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bearhunter [10]
3 years ago
15

The amount of surface area on an uncored block that has holes extending through it is equal to less than

Physics
1 answer:
Mkey [24]3 years ago
4 0
The answer is (Less that 10%).
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How and why will my weight change if i took a trip to the moon
MatroZZZ [7]

weight less on moon than on earth.

high on lift off - G force

low in orbit.

zero at a point between earth and moon

7 0
3 years ago
Read 2 more answers
Current flows through a resistor; (a) with no direction since it is not a vector (b) from any potential to any different potenti
kykrilka [37]

Answer:

c)From high potential to low potential.

Explanation:

Given that

current is flowing through resister.

As we know that those quantity have direction as well as magnitude then these are called vector quantity and those quantity have only magnitude then they called scalar quantity.

As we know that current have direction as well as magnitude so current is a vector quantity.

Current flows from high potential to low potential.

8 0
3 years ago
A SI unit used to measure force, equal to less than one-quarter of a pound, is the what
bulgar [2K]

The SI unit of force is the Newton.

1 newton is the force that accelerates a 1 kilogram mass
at the rate of 1 meter per second².

1 pound of force is equivalent to roughly  4.448 newtons.

(1 newton is equivalent to roughly  0.225  pounds of force.)

4 0
3 years ago
A baby carriage is rolling down a hill at 18 m/s. If the carriage has 90J of kinetic energy, what is the mass of the carriage? a
grin007 [14]

Answer:

why did the parents let go of their child-

Explanation:

A 5 kg, because 90 / 18 is 5

6 0
3 years ago
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An example of when total internal reflection occurs is when all the light passing from a region of higher index of refraction to
Amiraneli [1.4K]

Answer:

is reflected back into the region of higher index

Explanation:

Total internal reflection is a phenomenon that occurs when all the light passing from a region of higher index of refraction to a region of lower index is reflected back into the region of higher index.

According to Snell's law, refraction of ligth is described by the equation

n_1 sin \theta_1 = n_2 sin \theta_2

where

n1 is the refractive index of the first medium

n2 is the refractive index of the second medium

\theta_1 is the angle of incidence (in the first medium)

\theta_2 is the angle of refraction (in the second medium)

Let's now consider a situation in which

n_1 > n_2

so light is moving from a medium with higher index to a medium with lower index. We can re-write the equation as

sin \theta_2 = \frac{n_1}{n_2}sin \theta_1

Where \frac{n_1}{n_2} is a number greater than 1. This means that above a certain value of the angle of incidence \theta_1, the term on the right can become greater than 1. So this would mean

sin \theta_2 > 1

But this is not possible (the sine cannot be larger than 1), so no refraction occurs in this case, and all the light is reflected back into the initial medium (total internal reflection). The value of the angle of incidence above which this phenomen occurs is called critical angle, and it is given by

\theta_c =sin^{-1}(\frac{n_2}{n_1})

8 0
3 years ago
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