All categories

3 years ago

Using the

Physics

1 answer:

xxMikexx [17]3 years ago

6 0

Answer:

The principle of momentum conservation states that if there no external force the total momentum of the system before and after the collision is conserved.

Since momentum is a vector, we should investigate the directions and magnitudes of initial and final momentum.

$\vec{P}_{initial} = \vec{P}_{final}\\\vec{P}_{initial} = m_1\vec{v}_1 + 0\\\vec{P}_{final} = m_1\vec{v}_1' + m_2 \vec{v}_2'$

If the first ball hits the second ball with an angle, we should separate the x- and y-components of the momentum (or velocity), and apply conservation of momentum separately on x- and y-directions.

You might be interested in

A person rolls a barrel up an inclined plane with a length of 6m and a height of 3m/ How much force is needed to roll up the bar

snow_lady [41]

Answer:

Length (l) = 6 m

height (h) = 3 m

Load(L) = 500 N

Effort (E) = ?

we know the principal that

E * l = L * h

6 E = 500 * 3

6E = 1500

E = 250

therefore 250 N work is done on the barrel.

8 0

4 years ago

When a virus enters a living cell, the virus

sleet_krkn [62]

Answer:

d. causes the cell to make more viruses

Explanation:

Viruses depend on the host cells that they infect to reproduce. When found outside of host cells, viruses exist as a protein coat or capsid, sometimes enclosed within a membrane. The capsid encloses either DNA or RNA which codes for the virus elements.

6 0

3 years ago

Which of the following would be considered a source of geothermal energy?

N76 [4]

Answer:

Explanation:

Magma heats nearby rocks and underground aquifers. Hot water can be released through geysers, hot springs, steam vents, underwater hydrothermal vents, and mud pots. These are all sources of geothermal energy. Their heat can be captured and used directly for heat, or their steam can be used to generate electricity.

4 0

3 years ago

Read 2 more answers

The buoyant force on an object is least when the object is

Arte-miy333 [17]

When the object is partially submerged

6 0

4 years ago

If the Sun were to collapse into a black hole, the point of no return for an investigator would be approximately 3 km from the c

Marysya12 [62]

Answer:

1.97*10⁴N .He cannot survive.

Explanation:

The<em> </em><em>Tidal force</em> can be defined as the difference in force between center of two bodies like center of earth and other bodies.This force stretches the body too and fro from the center of mass of another body due to the difference in the gravitational force.

The tidal force is responsible for various phenomena like ocean tides,celestial body tearing up.

The tidal force is the effect of massive body gravitationally affecting another body.

The tidal force is the difference between the gravitational force of two bodies and directly proportional to the mass of body affecting another body and inversely proportional to the square of radius of the distance between center and the object.

Here let us consider height of person as 2m and d=1m

ΔF= $\frac{GMm}{(R-d)^{2} }$ - $\frac{GMm}{(R+d)^{2} }$

=GMm[ $\frac{1}{(R-d)^{2} }$ - $\frac{1}{(R+d)^{2} }$ ]

=(6.67*10⁻¹¹)(1.99*10³⁰)(1.0)[ $\frac{1}{(300*10^3-1)^{2} }$ - $\frac{1}{(300*10^3+1)^{2} }$ }

ΔF=1.97*10⁴N.

Thus he cannot survive

4 0

3 years ago