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vampirchik [111]
2 years ago
12

Which explanation BEST supports Newton's second law of motion which states that force = mass x acceleration?

Physics
1 answer:
GaryK [48]2 years ago
8 0
The answer is C. F=ma basically says that force is a function of mass multiplied by acceleration. The first two answers don’t make sense because there’s no necessary relationship between mass and acceleration. And for the last two, the higher the mass, the higher the force needed, therefore C is the correct answer.
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What characteristics determined the classification of an organism in kingdoms?
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3 years ago
In photosynthesis, carbon dioxide is converted to oxygen and then released.
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Read 2 more answers
Introduces una masa de 80g en una probeta con 60cm cúbicos de agua y el nivel sube hasta 75cm cúbicos. qué densidad tiene la mas
ExtremeBDS [4]

Answer:

d=5.33\ gr/cm^3

Explanation:

<u>Densidad</u>

La densidad de una masa m que ocupa un volumen v se define como:

\displaystyle d=\frac{m}{V}

Tenemos que una masa de 80 gr hace que un volumen de agua se desplace desde 60 cm3 hasta 75 cm3, es decir, el volumen propio de la masa es m = 75 - 60 = 15 cm3.

Con esta información se calcula la densidad:

\displaystyle d=\frac{80\ gr}{15\ cm^3}

Operando:

\boxed{d=5.33\ gr/cm^3}

4 0
3 years ago
it's nighttime, and you've dropped your goggles into a swimming pool that is 3.2 m deep. If you hold a laser pointer 1.0 m above
Scrat [10]

Answer:

5.2 m

Explanation:

from the question we are given the following

depth of pool (d) = 3.2 m

height of laser above the pool (h) = 1 m

point of entry of laser beam from edge of water (l) = 2.5 m

we first have to calculate the angle at which the laser beam enters the water (∝),

tan ∝ = \frac{1}{2.2}

∝ = 24.44 degrees

from the attached diagram, the angle with the normal (i) = 90 - 24.4 = 65.56 degrees

lets assume it is a red laser which has a refractive index of 1.331 in water, and with this we can find the angle of refraction (r) using the formula below

refractive index = \frac{sin i}{sin r}

1.331 = \frac{sin 65.56}{sin r}

r = 43.16 degrees

we can get the distance (x) from tan r = \frac{x}{3.2}

tan 43.16 = \frac{x}{3.2}

x = 3 m

To get the total distance we need to add the value of x to 2.2 m

total distance = 3 + 2.2 = 5.2 m

3 0
2 years ago
26. A single-turn wire loop is 2.0 cm in diameter and carries a 650- mA current. Find the magnetic field strength (a) at the loo
nexus9112 [7]

Answer:

(a) Magnetic field at the center of the loop is 4.08 x 10⁻⁵ T

(b) Magnetic field at the axis of the loop is 5.09 x 10⁻⁹ T

Explanation:

Given :

Diameter of the circular loop = 2 cm

Radius of the circular loop, R = 1 cm = 0.01 m

Current flowing through the circular wire, I = 650 mA = 650 x 10⁻³ A

(a) Magnetic field at the center of circular loop is determine by the relation:

B=\frac{\mu_{0}I }{2R}

Here μ₀ is vacuum permeability constant and its value is 4π x 10⁻⁷ T m²/A.

Substitute the suitable values in the above equation.

B=\frac{4\pi\times10^{-7}\times650\times10^{-3}    }{2\times0.01}

B = 4.08 x 10⁻⁵ T

(b) Distance from the center of the loop, z = 20 cm = 0.2 m

Magnetic field at the point on the axis of the loop is determine by the relation:

B=\frac{\mu_{0}IR^{2}  }{2(z^{2}+R^{2})^{3/2}   }

B=\frac{4\pi\times10^{-7}\times650\times10^{-3}\times (0.01)^{2}  }{2((0.2)^{2}+(0.01)^{2})^{3/2}   }

B = 5.09 x 10⁻⁹ T

4 0
3 years ago
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