All categories

3 years ago

PLEASE HELP ME!!!

2 answers:

8 0

1) Because you have a lower chance of getting electrocuted, 2) 1.DON'T plug a bunch of stuff into one outlet or extension cord, 2.Make sure all electric cords are tucked away neatly, 3.DON'T ever climb the fence around an electrical substation, 4.DON'T yank an electrical cord from the wall, 5.Keep electrical stuff far away from water, 6.Ask a grown-up for help. 3) Always determine if there is power to a circuit or wire using a voltmeter. Never touch any part of a circuit if you did not verify yourself that the the power is off(disconnected). { Trust but verify :President R. Reagan} Having turned off or disconnected the power assure that it cannot be accidentally turned on again by another person. Your Welcome.

Vladimir79 [104]3 years ago

6 0

1. Why it is important to practice good safety procedures around electricity
To stay away from any dangers that will cause you probably to death.

2.At least 6 tips for electricity safety

1. DON'T plug a bunch of stuff into one outlet or extension cord.
2. DO ask grown-ups to put safety caps on all unused electrical outlets.
3. DO make sure all electric cords are tucked away, neat and tidy.
 4. DON'T ever climb the fence around an electrical substation.
5. keep electrical stuff far away from water.
6. DO ask a grown-up for help when you need to use something that uses electricity.
7. DO look up and look out for power lines before you climb a tree.

You might be interested in

Block A, with mass mA, is initially at rest on a horizontal floor. Block B, with mass mB, is initially at rest on the horizontal

nexus9112 [7]

Answer:

(E) μs(mA +mB)g

Explanation:

We can apply for mB:

∑ Fx = mB*a (→)

⇒ Ffriction = mB*a ⇒ a = Ffriction / mB = μs*N / mB

⇒ a = μs*(mB*g) / mB ⇒ a = μs*g (acceleration of the system)

Now, for mA we have

∑ Fx = mA*a (→)

F - Ffriction = mA*a ⇒ F = mA*a + Ffriction

⇒ F = mA*(μs*g) + μs*(mB*g) ⇒ F = μs*g*(mA + mB)

We must know that the friction acts only between the two blocks

8 0

3 years ago

In an attempt to impress its friends, an acrobatic beetle runs and jumps off the bottom step of a flight of stairs. The step is

Aleks04 [339]

Answer:

0.3677181864 m

Explanation:

u = Velocity = 1.5 m/s

$\theta$ = Angle = 20°

y = -20 cm

Velocity components

$u_x=ucos\theta\\\Rightarrow u_x=1.5cos20\\\Rightarrow u_x=1.40953\ m/s$

$u_y=usin\theta\\\Rightarrow u_y=1.5sin20\\\Rightarrow u_y=0.51303\ m/s$

Acceleration components

$a_x=0$

$a_y=-9.81\ m/s^2$

$y=u_yt+\dfrac{1}{2}a_yt^2\\\Rightarrow -0.2=0.51303\times t+\dfrac{1}{2}\times -9.81t^2\\\Rightarrow 4.905t^2-0.51303t-0.2=0$

$t=\frac{-\left(-0.51303\right)+\sqrt{\left(-0.51303\right)^2-4\cdot \:4.905\left(-0.2\right)}}{2\cdot \:4.905}, \frac{-\left(-0.51303\right)-\sqrt{\left(-0.51303\right)^2-4\cdot \:4.905\left(-0.2\right)}}{2\cdot \:4.905}\\\Rightarrow t=0.26088, -0.15629$

Time taken is 0.26088 seconds

$x=u_xt+\dfrac{1}{2}a_xt^2\\\Rightarrow x=1.40953\times 0.26088\\\Rightarrow x=0.3677181864\ m$

The distance the beetle travels on the ground is 0.3677181864 m

6 0

3 years ago

Two of the three tuning forks have known frequencies. When a 510 Hz. fork and the unknown fork are struck together, four beats p

Vikki [24]

4 Hz is the difference between 510 and the unknown.
Therefore the unknown is either 514 or 506. 

If 505 and 506 were struck together, the diff would be 1 Hz 
If 505 and 514 were struck toghether, the diff would be 9 Hz which would be difficult to count accurately, 

Therefore the unknown is 514

3 0

3 years ago

Which two statements about composite materials are true?

Lostsunrise [7]

Answer:

Here down below is 3 things true about composite materials

Explanation:

-They’re made up of more than one substance.

-They have the same or similar properties as the materials used to make them.

-They’re always made of metal.

-They’re readily available in nature.

4 0

3 years ago

When can a truck have less momentum than a bike? A. only when the truck is not moving B. only when it's moving faster than the b

3241004551 [841]

Answer:

Explanation:

It is the answer I think let me know

4 0

3 years ago