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3 years ago

12

Atomic size decreases across a period due to an increase in the effective nuclear charge. true or false

1 answer:

alexgriva [62]3 years ago

3 0

Answer: True

Explanation:

Along a period from left to right the atomic size decreases because all the electrons are subsequently added to the same shell, also the equal no. of protons are added to the nucleus leading to the increase in the net effective nuclear charge at the constant distance. This leads to the increase in the force of attraction between the (opposite) charged particles which shrinks the atomic size.

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What do MRI and ultrasound have in common as diagnostic imaging techniques? Check all that apply.

Gennadij [26K]

Answer:

low risk for tissue damage

uses radio waves

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an object of mass 8 kg is whriled round in a vertical circle of radius 2m with a constant speed of 6m/s .Then the maximum and mi

algol13

Answer:

Maximum Tension=224N

Minimum tension= 64N

Explanation:

Given

mass =8 kg

constant speed = 6m/s .

g=10m/s^2

Maximum Tension= [(mv^2/ r) + (mg)]

Minimum tension= [(mv^2/ r) - (mg)]

Then substitute the values,

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3 years ago

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Butoxors [25]

Answer:

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Explanation:

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2 years ago

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WINSTONCH [101]

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4 years ago

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Onur drops a basketball from a height of 10m on Mars, where the acceleration due to gravity has a magnitude of 3.7m/s2. We want

lbvjy [14]

Explanation:

It is given that, Onur drops a basketball from a height of 10 m on Mars, where the acceleration due to gravity has a magnitude of 3.7 m/s².

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Here, the ball is droped under the action of gravity. The value of acceleration due to gravity on Mars is positive.

We want to know how many seconds the basketball is in the air before it hits the ground. So, the formula is :

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3 years ago