Ask question

Ask question

All categories

pickupchik [31]

3 years ago

9

HELPPP PLEASE URGENT

1 answer:

Shtirlitz [24]3 years ago

8 0

B i believe BUT IF IT DONT WORK IM SORRY LOLZ

You might be interested in

Explain two ways in which humans are related<br>to whales.

Maksim231197 [3]

Answer:

humans and whales are both mammals

humans and whales can breathe air

4 0

3 years ago

Calculate the final speed of a 110-kg rugby player who is initially running at 8.00 m/s but collides head-on with a padded goalp

Contact [7]

<span>The answer is -0.8 m/s. We know acceleration is the average of final minus initial velocity over time (a = (vf-v0)/t). We also know that Force is equal to Mass times Acceleration (F = ma). Using our force equation, we know that the acceleration we get is negative 8.8 (-8.8). The force is acting in the opposite direction of the rugby player, hence the negative sign. From there, plug in that number for a in the velocity equation, and solve for vf, as v0 and t are known. We get 0.8 m/s in the opposite direction that the player was running.</span>

6 0

3 years ago

What are the (time varying) amplitudes of the E and H fields if summer sunlight has an intensity of 1150 W/m2 in any Town?

Archy [21]

Explanation:

Given that,

Intensity = 1150 W/m²

(a). We need to calculate the magnetic field

Using formula of intensity

$I=\dfrac{E^2}{2\mu_{0}c}$

$E=\sqrt{2\times I\mu_{0}c}$

Put the value into the formula

$E=\sqrt{2\times1150\times4\pi\times10^{-7}\times3\times10^{8}}$

$E=931.17\ N/C$

Using formula of magnetic field

$B = \dfrac{E}{c}$

Put the value into the formula

$B=\dfrac{931.17}{3\times10^{8}}$

$B=0.0000031039\ T$

$B=3.10\times10^{-6}\ T$

(b). The relative strength of the gravitational and solar electromagnetic pressure forces of the sun on the earth

We need to calculate the gravitational force

Using gravitational force

$F=\dfrac{Gm_{s}M_{e}}{r^2}$

Put the value into the formula

$F=\dfrac{6.67\times10^{-11}\times1.98\times10^{30}\times5.97\times10^{24}}{(1.496\times10^{11})^2}$

$F=3.522\times10^{22}\ N$

We need to calculate the radiation force

Using formula of force

$F_{R}=\dfrac{I}{c}\pi\timesR_{E}^{2}$

Put the value into the formula

$F_{R}=\dfrac{1150}{3\times10^{8}}\times\pi\times(6.378\times10^{6})^2$

$F_{R}=4.8\times10^{8}\ N$

The gravitational and solar electromagnetic pressure forces of the sun on the earth

$\dfrac{F_{G}}{F_{R}}=\dfrac{3.522\times10^{22}}{4.8\times10^{8}}$

$\dfrac{F_{G}}{F_{R}}=7.3375\times10^{13}$

Hence, This is the required solution.

3 0

3 years ago

The pull is always toward the _____ of the planet

Nataly [62]

The correct answer is center. Hope this helps.

8 0

3 years ago

Read 2 more answers

(a) List the four classifications of steels. (b) For each, briefly describe the properties and typical applications.

tatiyna

Answer:

Type of steels and their uses :

Type Carbon percentage uses

Low carbon steel 0.1% to 0.3 % Food cans ,car body ,nut & bolt.

Medium carbon steel 0.3% to 0.70 % Metal chains ,wheel rims,wire ropes

High carbon steel 0.7% to 1.3% Hammers,drills ,dies and taps.

High speed steel 0.6 % Cutting tools in lathe machine.

Type Properties

Low carbon steel - Fairly strong and easily get rusty

Medium carbon steel - Having high hardness than low carbon steel

High carbon steel - Having high hardness than medium carbon steel

High speed steel - Harder ,can retain its shape at high temperature

4 0

4 years ago