2 years ago

When the area of block increases for constant force, the

Physics

2 answers:

Lemur [1.5K]2 years ago

7 0

Answer: B

adding force will add accesion

mariarad [96]2 years ago

7 0

Answer:

Decreases

Explanation:

Pressure = Force/Area

As Area increases, Pressure decreases because, Pressure is inversely proportional to Area.

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the electrical resistance of copper wire varies directly with its length and inversely with the square of the diameter of the wi

leonid [27]

Answer:24.47

Explanation:

Given

$L_1=30 m$

$d_1=3 mm$

$R_1=25 \Omega$

$L_2=40 m$

$d_2=3.5 mm$

we know Resistance $R=\frac{\rho L}{A}$

Where R=resistance

$\rho =resistivity$

L=Length

A=area of cross-section

$A=\frac{\pi d^2}{4}$

Thus $R\propto \frac{L}{d^2}$

therefore

$R_1\propto \frac{L_1}{d_1^2}$ --------1

$R_2\propto \frac{L_2}{d_2^2}$ --------2

divide 1 and 2 we get

$\frac{R_1}{R_2}=\frac{L_1}{L_2}\times \frac{d_2^2}{d_1^2}$

$\frac{R_1}{R_2}=\frac{30}{40}\times \frac{3.5^2}{3^2}$

$R_2=25\times 0.734\times 1.33$

$R_2=24.47 \Omega$

8 0

2 years ago

The Iceberg Kid, infamous for imposing a deep freeze on whoever disagrees with him, discovers that in his advanced teenaged year

Mademuasel [1]

Answer:

7.24 Ω

Explanation:

Power = energy / time = 195 J / 9.81 = 19.88 W

and power = V² / R

R resistance = 12 V² / 19.88 W = 7.24 Ω

8 0

2 years ago

What matches ????????????????

dangina [55]

Answer:

1st: Radiation

2nd: Conduction

3rd: Convection

Explanation:

I actually learned this before in school. Yay

8 0

2 years ago

Which type of science: biology ( the study of life), chemistry ( the study of atoms/molecules), or physics ( the study of forces

Alexandra [31]

In my opinion biology is the most interesting because it helps you understand why the thing around us are the way and help us survive.

6 0

2 years ago

Which best compares radiation and conduction?

Karolina [17]

Answer:

The statements that best compares radiation and conduction are the following: both transfer thermal energy from warm objects to cooler objects and both can transfer energy through matter. The difference is that conduction is through direct heat transfer; whereas, radiation transfers heat through waves.

6 0

2 years ago

Read 2 more answers