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3 years ago

HELP ME ILL MARK YOU THE BRAINLIEST

Physics

2 answers:

OleMash [197]3 years ago

7 0

Option C: Later in the day, less power is developed in lifting each box

sp2606 [1]3 years ago

3 0

Answer:

Later in the day, less power is developed in lifting each box.

power= workdone÷time

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The moon is in a nearly circular orbit of radius r = 384000000 meters

PSYCHO15rus [73]

Answer:

$2.72\cdot 10^{-3} m/s^2$

Explanation:

The centripetal acceleration of an object in circular motion is the acceleration with which the object is attracted towards the center of the circular orbit. Mathematically, it is given by

$a=\frac{v^2}{r}$

where

v is the speed of the object

r is the radius of the orbit

The speed of the object is also given by the ratio between the circumference of the orbit and the orbital period, T:

$v=\frac{2\pi r}{T}$

Substituting into the previous equation, we find a new expression for the centripetal acceleration:

$a=\frac{4\pi^2 r}{T^2}$

In this problem:

- The radius of the orbit of the Moon is

$r = 384000000 m = 3.84\cdot 10^8 m$

- The period of the orbit is

$T=27.32 d \cdot 24\cdot 60\cdot 60 =2.36\cdot 10^6 s$

Therefore, the centripetal acceleration is:

$a=\frac{4\pi^2 (3.84\cdot 10^8)}{(2.36\cdot 10^6)^2}=2.72\cdot 10^{-3} m/s^2$

5 0

3 years ago

A coin has a radius of 1.06 cm and a thickness of 1.2 mm. Find its volume in m^3.

ANTONII [103]

Answer:

The volume of the coin is 4.236 x 10⁻⁷ m³

Explanation:

Given;

radius of a coin, r = 1.06 cm = 0.0106 m

thickness of the coin, h = 1.2 mm = 0.0012 m

The volume of the coin is given by;

volume = Area x thickness

Area of the coin = πr² = π (0.0106)² = 3.5304 x 10⁻⁴ m²

The volume of the coin = (3.5304 x 10⁻⁴ m²) x (0.0012 m)

The volume of the coin = 4.236 x 10⁻⁷ m³

Therefore, the volume of the coin is 4.236 x 10⁻⁷ m³

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3 years ago

Everything in the world has the same density. True or False?

JulijaS [17]

False
Nothing has the same destiny everything has their own destiny to follow

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3 years ago

What transfer of energy is occurring between magnetism and electricity

ioda

I believe its air particles

6 0

4 years ago

What is missing from this graph? (A) A title. (B) Axis labels. (C) A trendline.

SIZIF [17.4K]

Axis labels. We don’t know what is being compared with the data

5 0

3 years ago

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