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3 years ago

What is the purpose of a free body diagram

2 answers:

4 0

<span>A free body diagram is a representation of how the forces that are acting on a point or particle interact. You place your point at the origin and then draw your forces.

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Inga [223]3 years ago

4 0

Answer:

The purpose of a free body diagram is to make a visual representation of all the forces acting on an object.

In a free-body diagram, the object is represented at the centre; every force acting on the object is represented as an arrow, starting from the centre of the object, and with a length proportional to the magnitude of the force and direction equal to the direction of the corresponding force.

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Explain how newton's third law of motion is at work when you walk

Jet001 [13]

Action reaction when you push on the ground the ground pushes you back

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4 years ago

Beings on spherical asteroid have observed that a large rock is approaching their asteroid in a collision course. At 7514 km fro

luda_lava [24]

Answer:

c. $4.582\times10^{21} kg$

Explanation:

$r_{i}$ = Initial distance between asteroid and rock = 7514 km = 7514000 m

$r_{f}$ = Final distance between asteroid and rock = 2823 km = 2823000 m

$v_{i}$ = Initial speed of rock = 136 ms⁻¹

$v_{f}$ = Final speed of rock = 392 ms⁻¹

$m$ = mass of the rock

$M$ = mass of the asteroid

Using conservation of energy

Initial Kinetic energy of rock + Initial gravitational potential energy = Final Kinetic energy of rock + Final gravitational potential energy

$(0.5) m v_{i}^{2} - \frac{GMm}{r_{i}} = (0.5) m v_{f}^{2} - \frac{GMm}{r_{f}} \\(0.5) v_{i}^{2} - \frac{GM}{r_{i}} = (0.5) v_{f}^{2} - \frac{GM}{r_{f}} \\(0.5) (136)^{2} - \frac{(6.67\times10^{-11}) M}{(7514000)} = (0.5) (392)^{2} - \frac{(6.67\times10^{-11}) M}{(2823000)} \\M = 4.582\times10^{21} kg$

8 0

4 years ago

Plz help ASAP please !!

Salsk061 [2.6K]

Answer:

answer is A

Explanation:

hope this helps:]

7 0

3 years ago

Which action is due to field forces

Lilit [14]

Answer:

Explanation:

Raindrops fall on the earth due to gravitational field force. When two magnets come closer to each other, they will either attract or repel each other, which is magnetic field force examples. Without any physical contact, iron pins get attracted towards the magnet as a field force.

3 0

3 years ago

How many resonance structures does aniline have after the first step of electrophilic aromatic substitution?

professor190 [17]

Answer:

Electrophilic aromatic substitution involves a process in an atom that is attached to an aromatic system is replaced by a electrophile. Electrophile is an electron pair acceptor. In the first step of electrophilic aromatic substitution of aniline, aniline has 3 resonance structures.

Explanation:

Aniline undergo a two step electrophilic aromatic substitution. The first step yields both ortho and para groups while the last yield a meta group.

In the first step, the amino group of aniline are strong activating group and ortho/para directing by resonance. This amino groups donates their unshared electrons to the pi-system creating a negative charge on the ortho and para positions. These positions are most reactive towards an electron-poor electrophile.

In the second step, the electrophilic aromatic substitution on aniline proceeds quite slowly to give an unexpected high yield of meta product.

8 0

4 years ago