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4 years ago

What is the intermingling of one substance within another

Physics

1 answer:

Dmitrij [34]4 years ago

5 0

The intermingling of substances through the natural movement of particles is known as diffusion :P

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When a researcher wants to correlate tension with depression, she develops tests that measure these two emotional states. The te

Igoryamba

Answer:

The answer is: measuring instrument

Explanation:

The researcher develops test to measure the variables she is interested in. So, they are her measuring instrument.

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3 years ago

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If the velocity of a pitched ball has a magnitude of 44.5 m/sm/s and the batted ball's velocity is 55.5 m/sm/s in the opposite d

Yuliya22 [10]

Incomplete question as the mass of baseball is missing.I have assume 0.2kg mass of baseball.So complete question is:

A baseball has mass 0.2 kg.If the velocity of a pitched ball has a magnitude of 44.5 m/sm/s and the batted ball's velocity is 55.5 m/sm/s in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

Answer:

ΔP=20 kg.m/s

Explanation:

Given data

Mass m=0.2 kg

Initial speed Vi=-44.5m/s

Final speed Vf=55.5 m/s

Required

Change in momentum ΔP

Solution

First we take the batted balls velocity as the final velocity and its direction is the positive direction and we take the pitched balls velocity as the initial velocity and so its direction will be negative direction.So we have:

$v_{i}=-44.5m/s\\v_{f}=55.5m/s$

Now we need to find the initial momentum

$P_{1}=m*v_{i}$

Substitute the given values

$P_{1}=(0.2kg)(-44.5m/s)\\P_{1}=-8.9kg.m/s$

Now for final momentum

$P_{2}=mv_{f}\\P_{2}=(0.2kg)(55.5m/s)\\P_{2}=11.1kg.m/s$

So the change in momentum is given as:

ΔP=P₂-P₁

$=[(11.1kg.m/s)-(-8.9kg.m/s)]\\=20kg.m/s$

ΔP=20 kg.m/s

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4 years ago

Write any two physical hazard occuring in the late choldhood

Charra [1.4K]

Answer:

Hazards during late childhood

Health Problems: Chronic health ailments like T.B., Pneumonia etc will hinder the child's motor abilities.
Accidents: School age children are more adventurous in nature, they run fast, play hard, ride bicycles and scooters and engage in a variety of sports.

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3 years ago

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When two identical resistors are connected in series across ideal battery, total power dissipated by them is P. Now both are con

Art [367]

Answer:

4 P

Explanation:

V = IR

when they are in series R = 2 r

when they are in parallel R = 1/2 r

so current will increase by a factor of 4 when they are in parallel

and power used will also increase by a factor of 4 to 4 P

Power = IV when I now becomes 4 I power becomes 4 P

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2 years ago

State two other ways in which evaporation is different from boiling

Nookie1986 [14]

Answer:

To summarize, evaporation is slower, occurs only from the surface of the liquid, does not produce bubbles, and leads to cooling. Boiling is faster, can occur throughout the liquid, produces lots of bubbles, and does not result in cooling.

Explanation:

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3 years ago

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