Ask question

Ask question

All categories

3 years ago

14

One day, five- year old barbara was running down the street. As she opened the gate to her friends yard, a big dog jumped out an

d bite her. She was terribly startled and cried out in pain. She now cries whenever she sees any dog

1 answer:

KatRina [158]3 years ago

7 0

Answer:

instinct

Explanation:

You might be interested in

A concrete piling of 50 kg is suspended from a steel wire of diameter 1.0 mm and length 11.2 m. How much will the wire stretch?

pentagon [3]

Explanation:

It is given that,

Mass of concrete pilling, m = 50 kg

Diameter of wire, d = 1 mm

Radius of wire, r = 0.0005 m

Length of wire, L = 11.2

Young modulus of steel, $Y=20\times 10^{10}\ N/m^2$

The young modulus of a wire is given by :

$Y=\dfrac{\dfrac{F}{A}}{\dfrac{\Delta L}{L}}$

$Y=\dfrac{F.L}{A\Delta L}$

$\Delta L=\dfrac{F.L}{A.Y}$

$\Delta L=\dfrac{50\ kg\times 9.8\ m/s^2\times 11.2\ m}{\pi (0.0005\ m)^2\times 20\times 10^{10}\ N/m^2}$

$\Delta L=0.034\ m$

So, the wire will stretch 0.034 meters. Hence, this is the required solution.

8 0

4 years ago

The net force of an object is

Inessa05 [86]

Answer:

the sum of all forces acting on an object.

Explanation:

7 0

4 years ago

Read 2 more answers

SOMEONE HELP ME PLEASE

mihalych1998 [28]

Explanation:

By the second law of Newton we get the relation

F = ma

5 0

3 years ago

Read 2 more answers

frez [133]

B 20 m/s
It should go to 100 that fast nor 40

4 0

3 years ago

A body travels 80 meters in 8 seconds <br> at a steady speed calculate it's average speed<br>

iVinArrow [24]

Explanation:

avg spd = total distance/total time

=80/8=10m/s

7 0

4 years ago