetic field will help to create an electromagnetic radiation which will prevent the charged particle from moving in a constant direction in a straight path.

Explanation: A magnetic field is an area around a particle where magnetic energy is felt or experienced, this ensures that all the charged particle within the magnetic field will be influenced by magnet.

In the highlighted situation, the magnetic field will help to ensure that an electromagnetic radiation is created to synchrotron radiation occurs effectively.

3 0
2 years ago
"Consider the Earth and the Moon as a two-particle system. (a) How far from the center of the Earth is the gravitational field o
olga55 [171]

a is the correct

Explanation:

hope you like then comment

3 0
3 years ago
What is the unit of a force, and what is 1 unit equivalent to?
Verizon [17]

Answer:

Newton

Explanation:

The unit of force is Newton and it is given after Sir Isaac Newton for his tremendous works in this regard.

 Force is the product of mass and acceleration of a body.

    Force  = mass x acceleration  

 The unit of mass = kg

                    acceleration  = m/s²

So;

      1N  = 1kgm/s²

Therefore, the unit of force is newtons and 1N is equal to  1kgm/s²

6 0
3 years ago
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