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Anarel [89]
3 years ago
7

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has

Physics
2 answers:
insens350 [35]3 years ago
5 0

Answer:

A) a low specific heat.

Explanation:

As we know that heat given to the sand will increase it temperature

so we can say

Q = ms\Delta T

here we will have

\Delta T = \frac{Q}{ms}

so now we will have

more change in temperature due to heat given to the sand will show that it must have low specific heat capacity as it inversely depends on the specific heat capacity of the sand

so correct answer will be

A) a low specific heat.

4vir4ik [10]3 years ago
4 0

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has  

A) a low specific heat. Answer: A

Explanation: Because the fact that desert sand is very hot in the day and very cold at night is evidence that sand has  

A) a low specific heat.

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Atoms are known to form charges due to their ability to gain and lose electrons in reactions. As a result, atoms
galben [10]

Answer:

C. Fe: 24 electrons

Explanation:

From the analogy given, the atom with a charge of +2 is Fe having 24 electrons.

To calculate the charges on an atom;

     Number of charges = Number of protons - Number of electrons.

   O: 10 electrons: 8 protons = 8 - 10 = -2

   N: 10 electrons; 7 protons = 7 - 10 = -3

   Cl: 18 electrons; 17 protons = 17 - 18 = -1

So;

    Fe: 24 electrons and 26 protons = 26 -24  = +2

Therefore, the solution is Fe

7 0
3 years ago
(Repost) I need help with this physics question. Thanks in advance! Answer ASAP.
Kitty [74]

The time taken for the tiny saliva to travel is 0.55 second.

The  horizontal distance traveled at speed of 4 m/s is 2.2 m.

The horizontal distance traveled at speed of 20 m/s is 11 m.

<h3>Time of motion of the tiny saliva</h3>

The time taken for the tiny saliva to travel is calculated as follows;

h = vt + ¹/₂gt²

where;

  • v is initial vertical velocity  = 0
  • g is the acceleration due to gravity

h = 0 + ¹/₂gt²

h = ¹/₂gt²

2h = gt²

t² = 2h/g

t = √(2h/g)

Substitute the given parameters and solve for time of motion;

t = √(2 x 1.5 / 10)

t = 0.55 second

<h3>Horizontal distance traveled at speed of 4 m/s</h3>

X = Vx(t)

X = (4 m/s)(0.55)

X = 2.2 m

<h3>Horizontal distance traveled at speed of 20 m/s</h3>

X = (20)(0.55)

X = 11 m

Learn more about time of motion here: brainly.com/question/2364404

#SPJ1

3 0
2 years ago
A zebra drinks from a watering hole and is ambushed by a crocodile. What's more important and why: the zebra having a high maxim
elena55 [62]

Answer:

before this type of attack, high acceleration is the most important thing.

Explanation:

As the zebra is ambushed by the crocodile the most important thing is a quick reaction, in this attack the most likely is that the crocodile is in the water so it cannot run after the zebra.

Consequently, before this type of attack, high acceleration is the most important thing.

5 0
2 years ago
Someone please help me!
beks73 [17]

Answer:

current = 8,750

Explanation:

you will need to use the formula i = v/r to get this answer

3 0
3 years ago
The upward and downward movement of air in the atmosphere creates pressure systems. Arrange the steps in the correct order to de
OleMash [197]

Answer:

  1. Cool, dense air begins to sink downward.
  2. A high-pressure system forms.
  3. Pressure differences cause wind to blow outward.
  4. The skies clear, making way for pleasant weather.

Explanation:

The air near the land warms up and rises. Cool dense air sinks being heavier. This creates a pressure difference. A high pressure system forms. This difference leads to blowing of wind from High pressure to low pressure area. Eventually sky gets clear and we experience pleasant weather. Hence, the correct order to describe this is:

  1. Cool, dense air begins to sink downward.
  2. A high-pressure system forms.
  3. Pressure differences cause wind to blow outward.
  4. The skies clear, making way for pleasant weather.
4 0
3 years ago
Read 2 more answers
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