All categories

3 years ago

Which is required for

Physics

1 answer:

vaieri [72.5K]3 years ago

5 0

Answer:

You need (B) Two substances in direct contact with one another to have conduction.

I hope this helped at all.

You might be interested in

All the mass we ever encounter is positive - nothing weighs less than zero. What makes us think charge is different that there a

egoroff_w [7]

Based on the number of positive and negative charges

<u>Explanation</u>:

In a positive charge particle, the number of proton is higher than the number of electron. Due to this fact alone, we can come to the conclusion that positive charge consists of more number of protons than electrons.
In a negative charge particle, the number of electron is higher than the number of proton. Due to this fact alone, we can come to the conclusion that negative charge consists of more number of electrons than protons.

4 0

3 years ago

Assuming atmospheric pressure to be 1.01 x 10^5 Pa and the density of sea water to be 1025 kg/m^3, what is the absolute pressure

Rudik [331]

To solve for absolute pressure, you will need this formula:

$P_{total} = P_{atm} + (rgh)$

Where: $P_{total}$ = absolute pressure
$P_{total}$ = atmospheric pressure
r (rho) = density
g = acceleration due to gravity constant $9.8 \frac{m}{ s^{2} }$
h = depth (in this case)

rgh is the formula for pressure of fluids

So with your given, we just need to insert it into the formula:

$P_{total} = P_{atm} + (rgh)$
$P_{total}$ = 1.01 x $10^{5}$ x (1,025 $\frac{kg}{m^3}$ x 9.8 $\frac{m}{{s^2}}$ x 15 m
$P_{total}$ = 1.01 x $10^{5}$ + 150,675
$P_{total}$ = 1.01 x $10^{5}$ + 1.51 x $10^{5}$

$P_{total}$ = 2.52 x $10^{5}$ This is your absolute pressure.

3 0

3 years ago

Can some answer 7 a and b please

pav-90 [236]

Answer:

a.After $15$ second Mr Comer's speed $=$ $1.7 m/s$

b.Distance travelled by Mr.Comer in $15$ seconds $=$ $18.75\ m$

Explanation:

a. Lets recall our first equation of motion $V_{f} =V_{i} + at$

Now we know that $V_{i} = 0.8m/s$ , $a = 0.06\ m/s^2$ and

$t = 15 \ sec$

Plugging the values we have.

$V_{f} =V_{i} + at$

$V_{f} =0.8 + 0.06 \times 15$

$V_{f} =0.8+ 0.9$

$V_{f} =1.7 m/s$

Then Mr.Comer's speed after $15$ sec $=$ $1.7ms^-1$

Lets find the distance and recall our third equation of motion.

$V_{f} ^2-V{i}^2 = 2as$

So $s =$ distance covered.

Dividing both sides with 2a we have.

$\frac{V_{f} ^2-V{i}^2}{2a} = 2as$

Plugging the values.

$\frac{(1.7)^2-(0.8)^2}{2\times0.06} = 2as$

$s= 18.75\ m$

So Mr.Comer will travel a distance of $s= 18.75\ m$ .

4 0

4 years ago

I will give the Branliest!!! In which body of water can you see your reflected image better, a pond or an ocean? Why? (Please ex

GREYUIT [131]

Answer:

I would say a pond

Explanation:

A pond is more still than an ocean, therefore you could see your reflection better

4 0

3 years ago

Read 2 more answers

A __________ change occurs when the bonds between atoms or molecules change and a new substance forms. nuclear permanent physica

algol13

<span>A chemical change occurs when the bonds between atoms and molecules change, and a new substance forms. This chemical change may or may not be permanent and may or may not physically affect an object. However, it always affects the chemical composition.</span>

8 0

3 years ago