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4 years ago

A student is sitting in a moving car. Through the car's window, the student sees a traffic

Physics

1 answer:

anygoal [31]4 years ago

6 0

Answer:

I believe it would be the first one "The student is moving relative to the cars window bunt not to the traffic light".

Explanation:

be cause he would be in the car so he would be moving with the car

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Analysis of the relationship between the fuel economy (mpg) and engine size (liters) for 35 models of cars produces the regres

kvasek [131]

Answer:

Gas mileage is 17.29

Explanation:

Given data:

The total number of the model is 35

The total size of the engine is 5 ltr

The regression model is given as

$36.44 - 3.829\times engine\ size$

From the information given in question we have

Regression equation is : model- mpg $= 36.44 - 3.829\times engine\ size$

Therefore for engine capacity of 5 liters;

Gas mileage $= 36.44 - 3.829\times 5 = 17.29$

Gas mileage is 17.29

8 0

3 years ago

The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of th

sertanlavr [38]

Answer:

The force exerted by the biceps is 143.8 kgf.

Explanation:

To calculate the force exerted by the biceps, we calculate the momentum in the elbow.

This momentum has to be zero so that her forearm remains motionless.

Being:

W: mass weight (6.15 kg)

d_W= distance to the mass weight (0.425 m)

A: weight of the forearm (2.25 kg)

d_A: distance to the center of mass of the forearm (0.425/2=0.2125 m)

H: force exerted by the biceps

d_H: distance to the point of connection of the biceps (0.0215 m)

The momemtum is:

$H*d_H-A*d_A-W*d_W=0\\\\H=(A*d_A+W*d_W)/d_H\\\\H=(2.25*0.2125+6.15*0.425)/0.0215\\\\H=(0.478125+2.61375)/0.0215\\\\H=3.091875/0.0215=143.8$

The force exerted by the biceps is 143.8 kgf.

8 0

4 years ago

Marca las siguientes afirmaciones con V o F (verdadero o falso) y luego justifica aquellas que consideras falsas:

Harlamova29_29 [7]

Answer:

answer is

Explanation:

I need points

6 0

3 years ago

Which of these hormones regulate calcium levels in the body

Arada [10]

Metabolism........I think

8 0

3 years ago

Rubbing two objects together may cause large number of electrons to be transferred from one object to the other. True or False

ahrayia [7]

Answer:

Rubbing two objects together may cause large number of electrons to be transferred from one object to the other. True or False.

Answer is True.

Explanation:

When we Rub two different objects, the contact area increases or we can say friction increases. In response of rubbing two materials there is a transfer of electrons from one material to the other material. This causes one subject to become positively charged ( Electron loser) and the other object become negatively charged ( Electron gainer ) This is also called Triboelectric Charging.

Now If contact area of two different rubbing objects will be larger, Friction will be larger , the larger number of electrons would be transferred from one object to other.

8 0

3 years ago