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3 years ago

13

35 POINTSS!!! PLSSSS HELLPPP!!!

1 answer:

Crazy boy [7]3 years ago

6 0

Answer:

T

beacuse:

Energy can be transferred from one object to another by doing work. ... When work is done, energy is transferred from the agent to the object, which results in a change in the object's motion (more specifically, a change in the object's kinetic energy).

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A mass hanging from a spring oscillates with a period of 0.35 s. Suppose the mass and spring are swung in a horizontal circle, w

Annette [7]

Answer:

66 rpm

Explanation:

The period of oscillation is given by

$T=2\pi \sqrt{\frac {m}{k}}$

$\frac {k}{m}=\frac {4\pi^{2}}{T^{2}}$ where T is time period of oscillation which is given as 0.35 s, k s spring constant and m is the mass of the object attached to the spring.

Also, net force is given by

Net force= $m\omega^{2} L$

$\omega=\sqrt{\frac {k\triangle L}{mL}}$ where $\triangle L$ is the elongation, L is original length, $\omega$ is the angular velocity

Substituting the equation of $\frac {k}{m}$ into the above we obtain

$\omega=\sqrt {\frac {4\pi^{2}\triangle L}{T^{2} L}}$

$\omega=\sqrt {4\pi^{2}\times 0.15L}{0.35^{2}\times L}}=6.952763\approx 6.95 rad/s$

$6.95\times\frac {60 s}{2\pi rad}\approx 66 rpm$

6 0

3 years ago

The length and mass of the arm are Larm = X1 = 50 cm and Marm = 0.3 kg, X2 = 15 cm, and the mass of the object is MObject = 0.25

max2010maxim [7]

Answer: 0.5N

Explanation: if the system is at equilibrium, sum of the torque will be equal to zero.

But if they are not in equilibrium.

U will find the difference in the two torque

find the attached file for solution

3 0

3 years ago

A vehicle travels 53 km both north and east. What is the<br> vehicle's displacement?

gizmo_the_mogwai [7]

75km

I dont really know how to do the math but thats what my teacher told me when i asked

8 0

3 years ago

Consider the earth-moon system, the solar system, the galaxy and the universe. which is largest?

Anni [7]

I'd suppose that the universe is largest, considering that it contains earth-moon system, the solar system, AND hundreds of thousands of galaxies

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4 years ago

Part A Every force has one and only one 3rd law pair force. Every force has one and only one 3rd law pair force. true false Requ

Scorpion4ik [409]

Answer:

Explanation:

Part A

Every force has one and only pair force , according to 3 rd law

It is true , the pair force has equal magnitude .

Part B

The two forces in each pair act in opposite directions.

It is true .

The pair forces are equal and act in opposite direction .

Part C

The two forces in each pair can either both act on the same body or they can act on different bodies.

It is false .

The two forces in each pair can not act on same body . They act on different bodies , bodies which are undergoing mutual interaction.

4 0

2 years ago