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3 years ago

What occurs when an object travels in a curved path

Physics

2 answers:

KengaRu [80]3 years ago

5 0

There must be a centripetal force to move the object move in a curve path.

neonofarm [45]3 years ago

5 0

Answer:

There must be a centripetal force to move the object move in a curve path.

Explanation:

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Two manned satellites approaching one another at a relative speed of 0.150 m/s intend to dock. The first has a mass of 2.50 ✕ 10

Reika [66]

Answer: $u_{1}=-0.075m/s$ and $u_{2}=0.500m/s$

Explanation:

An elastic collision is one in which both the total kinetic energy of the system and the linear momentum are conserved. That is, during the collision there is no sound, heat or permanent deformations in the bodies as a result of the impact.

Now, in the case of the satellites described here, we have:

$m_{1}v_{1}+m_{2}v_{2}=m_{1}u_{1}+m_{2}u_{2}$ (1) Conservation of momentum

$\frac{1}{2}m_{1}v_{1}^{2} +\frac{1}{2}m_{2}v_{2}^{2} =\frac{1}{2}m_{1}u_{1}^{2} +\frac{1}{2}m_{2}u_{2}^{2}$ (2) Conservation of kinetic energy

Where:

$m_{1}=2.5(10)^{3}kg$ is the mass of the first satellite

$m_{2}=7.5(10)^{3}kg$ is the mass of the second satellite

$v_{1}=0.150m/s$ is the initial velocity of the first satellite

$v_{2}=0m/s$ is the initial velocity of the second satellite (we are told it is at rest)

$u_{1}$ is the final relative velocity of the first satellite

$u_{2}$ is the final relative velocity of the second satellite

Now, as we know the second satellite is at rest before the collision, equations (1) and (2) change to:

$m_{1}v_{1}=m_{1}u_{1}+m_{2}u_{2}$ (3)

$\frac{1}{2}m_{1}v_{1}^{2}=\frac{1}{2}m_{1}u_{1}^{2} +\frac{1}{2}m_{2}u_{2}^{2}$ (4)

Solving this system of equations we have the equations for $u_{1}$ and $u_{2}$ :

$u_{1}=\frac{v_{1}(m_{1}-m_{2})}{m_{1}+m_{2}}$ (5)

$u_{2}=\frac{2m_{1}v_{1}}{m_{1}+m_{2}}$ (6)

Substituting the known values on both equations:

$u_{1}=\frac{0.150m/s(2.5(10)^{3}kg-7.5(10)^{3}kg)}{2.5(10)^{3}kg+7.5(10)^{3}kg}$ (7)

$u_{1}=-0.075m/s$ (8) This is the final relative velocity of the first satellite

$u_{2}=\frac{2(2.5(10)^{3}kg)(0.150m/s)}{2.5(10)^{3}kg+7.5(10)^{3}kg}$ (9)

$u_{2}=0.500m/s$ (10) his is the final relative velocity of the second satellite

7 0

4 years ago

1. Why does this traditional folk dance called 'tinikling?

mestny [16]

Answer:

The Tinikling is said to be named after the long-legged bird called the tinikling in the Philippines. Someone who dances the Tinikling imitates the movements of a tinikling bird (hence, tinikling-like) as the bird walks over the grass or dodges bamboo traps set by Filipino farmers on vast rice fields.

7 0

3 years ago

As a box slides down a ramp, friction does 23.0 joules of work. At the bottom of the ramp, the box has 3.8 joules of kinetic ene

tensa zangetsu [6.8K]

Answer:

The high of the ramp is 2.81[m]

Explanation:

This is a problem where it applies energy conservation, that is part of the potential energy as it descends the block is transformed into kinetic energy.

If the bottom of the ramp is taken as a potential energy reference point, this point will have a potential energy value equal to zero.

We can find the mass of the box using the kinetic energy and the speed of the box at the bottom of the ramp.

$E_{k}=0.5*m*v^{2}\\\\where:\\E_{k}=3.8[J]\\v = 2.8[m/s]\\m=\frac{E_{k}}{0.5*v^{2} } \\m=\frac{3.8}{0.5*2.8^{2} } \\m=0.969[kg]$

Now applying the energy conservation theorem which tells us that the initial kinetic energy plus the work done and the potential energy is equal to the final kinetic energy of the body, we propose the following equation.

$E_{p}+W_{f}=E_{k}\\where:\\E_{p}= potential energy [J]\\W_{f}=23[J]\\E_{k}=3.8[J]\\$

And therefore

$m*g*h + W_{f}=3.8\\ 0.969*9.81*h - 23= 3.8\\h = \frac{23+3.8}{0.969*9.81}\\ h = 2.81[m]$

8 0

3 years ago

Describe how sound waves are produced

Delvig [45]

Answer:

Sound waves are produced when something vibrates.

Explanation:

The vibrating body causes the medium (water, air, etc.) Vibrations in air are called traveling longitudinal waves, which we can hear. Sound waves consist of areas of high and low pressure called compressions and rarefactions, respectively.

Sorry if this if wrong

4 0

3 years ago

Power is defined as the ___ is done

aleksandr82 [10.1K]

The answer for the question is D.

3 0

3 years ago

Read 2 more answers