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
devlian [24]
4 years ago
7

Why aren't hydrogen fuel cell cars currently available to the public?

Physics
1 answer:
juin [17]4 years ago
7 0

Red coock

Is amazing.

You might be interested in
In a series circuit, when you add more resistance, what will happen to the amount of current?
zysi [14]
The amount of current will increase since they are inversely proportional
8 0
4 years ago
Read 2 more answers
The average speed and kinetic energy of the particles in a gas are proportional to the measured what of the gas
zysi [14]

Answer: Temperature

Explanation:

8 0
3 years ago
What is the function of a neutral operant?
zlopas [31]
B because it is correct
7 0
3 years ago
Read 2 more answers
The ability to distinguish between acceleration and velocity will be critical to your understanding of many other concepts in th
Sauron [17]

Answer:

Object could only be moving with increasing speed.

Explanation:

Let us consider the general formula of acceleration:

a = (Vf - Vi)/t

Vf = Vi + at   -------- equation 1

where,

Vf = Final Velocity

Vi = Initial Velocity

a = acceleration

t = time

<u>FOR POSITIVE ACCELERATION:</u>

Vf = Vi + at

since, both acceleration and time are positive quantities. Hence, it means that the final velocity of the object shall be greater than the initial velocity of the object.

Vf > Vi

It clearly shows that if an object moves with positive acceleration. <u>It could only be moving with increasing speed.</u>

Solving the same equation for negative acceleration shows that the final velocity will be less than initial velocity and object will be moving with decreasing speed.

And for the constant velocity final and initial velocities are equal and thus, acceleration will be zero.

7 0
3 years ago
Pendulum A has a bob of mass m hung from the string of length L; pendulum B is identical to A except its bob has the length 2L.
GenaCL600 [577]

Answer:

f_{B}: f_{A} = \sqrt{\frac{2}{1}}

Explanation:

For pendulum A: Length = L and gravity = g

The frequency of pendulum A is given by

f = \frac{1}{2\pi }\sqrt{\frac{g}{L}}

Here, f is the frequency, L be the length

f_{A} = \frac{1}{2\pi }\sqrt{\frac{g}{L}}     ... (1)

For pendulum B: Length = 2L, gravity = g

The frequency of pendulum B is given by

f_{B} = \frac{1}{2\pi }\sqrt{\frac{g}{2L}}   .... (2)

Divide equation (1) by (2)

f_{B}: f_{A} = \sqrt{\frac{2}{1}}

5 0
3 years ago
Other questions:
  • 7. Which of the following accurately describes junction diodes? A. In a forward-biased setup, large numbers of charge carriers w
    14·1 answer
  • In answering the following questions, assume that the angular acceleration is constant and nonzero: ??0.
    8·1 answer
  • Which of these elements is unlikely to have a reaction with any element or compound?
    9·1 answer
  • Jen pushed a box for a distance of 80m with 20 N of force. How much work did she do?
    5·2 answers
  • A charge of +Q is fixed in space. A second charge of +q was first placed at a distance r1 away from +Q. Then it was moved along
    6·1 answer
  • If there were no air resistance, how long would it take a free-falling skydiver to fall from a plane at 3000 m to an altitude of
    6·1 answer
  • A test charge of +2μC is placed halfway between a charge of +6μC and another of +4μC separated by 10 cm. (a) What is the magnitu
    5·1 answer
  • Samuel is running in a park’s nature trail. At the first checkpoint, he ran 925 m in 10 minutes. At the second checkpoint, he sl
    14·1 answer
  • Violet light (410 nm) and red light (685 nm) pass through a diffraction grating with d = 3.33 x 10-6 m. What is the angular sepa
    13·1 answer
  • Physics 13
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!