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4 years ago

Which of the following explains why doctors practice antiseptic medicine?

Physics

1 answer:

WARRIOR [948]4 years ago

4 0

Answer:

D.) to prevent doctors from introducing microbes that could infect the patient

Explanation:

An antiseptic is a substance that stops or slows down the growth of microorganisms. They're frequently used in hospitals and other medical settings to reduce the risk of infection during surgery and other procedures.

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A 1.5 kilogram cart initially moves at 2.0 meters per second. It is brought to rest by a constant net forcé in 3.0 second. What

lubasha [3.4K]

The net force on the cart is

   Force = (mass) x (acceleration) .

We know the mass = 1.5 kilogram, but we need to
calculate the acceleration.

   Acceleration = (change in speed) / (time for the change)

Change in speed = (ending speed) minus (beginning speed)

   = ( 0 ) - ( 2 m/s ) =   -2 m/s

Acceleration = (change in speed) / (time for the change)

   = ( -2 m/s ) / (3 sec)

   = - 2/3 m/s² .

Finally ...    Net force = (mass) x (acceleration)

   = (1.5 kilogram) x ( - 2/3 m/s²)

   = ( - 3/2 x 2/3 ) (kg-m/s²)

   = - 1 newton .

The negative sign on the force means the force is applied
opposite to the direction the cart is moving. That gives
negative acceleration (slowing down), and the cart
eventually stops.

3 0

4 years ago

If the momentum of a 1000 kg car travelling at 10 m/s was transferred completely to a 20.0 kg traffic barrier, what would the fi

denis-greek [22]

Answer:

d. 500 m/s

Explanation:

Momentum: This is the product of the mass of a body to its velocity, The S.I unit of momentum is kgm/s.

Mathematically, momentum can be expressed as,

M = mv....................... equation 1

Where M = momentum, m = mass, v = velocity

deduced from the question,

Momentum of the car = momentum of the barrier.

MV = mv ............................. Equation 1

Where M = mass of the car, V = velocity of the car, m = mass of the barrier, v = velocity of the barrier.

making v the subject of the equation,

v = MV/m........................ Equation 2

Given: M = 1000 kg, V = 10 m/s, m = 20 kg.

Substitute into equation 2

v = 1000(10)/20

v = 500 m/s.

Hence the speed of the barrier = 500 m/s

The right option is d. 500 m/s

8 0

4 years ago

Can someone help me PLEASE I will mark Brainly and 10+ points

yanalaym [24]

#10 when you added the oil to the water they did not mix together. Instead the oil created a layer on the surface of the water. This is because oil is less dense than water and so it floats

5 0

3 years ago

Read 2 more answers

HELP!!!!!!!!!

WARRIOR [948]

I think it would be A
hope this helps.
A and C

5 0

3 years ago

Why is digital forensics important?

netineya [11]

Hi! digital forensics is important because not only does digital forensics allow cyber security organisations to develop technologies that can prevent hackers from accessing devices, websites and networks but can lead businesses in the direction of understanding exactly what data is compromised.

4 0

2 years ago