All categories

3 years ago

The total capacitance of two 15uF capacitors connected in parallel is

Physics

1 answer:

Yuri [45]3 years ago

7 0

The total capacitance of two 15uF capacitors connected in parallel is 30 μF .

You might be interested in

A concrete highway is built of slabs 12 m long .How wide should be the expansion cracks between the slabs at 15 Celsius to preve

morpeh [17]

Answer:

$x=4.2\ mm$

Explanation:

Given:

length of the concrete slab, $l=12\ m$

temperature of observation, $T_o=15^{\circ}C$

we've the coefficient of linear expansion for concrete, $\alpha=10^{-5}\ ^{\circ}C^{-1}$

lower temperature limit, $T_l=-30^{\circ}C$

upper temperature limit, $T_u=50^{\circ}C$

Change in length due to temperature can be given as:

$\Delta l=l.\alpha.(T_u-T_l)$

$\Delta l=12\times 10^{-5}\times (50-(-30))$

$\Delta l=0.0096\ m=9.6\ mm$

Now at temperature 15°C:

$\Delta l'=12\times 10^{-5}\times (15-(-30))$

$\Delta l'=0.0054\ m=5.4\ mm$

Hence the expansion crack between the slabs at this temperature must be:

$x=\Delta l-\Delta l'$

$x=9.6-5.4$

$x=4.2\ mm$

3 0

3 years ago

The flow of electrons throughout a circuit is known as

TEA [102]

Answer:

Electric current is flow of electrons in a circuit.

Explanation:

Wires are made up of conductors such as copper or aluminum. Atoms of metal are made up of free electrons, which freely move from one atom to the next. If an electron is added in wire, a free electron is attracted to a proton to be neutral. Forcing electrons out of their orbits can cause a lack of electrons. Electrons, which continuously move in wire, are called Electric Current.

3 0

3 years ago

Read 2 more answers

The velocity of a car changes from 50 m/s north to 40 m/s north in 2 seconds. What is the car’s acceleration?

Zigmanuir [339]

Acceleration is defined as the change in velocity divided by the change in time. Since the velocity changed from 50 m/s to 40 m/s (-10 m/s change) in 2 seconds, then the acceleration is (-10/2) = -5 m/s^2 northward. Hope this helps!

4 0

4 years ago

A spiral staircase winds up to the top of a tower in an old castle. To measure the height of the tower, a rope is attached to th

boyakko [2]

Answer:

8.76762 m

Explanation:

T = Time period = 5.94 seconds

g = Acceleration due to gravity = 9.81 m/s²

L = Length of pendulum = Height of tower

Time period is given by

$T=2\pi \sqrt{\dfrac{L}{g}}\\\Rightarrow T^2=4\pi^2\dfrac{L}{g}\\\Rightarrow L=\dfrac{T^2g}{4\pi^2}\\\Rightarrow L=\dfrac{5.94^2\times 9.81}{4\pi^2}\\\Rightarrow L=8.76762\ m$

The height of the tower is 8.76762 m

8 0

3 years ago

HELP I WILL MARK BRAINLIEST

Natasha_Volkova [10]

The dogs centripetal acceleration is 2.4 meters/second^2

7 0

3 years ago