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3 years ago

1. Which elements would likely have similar properties: two elements in the same group, or two elements in the same period?

Physics

2 answers:

Sergeeva-Olga [200]3 years ago

7 0

Answer:

3. Cs, they are in the same group, mainly sharing characteristics.

Explanation:

nadya68 [22]3 years ago

4 0

Answer:

Left side and center of the periodic table: metals

Right side of the periodic table: Nonmetals

Zigzag line toward right side of the periodic table: Metalloids

Explanation:

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A uniform disk with a mass of 5.0 kg and diameter 30 cm rotates on a frictionless fixed axis through its center and perpendicula

Marina86 [1]

Answer: $\alpha =10.66 rad/s^2$

Explanation:

Given

mass of disk $m=5 kg$

diameter of disc $d=30 cm$

Force applied $F=4 N$

Now this force will Produce a torque of magnitude

$T=F\cdot r$

$T=4\dot 0.15$

$T=0.6 N-m$

And Torque is given Product of moment of inertia and angular acceleration $(\alpha )$

$T=I\cdot \alpha$

Moment of inertia for Disc $I= \frac{Mr^2}{2}$

$I=0.05625 kg-m^2$

$0.6=0.05625\cdot \alpha$

$\alpha =10.66 rad/s^2$

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3 years ago

Seismic waves carry energy from earthquakes through the earth's crust. Seismic waves are...

Crank

Answer:

- longitudinal waves only

Explanation:

The P seismic waves travel as elastic motions at the highest speeds. They are longitudinal waves that can be transmitted by both solid and liquid materials in the Earth's interior.

3 0

3 years ago

Which best explains how thermal energy is transferred when someone holds a hand above a fire?

Artyom0805 [142]

Heat rises therefore the heat from the fire rises up to your hand... i didnt have any answer choices to work with sorry

5 0

3 years ago

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Please help

natali 33 [55]

Answer:

Thermosphere

temperature continue to rise up to 1500*C

Ionosphere

Mesosphere

temperature falls to -93*C

Stratosphere

protective ozone layer

UV radiation causes temperature to rise

Troposphere

78% nitrogen, 21% oxygen

temperature drops from 17 to -52*C

Explanation:

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3 years ago

Newton's law of gravitation states that two masses will ______.

spin [16.1K]

Pretty sure the answer is B. Attract each other

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3 years ago

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