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pentagon [3]
3 years ago
5

Which is the best definition of wind?

Physics
2 answers:
LekaFEV [45]3 years ago
5 0
Wind moves in all directions so it's not A, B, or C.

It's D. the movement of air between two objects that are in contact<span>
</span>
snow_lady [41]3 years ago
5 0

The answer is D. the movement of air between two objects that are in contact.


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A 5.0-Ω resistor and a 9.0-Ω resistor are connected in parallel. A 4.0-Ω resistor is then connected in series with this parallel
lbvjy [14]
The 4ohm resistor is not parallel to any devices, so the current through it is the same as the total current through the circuit.

Apply I = V/R
I = total current, V = battery voltage, R = total resistance

Calculate the total resistance R of the circuit first.

R will be the sum of the 4ohm resistor and the resistance of the 5&9ohm parallel resistors. To find the resistance of the pair, you apply the “sum of inverses” rule:

R = 1/(1/5 + 1/9) = 3.21ohm

Now add the 4ohm resistor:
R = 3.21 + 4 = 7.21ohm

Now let’s calculate I = V/R:
Given values:
V = 6.0V
R = 7.21ohm
Plug in and solve for I:
I = 6.0/7.21

I = 0.83A
8 0
4 years ago
Question 4 of 11
givi [52]

Answer: C

C. Place plastic around the metal wires, because electric charges

hardly move in plastic.

4 0
3 years ago
The heart damaging chemical found in the blood that association with long term depression is
adoni [48]
The answer is homocysteine hehe hope this helps
3 0
4 years ago
Which of the following (with specific heat capacity provided) would show the smallest temperature change upon gaining 200.0 J of
sergij07 [2.7K]

Answer:

A) 50.0 g Al

Explanation:

We can calculate the temperature change of each substance by using the equation:

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

where

Q = 200.0 J is the heat provided to the substance

m is the mass of the substance

C_s is the specific heat of the substance

Let's apply the formula for each substance:

A) m = 50.0 g, Cs = 0.903 J/g°C

\Delta T=\frac{200}{(50)(0.903)}=4.4^{\circ}C

B) m = 50.0 g, Cs = 0.385 J/g°C

\Delta T=\frac{200}{(50)(0.385)}=10.4^{\circ}C

C) m = 25.0 g, Cs = 0.79 J/g°C

\Delta T=\frac{200}{(25)(0.79)}=10.1^{\circ}C

D) m = 25.0 g, Cs = 0.128 J/g°C

\Delta T=\frac{200}{(25)(0.128)}=62.5^{\circ}C

E) m = 25.0 g, Cs = 0.235 J/g°C

\Delta T=\frac{200}{(25)(0.235)}=34.0^{\circ}C

As we can see, substance A) (Aluminium) is the one that undergoes the smallest temperature change.

7 0
3 years ago
Light travels through a vacuum at a speed of 3 x 10 m/s. What is the speed of
Andrew [12]

Answer:

v = c / n      (n = 1 for air)

v = c / 1.33 = 3 * 10E8 m/s / 1.33 = 2.25 * 10E8 m/s

3 0
4 years ago
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