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3 years ago

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According to Newton's second law, the acceleration of an object depends on its_ and the amount of _ applied to it.

1 answer:

o-na [289]3 years ago

8 0

<h3>Solution:</h3>

Firstly, we should find out what is Newton's Second Law of Motion.

It states "The rate of change of momentum of an object is directly proportional to the applied unbalanced force in the direction of the force."

In other words, the rate of change of momentum of an object is the acceleration of that object.

According to Newton's Second Law of Motion, F = ma, where F is the force, m is the mass and a is the acceleration.

So, F ∝ a

Also, F = ma

or, F/m = a

or, 1/m ∝ a.

So, we see that from Newton's Second Law, the acceleration of an object is directly proportional to the force acting upon the object, and inversely proportional to the mass of the object.

So, the acceleration depends on two variables:

Mass of the object
Amount of force applied to it

<h3>Answer:</h3>

According to Newton's second law, the acceleration of an object depends on its <u>mass</u> and the amount of <u>force</u> applied to it.

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Which two of the following are the densest of the materials shown?

kari74 [83]

Explanation:

The density of the material is given by,

Density = $\frac{mass}{Volume}$

Case 1: Rock

Density = $\frac{mass}{Volume}$

Density = $\frac{1000}{0.5}$

Density = 2000 $\frac{g}{L}$

Case 2: Pillow

Density = $\frac{mass}{Volume}$

Density = $\frac{200}{10}$

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Density = 1000 $\frac{g}{L}$

Case 4: Load of bread

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A flat loop of wire consisting of a single turn of cross-sectional area 8.20 cm2 is perpendicular to a magnetic field that incre

olga nikolaevna [1]

Answer:

The induced current is $I = 6.25*10^{-4} \ A$

Explanation:

From the question we are told that

The number of turns is $N = 1$

The cross-sectional area is $A = 8.20 cm^2 = 8.20 * 10^{-4} \ m^2$

The initial magnetic field is $B_i = 0.500 \ T$

The magnetic field at time = 1.02 s is $B_t = 2.60 \ T$

The resistance is $R = 2.70\ \Omega$

The induced emf is mathematically represented as

$\epsilon = - N * \frac{ d\phi }{dt}$

The negative sign tells us that the induced emf is moving opposite to the change in magnetic flux

Here $d\phi$ is the change in magnetic flux which is mathematically represented as

$d \phi = dB * A$

Where dB is the change in magnetic field which is mathematically represented as

$dB = B_t - B_i$

substituting values

$dB = 2.60 - 0.500$

$dB = 2.1 \ T$

Thus

$d \phi = 2.1 * 8.20 *10^{-4}$

$d \phi = 1.722*10^{-3} \ weber$

So

$|\epsilon| = 1 * \frac{ 1.722*10^{-3}}{1.02}$

$|\epsilon| = 1.69 *10^{-3} \ V$

The induced current i mathematically represented as

$I = \frac{\epsilon}{ R }$

substituting values

$I = \frac{1.69*10^{-3}}{ 2.70 }$

$I = 6.25*10^{-4} \ A$

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4 years ago

About how long does it take the sun to rotate once about its axis?

Troyanec [42]

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sleet_krkn [62]

Answer:

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Explanation:

Arthur and Betty should be walking the same amount of time if they start walking at the same time and stop when they meet = t

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Speed of Betty = 2 m/s

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Distance covered by Arthur = 3t

Distance covered by Betty = 2t

The distance covered by both of them will be 100 m

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The speed of dog is 5 m/s

Spot is running back and forth at 5 m/s for 20 seconds

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