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3 years ago

At what point on the position-time graph shown is the object's instantaneous velocity smallest?

Physics

1 answer:

ipn [44]3 years ago

6 0

D because it isn’t moving for a sec so I think D

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The element magnesium has 2 valence electrons. What is the most likely charge on a magnesium ion?

RSB [31]

The charge is 2+

good luck

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3 years ago

A dumbbell-shaped object is composed by two equal masses, m, connected by a rod of negligible mass and length r. If I1 is the mo

Sati [7]

Answer:

The correct answer to the following question will be Option A (I1 > I2).

Explanation:

Method for moment of inertia because of it's viewpoint including object at a mean distance "r" from the axis is,

⇒ mr²

For Case 1:

Let the length of a rod be "r".

The axis passes via the middle of that same rod so that the range from either the axis within each dumbbell becomes " $\frac{r}{2}$ ".

Now,

Now total moment of inertia = sum of inertial moment due to all of the dumbbell

⇒ $l1=m(\frac{r}{2})^2+m(\frac{r}{2})^2$

⇒ $\frac{mr^2}{2}$

For Case 2:

Axis moves via one dumbbell because its range from either the axis becomes zero (0) and its impact is zero only at inertia as well as other dumbbell seems to be at a range "r" from either the axis

Now,

Total moment of inertia = moment of inertia of dumbbell at distance "r".

$l2=mr^2$

And now we can infer from this one,

⇒ $mr^2>\frac{mr^2}{2}$

So that "I1 > I2" is the right answer.

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4 years ago

Why can protons not be rubbed off one material and transferred to the other?

Pani-rosa [81]

I think it is that protons are stuck with the neutrons in a strong force that is in the nucleus

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3 years ago

In this ecosystem, squirrels find and eat acorns from trees. What would happen to the balance of the ecosystem if populations of

Marizza181 [45]

Answer

The answer would be B.

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4 years ago

Can someone help explain work and power and how it works

adoni [48]

In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. For example, when a ball is held above the ground and then dropped, the work done on the ball as it falls is equal to the weight of the ball (a force) multiplied by the distance to the ground (a displacement).
power= work over time
the more power you put into your work the less time it will take, if you have less power the more time

4 0

3 years ago

Read 2 more answers