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zzz [600]
3 years ago
11

Al llegar a detenerse, un automóvil deja marcas de derrape de 92m de largo sobre una autopista. Si se supone una desaceleración

de 7 m/s, estime la rapidez del automóvil justo antes de frenar
Physics
1 answer:
True [87]3 years ago
4 0

Answer:

Explanation: no se español

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If a cell phone is dropped from a very tall building, how far has the phone fallen after 2.7 seconds, neglecting air resistance?
Zielflug [23.3K]
The free fall of the phone is an uniformly accelerated motion toward the ground, with constant acceleration equal to
g=9.81 m/s^2

So, assuming the downward direction as positive direction of the motion, since the phone starts from rest the distance covered by the phone after a time t is given by
y(t) =  \frac{1}{2}gt^2
And if we substitute t=2.7 s, we find the distance covered:
y(t)=  \frac{1}{2}(9.81 m/s^2)(2.7 s)^2=35.8 m
6 0
3 years ago
The resistance of a component can be found by measuring the potential difference across it and the __________ that travelled thr
elena-14-01-66 [18.8K]

Answer:

polarity completes the sentence

7 0
3 years ago
Imagine that you are an industrial worker in a city in China. What would you put in an e-mail to a relative in the United States
Mumz [18]

In that email, I will tell my relative in the United states that the transition to capitalism now implies that we work for longer hours with less pay.

<h3>What is capitalism?</h3>

The term capitalism means a system in which the means of production is controlled by individuals rather than by the state. Hence, monopoly is possible in a capitalist economy.

In that email, I will tell my relative in the United states that the transition to capitalism now implies that we work for longer hours with less pay and we do not have the social and job security that was once guaranteed in a socialist/communist economy.

Learn more about capitalism:brainly.com/question/679709

4 0
3 years ago
If a tank contains water 4 m deep, what is the pressure at the bottom of the tank? (Neglect the atmospheric pressure.)
makkiz [27]

Given:

Water 4 m deep

Required:

Pressure at the bottom of the tank

Solution:

p2 – p1 = gh

p2 – p1 = p = gh

p = gh = 1000kg/m3 (9.8m/s2)(4m)

<span>p = 39200 Pa</span>

6 0
4 years ago
A road with a radius of 75.0 m is banked so that a car can navigate the curve at a speed of 15.5 m/s without any friction. When
kirza4 [7]

Answer: 0.683

Explanation: The relationship between a car moving along a curve and the frictional force is given below as

us×g = v²/r

Where us = coefficient of static friction =?, g = acceleration due to gravity = 9.8 m/s², v = 22.4 m/s and r = 75m

By substituting the parameters, we have that

us×9.8 = 22.4²/ 75

us ×9.8 = 501.76/75

us ×9.8 = 6.690

us = 6.690/9.8 = 0.683

8 0
3 years ago
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