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3 years ago

Another name for the horizontal rows on the periodic table of elements

Physics

2 answers:

Gnoma [55]3 years ago

8 0

Answer:

Periods

Explanation:

In-s [12.5K]3 years ago

7 0

The answer is a period your welcome

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Three resistors of resistances, R1=10Ω, R2=5Ω, R3=20Ω are connected in a circuit in such way that same amount of current flows t

Nezavi [6.7K]

Answer

Explanation:

As the three resistors are connected in series, the expression to be used for the

calculation of RT equivalent resistance

is:

RT = R1 + R2 + R3

We replace the data of the statement in the previous expression and it remains:

5 10 15 RT + R1 + R2 + R3 + +

We perform the mathematical operations that lead us to the result we are looking for:

RT - 30Ω

5 0

3 years ago

Automobile traveling at 65 mph constant on the road described below. Find rate at which radar must rotate when theta = 15 deg. A

Finger [1]

Answer:

The rate at which radar must rotate is 0.335 rad/s.

Explanation:

Given that,

Velocity = 65 m/h = 29.0576 m/s

Angle = 15°

Suppose, the radius given by

$r=(100\cos2\theta)\ m$

We need to calculate the rate at which radar must rotate

Using formula of linear velocity

$v=r\omega$

$\omega=\dfrac{v}{r}$

Where, v = velocity

r = radius

Put the value into the formula

$\omega=\dfrac{29.0576}{100\cos30}$

$\omega=0.335\ rad/s$

Hence, The rate at which radar must rotate is 0.335 rad/s.

3 0

3 years ago

Object A is placed on top of object B. Object A is the same temperature as object B. How will heat flow between object A and obj

mash [69]

"No heat will flow between object A and object B" is the one among the following choices given in the question that describes how heat will <span>flow between object A and object B. The correct option among all the options that are given in the question is the second option or option "B". I hope it helps you.</span>

6 0

3 years ago

Read 2 more answers

A person throws a balloon straight down above level ground. The balloon bounces back up into the air. Drag force is significant

love history [14]

Explanation:

a) Balloon is being thrown down and is speeding up;

mg > $F_drag$

b) Balloon is in the air on its way down and moving with constant speed.

$F_drag$ =mg

c) The Balloon is on the ground and rest instantaneously

mg = Normal

d) Balloon is moving slowly downward;

e) Because, at the peak of trajectory drag force is 0.

Drag force = 0

5 0

3 years ago

Calculate the cenrtripetal acceleration of the Earth in

miv72 [106K]

Answer:

$0.00594\ m/s^2\ \text{towards the Sun}$

$3.54737\times 10^{22}\ N$

Explanation:

r = Distance between Earth and Sun = $1.5\times 10^{11}\ m$

Time taken to complete one rotation around Sun is given by

$T=365.25\times 24\times 3600$

Centripetal acceleration is given by

$a=\dfrac{v^2}{r}\\\Rightarrow \\\Rightarrow a=\dfrac{(\dfrac{2\pi r}{T})^2}{r}\\\Rightarrow a=\dfrac{4\pi^2r}{T^2}\\\Rightarrow a=\dfrac{4\pi^2\times 1.5\times 10^{11}}{(365.25\times 24\times 3600)^2}\\\Rightarrow a=0.00594\ m/s^2\ \text{towards the Sun}$

The centripetal acceleration of the Earth in its orbit is $0.00594\ m/s^2\ \text{towards the Sun}$

Force is given by

$F=ma\\\Rightarrow F=5.972\times 10^{24}\times 0.00594\\\Rightarrow F=3.54737\times 10^{22}\ N$

The force on the Earth is $3.54737\times 10^{22}\ N$

4 0

3 years ago