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
Law Incorporation [45]
3 years ago
15

Which simple experiment could be conducted to show an example of how lightning is created? A) Rub a balloon so it picks up extra

electrons from the sweater or your hair and becomes slightly negatively charged. B) Rub a balloon filled with air on a wool sweater or on your hair. Then hold it up to a wall. C) Connect the positive pole of an electrical source to the negative pole, so you create a circuit. D) Walk across a carpet, shuffling your feet and touching something made of metal.
Physics
1 answer:
alexandr1967 [171]3 years ago
7 0

I think the answer is d

You might be interested in
Scrie un eseu la tema:,,Rolul cîmpului magnetic al Pămîntului asupra omenirii
Savatey [412]

Answer:

AREN'T

URGENT

NO

WHY

Explanation:

WHY

5 0
3 years ago
Balancing Chemical Equations
finlep [7]

1.   2 C2H6 + 7 O2 = 6 H2O + 4 CO2

8 0
3 years ago
Read 2 more answers
A robotic arm lifts a stack of cafeteria trays weighing 62 newtons (N). It moves the trays 2 meters (m). How much work has the r
tigry1 [53]

work done = force * distance

work = 62 * 2 = 124 j

7 0
3 years ago
What distance will a vehicle travel before coming to a complete stop from a speed of 70 mph, (a) When the vehicle is traveling o
OLga [1]

Answer:

(a), The SSD will be 723.9 ft.

(b-1), The SSD will be 620.2 ft.

(b-2), The SSD will be 723.91>SSD>620.2

(c), The SSD will be 910.5 ft.

Explanation:

Given that,

Speed = 70 mph

Suppose, a perception reaction time of 2.5 sec and the coefficient of friction is 0.35

We need to calculate the stopping sight distance

Using formula of SSD

SSD=1.47\times v\times t+\dfrac{v^2}{30\times(f\pm g)}

Where, v = speed of vehicle

t = perception reaction time

f = coefficient of friction

g = gradient of road

(a). If the gradient of road is zero.

Then, the stopping sight distance will be

SSD=1.47\times 70\times 2.5+\dfrac{70^2}{30\times(0.35)}

SSD=723.9\ ft

(b-1). If the gradient of road is 0.1

Then, the stopping sight distance will be

SSD=1.47\times 70\times 2.5+\dfrac{70^2}{30\times(0.35+0.1)}

SSD=620.2\ ft

(b-2). If the grade continuously decrease then the SSD will be increase.

But if the grade is increase then the SSD will be decrease and for flat grade the SSD will be more.

So, The SSD will be 723.91>SSD>620.2

(c). When the vehicle is traveling downhill on a roadway of constant grade then the vehicle take will be more SSD

So, The SSD will be

SSD=1.47\times 70\times 2.5+\dfrac{70^2}{30\times(0.35-0.1)}

SSD=910.5\ ft

Hence, (a), The SSD will be 723.9 ft.

(b-1), The SSD will be 620.2 ft.

(b-2), The SSD will be 723.91>SSD>620.2

(c), The SSD will be 910.5 ft.

7 0
3 years ago
Which statements are true about the periodic table apex
TiliK225 [7]
Can be numbered in 2 different ways, one box represents one element, and organized by atomic number
7 0
3 years ago
Other questions:
  • At the instant that the velocity of the crate is v⃗ =(3.40m/s)ι^+(2.20m/s)j^, what is the instantaneous power supplied by this f
    7·1 answer
  • What adaptation in frogs enables them to swim​
    13·2 answers
  • An apple is placed 20.0 cm in front of a diverging lens of focal length 10.0 cm. Find the image distance and the magnification o
    11·1 answer
  • A bowling ball has a mass of 6 kg. What happens to its momentum when its speed increases from 2 m/s to 4 m/s?
    8·2 answers
  • The atomic mass of carbon-13 is 13. It has six protons. How many neutrons does this isotope have? 6 7 13 19
    6·1 answer
  • 2 Points
    13·2 answers
  • What causes moon phases, rotation or revolution
    7·1 answer
  • Pls give me an example of newton's 1 ,2 ,3 law of motion pls this is due tomorrow
    7·1 answer
  • A cell membrane consists of an inner and outer wall separated by a distance of approximately 10 nm. Assume that the walls act li
    13·1 answer
  • If a swimmer is swimming 200m at 4 m/s how long would it take them to complete the race
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!