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Alenkasestr [34]
3 years ago
14

Scientists have measured the distance between the Earth and the Moon by reflecting a beam of laser

Physics
1 answer:
FrozenT [24]3 years ago
5 0

Answer:

a)speed of light.

a)speed of light×time=distance.

Explanation:

light has a constant speed of 299,792,458m/s

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An air-filled parallel-plate capacitor has plates of area 2.30 cm2 2 separated by 1.50 mm. The capacitor is connected to a 12.0-
Gnoma [55]

Answer:

1.357\times 10^{-12}

Explanation:

Relevant Data provided

Area which indicates A = 2.3 cm^2 = 2.3 x 10^-4 m^2

Distance which indicates d = 1.50 x 10^-3 m

Voltage which indicates V = 12 V

According to the requirement, the computation of value of its capacitance is shown below:-

Capacitance, C =  \frac{\epsilon oA}{D}

= \frac{= 8.854\times 10^{-12}\times 2.3\times 10^{-4}}{(1.5 \times 10^{-3})}

= 1.357\times 10^{-12}

Therefore for computing the capacitance we simply applied the above formula.

4 0
3 years ago
What did Niels Bohr discover?
saveliy_v [14]

Niels Bohr discovered of the nucleus and developed an atomic model

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5 0
3 years ago
An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary
Alenkinab [10]

Answer:

T =  4200N

Explanation:

When the submersible craft is at rest, the tension in the cable is 6000N.

With this information you can calculate the weight of the craft by summing the forces (the summation of the force is zero because the craft is at rest):

T-W=0\\\\W=T=6000N

When the craft is going down with a constant speed, there is a drag force of 1800N. Then, by using the second Newton law you have:

T-W+F_d=0   (1)

Fd: drag force

The summation of the forces is zero because the craft moves with constant velocity, that is, there is no acceleration.

You calculate the new tension on the cable by solving the equation (1) for T:

T=W-Fd=6000N-1800N=4200N

hence, the tension is 4200N

5 0
3 years ago
What is the defining feature of isotopes of the same element?
pogonyaev

Answer: Isotopes. An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.

https://www.sciencedirect.com › topics

6 0
2 years ago
. State any three applications of conduction​
vampirchik [111]
A Radiator, a heating pad, and car engine
8 0
3 years ago
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