2 years ago

What best describes the mass of an electron?

Physics

1 answer:

wlad13 [49]2 years ago

6 0

Answer:

Explanation:

The mass of an electron is using the equation of 9.109 times 10. An electron is a particle that has a negative charge.

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On a vacation flight, you look out the window of the jet and wonder about the forces exerted on the window. Suppose the air outs

Anettt [7]

Answer:

The pressure difference is 25.8kPa while the force exerted on the window by air pressure is 3.02 kN

Explanation:

Using the Bernoulli's equation

$P_{in}+\frac{1}{2}\rho v_{in}^2=P_{out}+\frac{1}{2}\rho v_{out}^2$

Here

Pin-Pout is the pressure difference which is to be calculated.

ρ is the density of air whose value is 1.29 kg/m^3

vin is the velocity of air inside which is 0 m/s

vout is the velocity of air outside which is 200 m/s

Substituting values in the above equation yields

$\Delta P=P_{in}-P_{out}\\\Delta P=\frac{1}{2}\rho (v_{in}^2-v_{out}^2)\\\Delta P=\frac{1}{2}\times 1.29 ( 200^2-0)\\\Delta P=25.8 kPa$

So the pressure difference is 25.8kPa.

As force is given by

$F=PA\\F=\Delta P A\\$

Here

ΔP is the pressure difference calculated above
A is the area of the window given as

$A=L \times W\\A=0.26 \times 0.45\\A=0.117 m^2$

Now force is

$F=\Delta P A\\F=25.8 \tiems 10^3 \times 0.117\\F=3.02 kN$

So the force exerted on the window by air pressure is 3.02 kN

6 0

2 years ago

a 100gm copper block is heated in boiling water for 10min and then it is dropped into 150gm of water at 30 C in a 200gm calorime

Gekata [30.6K]

Don't ask me son i don't know

8 0

3 years ago

Sphere a has a charge of -1.6*10^-6 C and sphere B has a charge of 1*10^-6 C. If they’re touched then separated, what will the c

Artemon [7]

Uh..... a 3s LiPo?

hope it helps:)

6 0

2 years ago

the human nervous system can propagate nerve impulses at about 10 squared metered per second. estimate the time it takes to trav

rusak2 [61]

Use the formular d = v x t
d = 2m
v= 100m/s

t= d / v
= 2 / 100
= 0.02sec

7 0

2 years ago

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A dense metal sphere is dropped from a 10-meter tower, and at the exact same time an identical metal sphere is thrown horizontal

givi [52]

Answer:

A. Both spheres land at the same time.

Explanation:

The horizontal motion doesn't affect the vertical motion. Since the two spheres have the same initial vertical velocity and same initial height, they land at the same time.

7 0

2 years ago

Read 2 more answers