All categories

3 years ago

A simple cell is not suitable for daily use why

Physics

2 answers:

pishuonlain [190]3 years ago

5 0

Explanation:

Because the simple cell is not used to produce current for a long time because of the defects like polarization and local action.

V125BC [204]3 years ago

4 0

Answer:

simple cell is not used to produce current for a long time because of the defects like polarization

Explanation:

You might be interested in

Help!!!

snow_lady [41]

Answer:

Explanation:

Hydrant

5 0

3 years ago

A car’s velocity as a function of time is given by Vx (t) = α.t + β.t 2 , where α= 3m/s and β= 0.1m/s 3 . Calculate the average

s344n2d4d5 [400]

The definition of average acceleration allows to find the result for the average acceleration in the given time interval is:

$a_{average}= 1.5 \ \frac{m}{s^2}$

Instantaneous acceleration is defined as the derivative of velocity with respect to time.

a = $\frac{dv}{dt}$

Where a is the acceleration, v the velocity and t the time.

They indicate that the speed of the car is given by the relation.

v = α t + β t²

With α = 3 m / s and β = 0.1 m / s³

Let's make the derivative.

a = α + 2β t

Let's substitute

a = 3 + 2 0.1 t

Average acceleration is the change in velocity in the time interval.

$a_{average} = \frac{\Delta v}{\Delta t }$

Let's find the velocity at the indicated time.

For t = 5 s

v₅ = 3 + 0.1 5²

v₅ = 5.5 m / s

For t = 10 s

v₁₀ = 3 + 0.1 10²

v₁₀ = 13 m / s

Let's calculate the average acceleration.

$a_{average} = \frac{13 - 5.5 }{ 10 - 5 }\\$

$a_{average}= 1.5 \ m/s^2$

In conclusion using the definition of mean acceleration we can find the result for the mean acceleration in the given time interval is:

$a_{average} =$ 1.5 m / s²

Learn more here: brainly.com/question/20057878

7 0

3 years ago

A golfer hits a shot to a green that is elevated 3.20 m above the point where the ball is struck. The ball leaves the club at a

dem82 [27]

Answer:

16.17 m/s

Explanation:

h = 3.2 m

u = 18.1 m/s

Angle of projection, θ = 49°

Let H be the maximum height reached by the ball.

The formula for the maximum height is given by

$H=\frac{u^{2}Sin^{2}\theta }{2g}$

$H=\frac{18.1^{2}\times Sin^{2}49 }{2\times 9.8}=9.52 m$

The vertical distance fall down by the ball, h' H - h = 9.52 - 3.2 = 6.32 m

Let v be the velocity of ball with which it strikes the ground.

Use third equation of motion for vertical direction

$v_{y}^{2}=u_{y}^{2}+2gh'$

here, uy = 0

So,

$v_{y}^{2}=2\times 9.8 \times 6.32$

vy = 11.13 m/s

vx = u Cos 49 = 18.1 x 0.656 = 11.87 m/s

The resultant velocity is given by

$v=\sqrt{v_{x}^{2}+v_{y}^{2}}$

$v=\sqrt{11.87^{2}+11.13^{2}}$

v = 16.27 m/s

7 0

4 years ago

A 30-kg object on Venus weighs 266.1 N. What is the value of gravity on Venus? A. 8.87 m/s2

Marat540 [252]

The weight force on an object in a gravitational field is given by $F = mg$ where $m$ is the mass in kg and $g$ is the acceleration<span> due to gravity at that place. Rearranging:
</span> $g = \frac{F}{m} = \frac{266.1}{30} = 8.87 Nkg^&-1$ or $8.87ms^&-2$
Explanation:

Venus is only slightly smaller than Earth, in both mass and radius, so this answer makes sense, when compared with the value of $9.81 Nkg^&-1$ <span>at Earth's surface.</span>

4 0

3 years ago

The blank of blank is what creates electricity

sveticcg [70]

Answer:

blank plus water is produ-ed in a tunnel and generate the electricity

6 0

3 years ago

A simple cell is not suitable for daily use why​

A simple cell is not suitable for daily use why