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
monitta
3 years ago
15

Which elements do hydrogen fuel cells combine to produce electricity?

Physics
2 answers:
Fynjy0 [20]3 years ago
7 0

Answer:

Hydrogen and Oxygen i believe

Explanation:

elixir [45]3 years ago
6 0

Answer:

hydrogen and oxygen

Explanation:

You might be interested in
Saturn isn’t the only planet with rings, but they are the most beautiful ones. <br> Fact or Opinion?
Kipish [7]

Answer:

opinion

Explanation:

i could call somthing beautiful ex. a bird but call another bird ugly

7 0
3 years ago
Fan object moves in uniform circular motion in a circle of radius R=200 meters, and the objectes 5.00 seconds to
Leviafan [203]

Answer:

The centripetal acceleration of the object is 31550.72\ m/s^2.  

Explanation:

We have,

Radius of a circular path is 200 m

It takes 5 seconds to complete 10 revolutions. The angular velocity of the object is given by the rate of change of angular displacement per unit time :

\omega=\dfrac{\Delta \theta}{\Delta t}\\\\\omega=\dfrac{2\pi \times 10}{5}\\\\\omega=12.56\ rad/s

The centripetal acceleration of the object is given by :

a=\omega^2 r\\\\a=(12.56)^2 \times 200\\\\a=31550.72\ m/s^2

So, the centripetal acceleration of the object is 31550.72\ m/s^2.

6 0
3 years ago
A wildebeest and chicken participate in a race over a 2.00km long course. the wildebeest travels at a speed of 16.0m/s and chick
Nezavi [6.7K]

Answer:

(a)  The distance of the chicken from the finish line is 62.5 m

(b) The stationary time of the wildebeest is 675 s

Explanation:

Given;

total distance traveled by wildebeest and chicken, d = 2 km = 2000 m

speed of the wildebeest, v_w = 16 m/s

speed of the chicken, v_c = 2.5 m/s

Time for wildebeest to finish the race without stopping, 2000 / 16 = 125 s

Time for chicken to finish the race without stopping, 2000/2.5 = 800 s

(b) for how long in time (in s) was the wildebeest stationary?

t(stationary) = t(chicken) - t(wildebeest)

t = 800s - 125 s

t = 675 s

(a) how far (in m) is the chicken from the Finish Line when the wildebeest resume the race?

The time taken for the wildebeest to run 1.6 km (1600 m) is given by;

t = 1600 / 16 = 100 s

The total time spent by the wildebeest before it resumed the race = stationary time + 100s

t (total) = 675 s + 100 s = 775 s

Distnace traveled by the chicken when the wildebeest resumed the race = 2.5m/s x 775s = 1937.5 m

Thus, the distance of the chicken from the finish line = 2000 m -  1937.5 m

the distance of the chicken from the finish line = 62.5 m

7 0
3 years ago
Please do all of i will give you brainlest and thanks to best answer
vlabodo [156]

Answer:the answer is A

Explanation:

3 0
3 years ago
The use of force to move an object is <br> .
Ne4ueva [31]
The use of force to move an object is called work. This only applies if the object moves.
4 0
3 years ago
Other questions:
  • What is the biggest barrier to the use of renewable energy in the United States?
    5·2 answers
  • A ______ is a tiny packet of energy
    6·1 answer
  • 1 liter= 10 cubic centimeters?
    12·1 answer
  • A 5kg book rests on a table. How much force is it exerting on the table?​
    10·2 answers
  • A cycler leaves home and rides due south for 65 km. She returns home on the same road. What is the cycler's
    15·1 answer
  • A 2,100 kg car is lifted by a pulley. If the cable breaks at 4.50 m, what is the velocity of the car when it hits the ground
    9·1 answer
  • Suppose you have a container filled with iron and sand. You can separate the iron from the sand if you ____________ so this is a
    7·2 answers
  • Which object has the magnetic domains shown in the image?
    13·2 answers
  • Please help me! this is timed!
    15·1 answer
  • The amplitude of the wave in the picture below is... Select one: a. 1 cm b. 1.5 cm c. 2 cm d. 3 cm
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!