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4 years ago

Can anyone help me answer this Grade 8 Science question soon as possible?

Physics

2 answers:

omeli [17]4 years ago

8 0

Which ramp is going to make the ball travel down faster?
The 2nd ramp because it is steeper and would give the ball a faster push caused by gravity than the 1st ramp.

Finger [1]4 years ago

5 0

Which ramp would make the ball go down faster?

If we use the ramp at the top, then it will go down faster because the other ramp would cause friction because of the way it slopes down, along with the variable of gravity.

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How does the kinetic theory explain how you can smell coffee and bacon at thrm?

maksim [4K]

"• Diffusion - coffee and bacon particles are floating around
• They do not interact/blend with each other
• Because of fluidity, the particles are gliding past each other and filling the open space within the nose."

6 0

4 years ago

The chain reaction used in nuclear power plants involves a free _______ colliding with a _______ , forming more free neutrons an

sertanlavr [38]

-- Free neutrons collide with Uranium nuclei.

If one is absorbed, then

-- the Uranium nucleus falls apart,

producing

-- smaller nuclei,
-- energy,

and

-- more free neutrons.

7 0

3 years ago

Read 2 more answers

Las carreras de velocidad pura en el atletismo son:

zheka24 [161]

La respuesta es la letra b

8 0

3 years ago

There is a potential difference of 1.1 V between the ends of a 10 cm long graphite rod that has a cross-sectional area of 0.90 m

Serga [27]

Explanation:

It is given that,

Potential difference between the ends of a rod, V = 1.1 V

Length of the rod, l = 10 cm = 0.1 m

Area of cross section of the rod, $A=0.9\ mm^2=9\times 10^{-7}\ m^2$

The resistivity of graphite, $\rho=7.5\times 10^{-6}\ \Omega-m$

(a) Let R is the resistance of the rod. It is given by :

$R=\rho \dfrac{l}{A}$

$R=7.5\times 10^{-6}\times \dfrac{0.1}{9\times 10^{-7}}$

$R=0.833\ \Omega$

So, the resistance of the rod is 0.833 ohms.

(b) Let I is the current flowing in the wire. It can be calculated using the Ohm's law as :

$I=\dfrac{V}{R}$

$I=\dfrac{1.1\ V}{0.833\ \Omega}$

I = 1.32 A

(c) Let E is the electric field inside the rod. The electric field in terms of potential difference is given by :

$E=\dfrac{V}{l}$

$E=\dfrac{1.1\ V}{0.1\ m}$

E = 11 V/m

Hence, this is the required solution.

8 0

3 years ago

What is your wheel and axle

Crank

Answer:

Pls mark me brainliest

Explanation:

The wheel and axle is a simple machine consisting of a wheel attached to a smaller axle so that these two parts rotate together in which a force is transferred from one to the other.

8 0

3 years ago

Read 2 more answers