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3 years ago

How strong is the electric field between two parallel plates 4.2 mm apart if the potential difference between them is 220 V?

Physics

1 answer:

NISA [10]3 years ago

6 0

Answer:

$2200000 \div 42$

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In a lecture demonstration, a 3.0-m-long vertical string with ten bolts tied to it at equal intervals is dropped from the ceilin

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4 years ago

Why is gravitational acceleration almost always a factor in determining pressure?

Scorpion4ik [409]

Explanation:

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3 years ago

Calculate the ratio of the drag force on a jet flying at 950 km/h at an altitude of 10 km to the drag force on a prop-driven tra

Black_prince [1.1K]

Answer:

$\frac{F_1}{F_2}=3.55$

Explanation:

F = Force

C = Drag coefficient equal for both aircrafts

ρ = Density of air

A = Surface area equal for both aircrafts

v = Velocity

$v_2=\frac{2}{5}v_1$

$F_1=\frac{1}{2}\rho_1 CAv_1^2$

$F_2=\frac{1}{2}\rho_2 CAv_2^2\\\Rightarrow F_2=\frac{1}{2}\rho_2 CA\left(\frac{2}{5}v_1\right)^2$

Dividing the above two equations we get

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The ratio of the drag forces is $\mathbf{\frac{F_1}{F_2}}=\mathbf{3.55}$

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3 years ago

Four spheres with positive and negative charges hang from strings.

Arada [10]

Be because it’s the answer

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3 years ago