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3 years ago

Which statement best describes the change in an objects momentum if the net force acting on the object is greatly increased ?

Physics

2 answers:

natta225 [31]3 years ago

4 0

Answer:

The object’s momentum will greatly increase if the net force acting on the object is greatly increased. So option C is the best statement which describes the change in object momentum.

Explanation:

So as the force is directly proportional to momentum and it is obtained by performing the first order derivation of momentum, the variation in force and momentum will have to be same.

$F = \frac{MomentumChange}{time}$

The force being the derivative of momentum indicates that if the net force acting on object is greatly increased means the momentum will also be undergoing great increase as the acceleration of the object will also be increased greatly due to increase of force.

garri49 [273]3 years ago

3 0

Answer:

Answer C : The object's momentum will greatly increase

Explanation:

Recall that force and linear momentum are closely related by the equation:

$F = \frac{MomentumChange}{time}$

Both, Momentum Change and Force (F) are in the numerator of on either side of the equation, so they are in direct proportionality. A large force (force greatly increased) will be the reflection of a large change in momentum.

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Bob has a cup of hot chili. It is too hot to eat.

Kazeer [188]

Answer:

B. It has increased the chili's potential energy

Explanation:

When there is an increase in the kinetic energy of a substance, the vibrations of atoms and molecules of the substance increases.

This kinetic energy increases the thermal energy of the substance.

So, when there is a decrease in the thermal energy of a substance, the kinetic energy decreases because the random motion of the molecules or atoms becomes feeble.

If the kinetic energy of the substance decreases, the potential energy of the substance increases.

So, if the chili has cooled after 10 minutes, it has increased the potential energy of the substance.

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3 years ago

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the strong nuclear force is one which acts only on the ____________ (A) electrons in the electron cloud (B) attraction between a

ch4aika [34]

The strong nuclear force is the force that holds nucleons, aka protons and neutrons in the nucleus together, through the boson called the gluon. It also holds quarks together, which constitutes the protons and neutrons.

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4 years ago

A girl walks 5km due north,then in the direction of 60° of northeast towards her final destination.If the magnitude of her resul

storchak [24]

Answer:

4.2 km

Explanation:

A triangle is a polygon with three sides and three angles. There are different types of triangles such as isosceles triangle, scalene triangle, equilateral triangle and right angled triangle.

Sine rule states that for a triangle with angles A,B and C and corresponding opposite sides a, b, and c, the following formula holds:

$\frac{a}{sin(A)}=\frac{b}{sin(B)}=\frac{c}{sin(C)}$

Let the starting point be A, hence the side opposite to the angle = a = distance travelled in north east direction.

Let the point of 60° of northeast be B = 90° + (90° - 60°) = 120°, hence the side opposite to the angle = b = resultant displacement = 8 km.

Let C be the endpoint, hence the side opposite to the angle = c = distance travelled north = 5 km

Using sine rule:

$\frac{b}{sin(B)}=\frac{c}{sin(C)} \\\\\frac{8}{sin(120)}=\frac{5}{sin(C)} \\\\sin(C)=\frac{5*sin(120)}{8} =0.5412\\\\C=sin^{-1}(0.5412)=32.8^o\\\\$

∠A + ∠B + ∠C = 180° (sum of angle in a triangle)

∠A + 120 + 32.8 = 180

∠A = 27.2°

$\frac{b}{sin(B)}=\frac{a}{sin(A)} \\\\\frac{8}{sin(120)}=\frac{a}{sin(27.2)} \\\\a=\frac{8*sin(27.2)}{sin(120)} \\\\a=4.2\ km$

Therefore she travelled 4.2 km in the north east direction

5 0

3 years ago

Which two options are forms of potential energy

blsea [12.9K]

Answer:

e and b

Explanation:

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3 years ago

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Two students who live on planet X. They want to estimate the circumference. The two students synchronize their watches before on

dexar [7]

Answer:

72000 miles

Explanation:

If the distance between the students is 600 miles, and this implies in a 3 degree difference in the sun position, that means this 600 miles is related to 3 degrees of the circunference of the planet.

So, to find the whole circunference of the planet, that is, 360 degrees, we just need to use a rule of three:

3 degrees -> 600 miles

360 degrees -> x miles

3x = 600 * 360

x = 600 * 360 / 3 = 72000 miles

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3 years ago