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3 years ago

Mark the false statements.

Physics

1 answer:

UkoKoshka [18]3 years ago

6 0

Answer:

false statement are C , F , D.

Explanation:

false statement are C , F , D.

a) triple bond consist of two π bond and one sigma bond.

b) in double bond one bond is σ bond and one is π bond.

c) end to end overlapping is in σ bond and electron density in σ bond lie between the nuclei.

true statements are A, B , E.

π bond restrict rotation is correct and then the statement of bond formation between s orbital is σ bond.

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Two 10cm diameter metal disks separated by a 0.63mm thick piece of pyrex glass are charged to a potential difference of 1000V. D

inessss [21]

Parallel-plate capacitor has there fore formula is

C=(ϵ0A)/d
putting valuesC=(8.85*10^-12*pi*.05^2)/.00063
=1.1*10^-10F then Q=CV=1.1*10^-10*1000=1.1*10^-7C
as
η=Q/Atherefore
(1.1*10^-7)/(pi*.05^2)
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5 0

4 years ago

1. A 700 kg satellite is in orbit 2.4 x 106 meters from the center of the Earth. What is the force of

nevsk [136]

Answer:

$4.8 \cdot 10^4 N$

Explanation:

The force of gravity acting on the satellite is given by:

$F=\frac{GMm}{r^2}$

where

G is the gravitational constant

$M=5.98\cdot 10^{24} kg$ is the Earth's mass

m is the mass of the satellite

r is the distance of the satellite from the Earth's centre

Here we have

m = 700 kg

$r=2.4\cdot 10^6 m$

Substituting into the equation, we find:

$F=\frac{(6.67\cdot 10^{-11})(5.98\cdot 10^{24})(700)}{(2.4\cdot 10^6)^2}=4.8 \cdot 10^4 N$

Note that the distance mentioned in the problem (2.4 x 10^6 meters) is not realistic, since it is less than the radius of the Earth (6.37 x 10^6 meters).

3 0

3 years ago

The power source with the lowest environmental impact is

shutvik [7]

Nuclear Fission s a power source with a very low environmental impact.

5 0

3 years ago

Describe radioactive decay.

Snezhnost [94]

The spontaneous transformation of an unstable atomic nucleus into a lighter one, in which radiation is released in the form of alpha particles, beta particles, gamma rays, and other particles. The rate of decay of radioactive substances such as carbon 14 or uranium is measured in terms of their half-life .

7 0

3 years ago

An early submersible craft for deep-sea exploration was raised and lowered by a cable from a ship. When the craft was stationary

Alenkinab [10]

Answer:

T = 4200N

Explanation:

When the submersible craft is at rest, the tension in the cable is 6000N.

With this information you can calculate the weight of the craft by summing the forces (the summation of the force is zero because the craft is at rest):

$T-W=0\\\\W=T=6000N$

When the craft is going down with a constant speed, there is a drag force of 1800N. Then, by using the second Newton law you have:

$T-W+F_d=0$ (1)

Fd: drag force

The summation of the forces is zero because the craft moves with constant velocity, that is, there is no acceleration.

You calculate the new tension on the cable by solving the equation (1) for T:

$T=W-Fd=6000N-1800N=4200N$

hence, the tension is 4200N

5 0

3 years ago