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2 years ago

10

DEFINE UNIFORM AND NON UNIFORM VELOCITY

1 answer:

Inessa05 [86]2 years ago

7 0

Explanation:

Uniform velocity is when an object goes an equal amount of space in an equal amount of time whereas non uniform velocity is when the object covers an unequal amount of distance in an equal amount of time.

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An ideal parallel-plate capacitor consists of a set of two parallel plates of area A separated by a very small distance d. When

sleet_krkn [62]

Answer:

2dQ²/2εA = 2U₀

Explanation:

The energy stored in the ideal parallel plate capacitor U = Q²/2C. For a parallel plate capacitor, C = εA/d where A is the area between the plates and D is the distance between them. So

U = Q²/2C = Q²/2εA/d = dQ²/2εA. At distance d₁ = d, U = U₀,

U₀ = dQ²/2εA,

When d₂ = 2d, U₁ = d₂Q²/2εA = 2dQ²/2εA = 2U₀

3 0

2 years ago

Given a constant acceleration and assuming linear motion, derive equations for velocity and position of a body with respect to t

uysha [10]

Answer:

v = at + u

$x = ut+\frac{1}{2}at^{2}+x_{0}$

Explanation:

acceleration, a = constant

As we know that acceleration is the rate of change of velocity

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

$dv=adt$

integrate on both sides

$\int dv=\int adt$

v = at + u

Where, u is the integrating constant and here it is equal to the initial velocity

Now we know that the rate of change of displacement is called velocity

$v = \frac{dx}{dt}$

$dx=vdt=(u+at) dt$

Integrate on both sides

$\int dx=\int (u+at) dt$

$x = ut+\frac{1}{2}at^{2}+x_{0}$

where, xo is the integrating constant which is initial position of the particle.

8 0

2 years ago

U are asked to measure the amount of liquid held in a sports drink bottle.which is an appropriate unit of measurement? is grams,

saul85 [17]

Milliliters would be used to find the volume AKA amount of liquid

5 0

2 years ago

Will brainlist 20 points

Len [333]

Your answer for this question is the third option.

3 0

1 year ago

Read 2 more answers

8. Three grams of Bismuth-218 decay to 0.375 grams in one hour. What is the half-

Evgen [1.6K]

Answer: 0.333 h

Explanation:

This problem can be solved using the <u>Radioactive Half Life Formula</u>:

$A=A_{o}.2^{\frac{-t}{H}}$ (1)

Where:

$A=0.375 g$ is the final amount of the material

$A_{o}=3 g$ is the initial amount of the material

$t=1 h$ is the time elapsed

$H$ is the half life of the material (the quantity we are asked to find)

Knowing this, let's substitute the values and find $h$ from (1):

$0.375 g=(3 g)2^{\frac{-1h}{H}}$ (2)

$\frac{0.375 g}{3 g}=2^{\frac{-1h}{H}}$ (3)

Applying natural logarithm in both sides:

$ln(\frac{0.375 g}{3 g})=ln(2^{\frac{-1 h}{H}})$ (4)

$-2.079=-\frac{1 h}{H}ln(2)$ (5)

Clearing $H$ :

$H=\frac{-1h}{-2.079}(0.693)$ (6)

Finally:

$h=0.333 h$ This is the half-life of the Bismuth-218 isotope

4 0

2 years ago