In transverse waves, the medium moves perpendicular to the direction of energy transport. true false

What would the overall resistance be in a series circuit if there's an unknown R, 3Ω,3Ω and a current of 2A?

irinina [24]

Answer:

R + 6 ohms

Explanation:

The current is the same in all three resistors

i = 2 amps

The problem is that the total voltage is unknown.

R = r

R1 =3 ohms

R2 = 3 ohms

The voltage drop is E = I*R

I = 2 amps

R1 = 3 ohms

E = 3*2 = 6 volts

The second 3 ohm resistor also has 6 volts across it.

The total is 12 volts so far. But we know nothing more on how to solve for R.

All you can say is that the total resistance = R + 6 ohms

3 0

2 years ago

Be sure to answer all parts. Calculate the mass of each of the following: (a) a sphere of gold with a radius of 12.5 cm. (The vo

alexdok [17]

(a) $1.58\cdot 10^5 g$

The radius of the sphere is:

r = 12.5 cm

So the volume of the sphere of gold is

$V=\frac{4}{3}\pi r^3 = \frac{4}{3}\pi (12.5 cm)^3=8181 cm^3$

The density of gold is

$d=19.3 g/cm^3$

So the mass of the sphere is

$m=dV=(19.3 g/cm^3)(8181 cm^3)=1.58\cdot 10^5 g$

(b) $2.53\cdot 10^{-6} g$

The length of one side of the cube is

L = 0.049 mm = 0.0049 cm

So the volume of the cube of platinum is

$V=L^3 = (0.0049 cm)^3=1.18\cdot 10^{-7}cm^3$

The density of platinum is

$d=21.4 g/cm^3$

So the mass of the cube is

$m=dV=(21.4 g/cm^3)(1.18\cdot 10^{-7} cm^3 )=2.53\cdot 10^{-6} g$

(c) 53.5 g

The volume of the ethanol is

V = 67.1 mL

While its density is

d = 0.798 g/mL

So the mass of the ethanol is

$m=dV=(0.798 g/mL)(67.1 mL)=53.5 g$

8 0

2 years ago

What is the zone above the snow line on a glacier called

Mekhanik [1.2K]

<span>una neve di <span>accumulo</span></span>

4 0

3 years ago

English units of distance include the

Masja [62]

Answer:mile

Explanation: heres a hint think aboyt the distance between your house to school

8 0

2 years ago

13. What happens to the number of times you must rotate a screw in order to drive it into

zvonat [6]

Answer:

B

Explanation:

6 0

1 year ago