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4 years ago

How does making a model help scientist observe?? HELPP PLEASEEE

Physics

1 answer:

coldgirl [10]4 years ago

8 0

Making a model helps the scientists have a better example or view of what they are working with

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A long board is free to slide on a sheet of frictionless ice. As shown in the top view in the diagram, a skater skates to the bo

Ede4ka [16]

Answer:

A) rational kinetic energy is conserved

5 0

3 years ago

On a straight road (taken to be in the x direction) you drive for an hour at 60 km per hour, then quickly speed up to 120 km per

Luda [366]

Answer:

The average velocity is 180 km/hr

Explanation:

Given;

initial velocity, u = 60 km per hour

final velocity, v = 120 km per hour

initial time = 1 hour

final time = 2 hour

Initial position = 60 km/h x 1 hour = 60 km

final position = 120 km/h x 2 hour = 240 km

The average velocity is given by;

$V_{avg} = \frac{Final \ position\ - \ Initial \ position}{final \ time\ - \ initial \ time}\\\\V_{avg} = \frac{240km \ - \ 60km}{2hr\ - \ 1hr} \\\\V_{avg} = \frac{180 \ km}{1hr} \\\\V_{avg}= 180 \ km/hr$

Therefore, the average velocity is 180 km/hr

3 0

3 years ago

Any help is appreciated

sdas [7]

image distance,di=10 cm

object distance,do=20cm

magnification, m=di/do

=10/20

=0.5

since the image is virtual, magnification is negative.

therefore m=-0.5

8 0

3 years ago

A student sets a board to pivot about its center. The student then places a box with mass m at some position r from the pivot po

kvv77 [185]

Answer:

The box should be placed at a distance of $\frac{r}{2}$ from the pivot

Explanation:

In order to be in static equilibrium, both Torques have to be the same magnitude, so:

$T_{m} = T_{2m}$ Replacing the formula for Torque:

$m*r = 2m*X$ where X is the distance we need to find.

Solving for X we get:

$X = \frac{r}{2}$

As we can see, the distance does not depend on the actual value of the mass but on the fact of one being twice as much as the other one.

7 0

4 years ago

The term that describes the direction closest to the point of origin is:

andreyandreev [35.5K]

The term that describes the direction closest to the point of origin is Proximal. Dorsal is the directional term for the movement toward the back of the body. Cephalic is the term that describes the movement towards the top of the body. Ventral on the other hand describes the movement toward the front of the body.

3 0

3 years ago