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3 years ago

WILL MARK BRAINLIEST IF CORRECT. WILL GIVE 30 POINTS. PLEASE ANSWER

Physics

1 answer:

FromTheMoon [43]3 years ago

7 0

Answer:

it increases economical level .water will be polluted.water cycle do not take place nicely.it causes global warming and acid rainfall

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By evaluating their dot product, find the values of the scalar s for which the two vectors ~b = ˆx + syˆ and ~c = ˆx−syˆ are ort

AlladinOne [14]

Answer:

$s=\pm 1$

Explanation:

The dot product of two vectors $\vec{a}=a_1\vec{x}+b_1\vec{y}$ and $\vec{b}=a_2\vec{x}+b_2\vec{y}$ is given by

$\vec{a}\cdot\vec{b}=a_1\cdot a_2+b_1\cdot b_2$

The dot product of two orthogonal vector is always zero thus if $\vec{a}=\vec{x}+s\vec{y}$ and $\vec{b}=\vec{x}-s\vec{y}$ , their dot product would be

$\vec{a}\cdot\vec{b}=1\times1+s\times-(s)=1-s^2=0$

$\implies 1-s^2=0$

$\implies s^2=1$

$\implies s=\pm 1$

4 0

3 years ago

Scenario A: A 3 spring is compressed a distance of 1.0 m. Scenario B: A 6 spring is compressed a distance of 0.8 m. Scenario C:

lapo4ka [179]

The CORRECT answer is B

6 0

3 years ago

Read 2 more answers

Solve for M₂

soldi70 [24.7K]

Explanation:

M₂ = Fr²/GM₁

M₂ = [(132N)(.243m)²]/[(6.67*10^-11N*m²/kg)(1.175*10^4kg)]

M₂ = (7.79N*m²)/(7.84*10^-7N*m²)

M₂ = 9.94*10^6 kg

5 0

3 years ago

Two soccer players start from rest, 36 m apart. They run directly toward each other, both players accelerating. The first player

Cerrena [4.2K]

A) Both players are moving by uniformly accelerated motion, and we can write the position at time t of each of the two players as follows:
$x_1(t)= \frac{1}{2}a_1 t^2$
$x_2(t)=d- \frac{1}{2}a_2 t^2$
where
$a_1 = 0.58 m/s^2$ is the acceleration of the first player
$a_2=0.42 m/s^2$ is the acceleration of the second player
$d=36 m$ is the initial distance between the two players
and where I put a negative sign in front of the acceleration of the second player, since he's moving in the opposite direction of the first player.

The time t at which the two players collide is the time t at which $x_1 = x_2$ , therefore:
$\frac{1}{2}a_1 t^2 = d- \frac{1}{2}a_2 t^2$
from whic we find
$t= \sqrt{ \frac{2d}{a_1+a_2} }= \sqrt{ \frac{2 \cdot 36 m}{0.58 m/s^2+0.42 m/s^2} }=8.5 s$

b) We can use the equation of $x_1(t)$ to find how far the first player run in t=8.5 s:
$x_1(t)= \frac{1}{2}a_1 t^2= \frac{1}{2}(0.58 m/s^2)(8.5 s)^2=21.0 m$

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3 years ago

Compared to the amount of heat jupiter receives from the sun, jupiter radiates _____ heat.

uysha [10]

C
http://education.seattlepi.com/planet-gives-off-2-times-much-heat-receives-sun-5420.html

3 0

3 years ago