How are the relationships of elements in a group different from the relationships of elements in a period?

Answers

Answer 1

Answer: Group - similar reacting properties.
SIMILAR not identical
Period - ever increasing proton number
Answer 2: elements in the same period have the same amount of energy levels (in which electrons orbit around the atomic nucleus)elements in the same group have the same number of valance electrons (which are found in the outer most energy level)

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3. A (n) __ stores food or water in a cell

Answers

a vacuole stores water and food in a cell

A vacoule........im pretty sure

What is the voltage in a circuit if the current is 6.2 A and the resistance is 18 ohms

Answers

We already know the formula:
Voltage = Current * Resistance
In the given question, there are numerous information's that are already given.
Current = 6.2 A
Resistance = 18 ohms
Then
Voltage = 6.2 * 18 Volts
= 111.6 Volt
So, the voltage in the circuit will be 111.6 volts. I hope it helps you.

If you are doing a USA TEST Prep:

D) 111.6 V

What is a tool that can be used to measure the size of a force?

Answers

Force Gauge, Newton meter, dry friction dynomometers, Eddy current dynomometers and hydraulic dynomometers are widely used to measure force.

Newton meter
Torque wrench
Or Just a plain Scale

What are two ways that the Earth's atmosphere is important to life on Earth?

Answers

1). It has oxygen in it, of which we need a steady supply
in order to stay alive.

2). It has pressure, which prevents us from boiling away
and blowing up like balloons.

It keeps objects from easily reaching the surface and destroying earth it also locks in heat

Can someone please help me answer 14 and 15??

Answers

14. The Aurora is an incredible light show caused by collisions between electrically charged particles released from the sun that enter the earth's atmosphere and collide with gases such as oxygen and nitrogen. The lights are seen around the magnetic poles of the northern and southern hemispheres.

15.
About 5.4 billion years from now, the sun will have exhausted all of its hydrogen. The sun's core will get really hot and dense, thus shrinking; however, the outer region of the sun will expand and grow. ... Even if the expanding dying sun doesn't reach Earth, the sun's high temperatures will completely burn the planet.

What happens if there is too much friction?

Answers

Answer: there would be no motion

Explanation:

There would be no motion,as the object get stuck

Answer:

Friction is a force that opposes motion between any surfaces that are touching. Friction can work for or against us. For example, putting sand on an icy sidewalk increases friction so you are less likely to slip. On the other hand, too much friction between moving parts in a car engine can cause the parts to wear out.

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The initial kinetic energy imparted to a 0.020 kg bullet is 1200 J. (a) Assuming it accelerated down a 1.00 m rifle barrel, estimate the average power delivered to it during the firing. (b) Neglecting air resistance, find the range of this projectile when it is fired at an angle such that the range equals the maximum height attained.