3 years ago

Identify the two pieces of information you need to know the velocity of an object.

1 answer:

8 0

To determine the velocity of an object, you would need to know it's magnitude and direction, because velocity is the speed is a certain direction. <span />

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Marta_Voda [28]

I think the answer is to measure the tubes

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3 years ago

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Two 10-N weights are hanging from two Springs A and B. Spring A has a greater spring constant and therefore will ____. a. have a

arsen [322]

The spring should have a greater displacement .
Greater spring constant = the more difficult it is to stretch a spring , due to stiffness.

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1 year ago

A locomotive is pulling 8 freight cars, each of which is loaded with the same amount of weight. The mass of each freight car (wi

nikitadnepr [17]

Answer:106560 N

Explanation:

Given

Let Tension between 2 and 3 car be $T_{23}$ and between 3 &4 is $T_{34}$

$T_{23}-T_{34}=ma$

mass of freight car =37,000 kg

acceleration of car $=0.48 m/s^2$

$T_{34}$ is accelerating all freights behind 3

therefore

$T_{34}=5\times ma$

$T_{34}=5\times 37000\times 0.48=88,800 N$

Thus

$T_{23}=T_{34}+ma$

$T_{23}=88,800+37000\times 0.48=88,800+17,760=106560 N$

4 0

3 years ago

An exoplanetary system has two known planets. Planet X orbits in 290 days and Planet Y orbits in 145 days. Which planet is close

satela [25.4K]

Answer:

Planet Y

Rx = 1.587 Ry

Explanation:

Tx = 290 days

Ty = 145 days

Let the semi major axis of planet X is Rx and of plant Y is Ry.

According to the Kepler's third law of planetary motion

$\frac{T_{x}^{2}}{T_{y}^{2}}=\frac{R_{x}^{3}}{R_{y}^{3}}$

$\frac{290^{2}}{145^{2}}=\frac{R_{x}^{3}}{R_{y}^{3}}$

$4=\frac{R_{x}^{3}}{R_{y}^{3}}$

$1.587=\frac{R_{x}}{R_{y}}$

Rx = 1.587 Ry

So, planet Y is closest to star.

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3 years ago

Helppp please the choices for all three of them are condensation, deposition or freezing

Talja [164]

Answer:

c-freezing b condensation a deposition

Explanation:

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3 years ago