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3 years ago

What are the three factors needed for Newton’s Second Law?

Physics

1 answer:

Anastasy [175]3 years ago

5 0

Answer:

the weight of the object, the force of gravity acting on said object, and the mass of the object are needed for Newton's second law of motion.

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Which of these objects absorbs most of the light that strikes it?

Vinvika [58]

A black sweater. Why? Because black is the most absorbent color while as white is reflecting the light. Hope this helps...

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4 years ago

Calculate the impulse imparted when a 3,000-kg car hits a wall at 60 . m/s and comes to a stop.

Pani-rosa [81]

Impulse = change in momentum

The answer is 0.

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3 years ago

Find the tension in the two ropes that are holding the 2.9 kg object in place. Rope 1 makes an angle of 51.3° with respect to th

Gnesinka [82]

Answer:

Explanation:

Let the tension in horizontal rope be T₁ and in the other rope be T₂ which is making angle of 51.3⁰

The vertical component of tension T₂ will balance the weight .

= T₂ cos 51.3 = 2.9 x 9.8

T₂ = 2.9 x 9.8 / cos 51.3

= 28.42 / .625

= 45.47 N

The horizontal component of T₂ will balance T₁

T₂ sin 51.3 = T₁

45.47 sin 51.3 = T₁

T₁ = 35.48 N .

8 0

3 years ago

Cumulative Problem 1

Marrrta [24]

Answer:

Volume, $V=696.55\ \mu m^3$

Explanation:

Given that,

The diameter of a human cell is 11 μm

It is enclosed by a membrane that is 4,4 nm thick.

We need to find the volume of the cell. The cell is spherical in shape. The volume of a sphere is given by the formula as follows :

$V=\dfrac{4}{3}\pi r^3$

r is the radius of the sphere, r = 5.5 μm

So,

$V=\dfrac{4}{3}\times 3.14\times (5.5)^3\\\\V=696.55\ \mu m^3$

So, the volume of the cell is $696.55\ \mu m^3$ .

5 0

3 years ago

Hello! Someone please help me with this.

alukav5142 [94]

Explanation:

VT= 10 v

IT = V/R = 10/5= 2 A

RT= 5 ohm

PT = 20w

${i}^{2} \times r = {2}^{2} \times 5 = 20watts$

7 0

3 years ago