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cestrela7 [59]
3 years ago
6

True or false Lightning happens because of the release of static electricity.

Physics
2 answers:
Shtirlitz [24]3 years ago
4 0
Question: True or False
Lightning happens because of the release of static electricity.

Answer: True
SOVA2 [1]3 years ago
3 0
Yes it is true , lightning happens because of the release of static electricity
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Frequency, period and wavelength<br> 11th grade high school physics
zzz [600]

Answer:0.38

Explanation:

the formula is f = c / λ

so f= 2.5/6.5

and that equals 0.38 46 and so on so i just rounded it

6 0
3 years ago
During an auto accident, the vehicle’s air bags deploy and slow down the passengers more gently than if they had hit the windshi
Allushta [10]

Answer:

d = 0.38 m

Explanation:

As we know that the person due to the airbag action, comes to a complete stop, in 36 msec or less, and during this time, is decelerated at a constant rate of 60 g, we can find the initial velocity (when airbag starts to work), as follows:

vf = v₀ -a*t  

If vf = 0, we can solve for v₀:

v₀ = a*t = 60*9.8 m/s²*36*10⁻³s = 21.2 m/s

With the values of v₀, a and t, we can find Δx, applying any kinematic equation that relates all of some of these parameters with the displacement.

Just for simplicity, we can use the following equation:

vf^{2} -vo^{2} = 2*a*d

where vf=0, v₀ =21.2 m/s and a= -588 m/s².

Solving for  d:

d = \frac{-vo^{2}}{2*a} = \frac{(21.2m/s)^{2} }{2*588 m/s2} =0.38 m

⇒ d = 0.38 m

5 0
3 years ago
Read 2 more answers
An auto race takes place on a circular track. A car completes one lap in a time of 18.0 s, with an average tangential speed of 4
eduard

Answer:

(A) 0.3488 rad/sec

(B) 124.246 m                

Explanation:

We have given car completes one revolution in 18 sec'

So time period T= 18 sec

Tangential speed v = 43.4 m/sec

(A) Angular velocity is given by \omega =\frac{2\pi }{T}=\frac{2\times 3.14}{18}=0.3488rad/sec

(B) Tangential velocity is given v = 43.4 m /sec

We know that v=\omega r

r=\frac{v}{\omega }=\frac{43.4}{0.3488}=124.426m

4 0
3 years ago
A car traveling at 3.6 m/s accelerates at the rate of 0.71 m/s2 for an interval of 4.4 s. Find vf. Incorrect: Your answer is inc
alexandr1967 [171]

Answer:

vf = 6.724 m/s

Explanation:

Velocity: This an be defined as the rate of change of displacement. Velocity is a vector quantity, because it can be represented both in magnitude and direction. The S.I unit of velocity is m/s.

From newton's equation of motion,

vf = vi + at ......................................... Equation 1

Where vf = final velocity, vi = initial velocity, a = acceleration, t = time.

Given: vi = 3.6 m/s, a = 0.71 m/s²,  t = 4.4 s.

Substitute into equation 1

vf = 3.6+0.71(4.4)

vf = 3.6+3.124

vf = 6.724 m/s

Hence, vf = 6.724 m/s

8 0
3 years ago
A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per seco
yanalaym [24]

Answer:

(2) 10.0 m/s east

Explanation:

7 0
3 years ago
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