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3 years ago

Identify the statement below that is true about a type of stress.

Physics

2 answers:

navik [9.2K]3 years ago

8 0

Answer:

These are my answers hope helps)

1.D

2.B

3.A

Explanation:

Sunny_sXe [5.5K]3 years ago

6 0

1-D Eustress is a positive response

2-B resistance

3-A Imagine you are doing your gymnastics

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On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The free-f

Sati [7]

On the moon, the gravitational acceleration is 1/6 of 9.8 m/s², so
g = 9.8/6 = 1.633 m/s²

Launch speed = 35 m/s
Launch angle = 27° above the horizontal.
Therefore,
The horizontal velocity is
u = 35*cos(27) = 31.1852 m/s
The vertical launch velocity is
v = 35*sin(27) = 15.8897 m/s

Part A
When the ball reaches maximum height, the time requires is given by
0 = v - gt
t = v/g = 15.8897/1.6333 = 9.7286 s
This is one half of the time of flight, which is
2*9.7286 = 19.457 s

Answer: 19.46 s (2 sig. figs)

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4 years ago

A speed skater goes around a turn with a 31 m radius. The skater has a speed of 14 m/s and experiences a centripetal force of 46

dybincka [34]

Answer:

Mass of the skater, m = 72.75 kg

Explanation:

It is given that,

Radius of the circular path, r = 31 m

Speed of the skater, v = 14 m/s

Centripetal force, F = 460 N

We need to find the mass of the skater. It can be determined using the formula of centripetal force. It is given by :

$F=\dfrac{mv^2}{r}$

$m=\dfrac{Fr}{v^2}$

$m=\dfrac{460\ N\times 31\ m}{(14\ m/s)^2}$

m = 72.75 kg

So, the mass of the skater is 72.75 kg. Hence, this is the required solution.

4 0

4 years ago

A battery charger is connected to a dead battery and delivers a current of 3.5 a for 4 hours, keeping the voltage across the bat

oksano4ka [1.4K]

The power delivered is equal to the product between the voltage V and the current I:
$P=VI=(16 V)(3.5 A)=56 W$

This power is delivered for a total time of $t=4h=4 \cdot 3600 s = 14400 s$ , so the total energy delivered to the battery is
$E=Pt = (56 W)(14400 s)=806400 J=806.4 kJ$

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3 years ago

The larger the radius of a wheel in comparison to the radius of its axle, the _______ the mechanical advantage will be.

evablogger [386]

The answer is greater

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3 years ago

How are scientists able to measure the age of earth?

RoseWind [281]

Explanation:

Through the uranium-lead dating, you can establish the age of rocks that formed from 1 million years ago to 4.5 billion years with enough precision. Dating meteorites using this method, It is possible to establish the age of the earth, since these are pieces that are present since the formation of the solar system, so they are approximately the same age as the Earth.

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3 years ago