1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
omeli [17]
3 years ago
6

Which of the following are NOT two of the best ways to StaySafe around electricity?

Physics
1 answer:
creativ13 [48]3 years ago
3 0

1) Sleeping with an electronic in charge right next to you.

2) Leaving a charger plugged in all the time especially near liquid substances.

You might be interested in
A driver drives for 30.0 minutes at 80.0 km/h, then 45.0 minutes at 100 km/h. She then stops 30 minutes for lunch. She then trav
bija089 [108]

Answer:

b) 68,9 km/h a) picture

Explanation:

In this problem, since velocity is expressed in km/h and time in minutes, we have to convert either time to hours or velocity to km/min. It is easier to use hours.

Using this formula we pass time to hours:

t_{hours}=t_{min}*\frac{1 h}{60 min}\\30min*\frac{1 h}{60 min}=0,5h\\45min*\frac{1 h}{60 min}=0,75h

Now we can plot speed vs time (image 1). The problem says that the driver uses constant speed, so all lines have to be horizontal.

Using the values of the speed we calculate the distance in each interval

d=v*t\\80km/h*0.5h=40km\\100km/h*0.75h=75km

Using these values and the fact that she was having lunch in the third one (therefore stayed in the same position), we plot position vs time, using initial position zero (image 2, distance is in km, not meters).

Finally, we compute the average speed with the distance over time:

v_{average}=\frac{155km}{2.25h}=68.9km/h

6 0
3 years ago
Which of the following is NOT a characteristic of a state?
Free_Kalibri [48]
There are four characteristics of a state. population,government,sovereignty,and territory. 
7 0
3 years ago
Read 2 more answers
A ball is thrown straight up from the ground with an unknown velocity. It reaches its highest point after 5.5 s. With what veloc
Maslowich
V = u + at
0 = u -9.8 x 5.5
u = 9.8 x 5.5 = 53.9 m/s
5 0
3 years ago
Andrew skis down a hill.
IceJOKER [234]

Explanation:

gravitational potential energy at the top of the hill, which transforms into kinetic energy as he moves bottom of the hill

that's mean potential energy transfoms into kinetic energy

5 0
3 years ago
The density of aluminum is 2.7 × 103 kg/m3 . the speed of longitudinal waves in an aluminum rod is measured to be 5.1 × 103 m/s.
andrey2020 [161]
<span>The speed of longitudinal waves, S, in a thin rod = âšYoung modulus / density , where Y is in N/m^2. So, S = âšYoung modulus/ density. Squaring both sides, we have, S^2 = Young Modulus/ density. So, Young Modulus = S^2 * density; where S is the speed of the longitudinal wave. Then Substiting into the eqn we have (5.1 *10^3)^2 * 2.7 * 10^3 = 26.01 * 10^6 * 2.7 *10^6 = 26.01 * 2.7 * 10^ (6+3) = 70.227 * 10 ^9</span>
5 0
3 years ago
Other questions:
  • How far from a -7.80 μC point charge must a 2.40 μC point charge be placed in order for the electric potential energy of the pai
    7·1 answer
  • A small plastic bead has been charged to -14 nC .
    13·1 answer
  • An elevator of massmis initially at rest onthe first floor of a building. It moves upward,and passes the second and third floors
    6·1 answer
  • Which describes why the sun is a renewable resource? The sun creates biomass. The sun is continuously releasing energy. The sun
    7·1 answer
  • Determine the maximum voltage that can be applied to a Teflon-filled parallel-plate capacitor having a plate area of 180 cm2 and
    8·2 answers
  • The width of a particular microwave oven is exactly right to support a standing-wave mode. Measurements of the temperature acros
    10·1 answer
  • A 1460-kg submarine rises straight up towards the surface. Seawater exerts both an upward buoyant force of 16670 N on the submar
    9·1 answer
  • When ionic bonds form compound structures in a solid state, they arrange in latticed, crystalline patterns.
    15·1 answer
  • It turns out that the depth in the ocean to which airborne electromagnetic signals can be detected grows with the wavelength. Th
    6·1 answer
  • True or false: a light source can emit more than one light ?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!