Ask question

Ask question

All categories

3 years ago

7

How is Oil bad for the environment?

2 answers:

stepladder [879]3 years ago

6 0

Oil spill on land and in the oceans and kills wildlife like the great barear reef

larisa [96]3 years ago

3 0

It can cause damage to water and air because it either can make the water dirty and unable animals to live in or harming the atmosphere

You might be interested in

In a vacuum, two particles have charges of qs and q, where 91-+4.0 C. They are separated by a distance of 0.23 m, and particle 1

Marrrta [24]

Answer:

$q_2 = - 1.66\times 10^{-13} c$

Explanation:

Given data:

if two charge are opposite in charge then force will be attractive between then or vice versa

if one charge is positive then other charge will be negative

from coulomb's law

$f = \frac{1\times q_1\times q_2}{4\pi \epsilon_o \times r^2}$

$\frac{1}{4\pi \epsilon_o} = 9\times 10^{9}$

$3.1 N = 9\times 10^{9} \frac{91.4\times q_2}{0.23^2}$

$q_2 = \frac{3.1\times 0.21^2}{9\times 10^{9}\times 91.4}$

$q_2 = - 1.66\times 10^{-13} c$

4 0

3 years ago

The more force you put on a material, the more it .......?

Brilliant_brown [7]

Answer:

the faster it moves(if it is free) . the less the inertia (potential) and the more the inertia (kinetic)

the more (at times x2) force and momentum it comes back at you

7 0

3 years ago

Read 2 more answers

Around what year can Carbon-14 dating be used up to and why?

Fofino [41]

Idk<span>Around what year can Carbon-14 dating be used up to and why?</span>

7 0

3 years ago

An object with mass 1.2 kg is moving at a constant speed in a circle with radius 2.5 m. If the

SpyIntel [72]

Answer:

3.9m/s² is the acceleration

4 0

3 years ago

A girl swings a 0.250 kg rock attached to a taut string in a circle around her head. Her hand holds the end of the string above

nydimaria [60]

Complete Question

The diagram of with this question is shown on the first uploaded image

Answer:

The value is $v = -6.543 \^ i + 9.47 \^ j + 0 \^ k$

Explanation:

From the question we are told that

The mass of the rock is $m = 0.250 \ kg$

The length of the string is $L = 0.75 \ m$

The angle the string makes horizontal is $\theta = 11.9^o$

The angle which the projection of the string onto the xy -plane makes with the positive x-axis is $\phi = 34.6^o$

The angular velocity of the rock is $w = 2.50 rev/s = 2.50 * 2\pi =15.7 \ rad/s$

Generally the radius of the circle made by the length of the string is mathematically represented as

$r = L cos(\theta )$

=> $r = 0.75 cos(11.9 )$

=> $r = 0.734 \ m$

Generally the resultant tangential velocity is mathematically represented as

$v__{R}} = w * r$

=> $v__{R}} = 15.7 *0.734$

=> $v__{R}} = 11.5 \ m/s$

Generally the tangential velocity along the x-axis is

$v_x = -v__{R}} * sin(\phi)$

=> $v_x =- 11.5 * sin(34.6)$

=> $v_x = -6.543 \ m/s$

The negative sign show that the velocity is directed toward the negative x-axis

Generally the tangential velocity along the y-axis is

$v_y = v__{R}} * cos(\phi)$

=> $v_y = 11.5 * cos(34.6)$

=> $v_y = 9.47 \ m/s$

Generally the tangential velocity along the y-axis is

$v_z = v__{R}} * cos(90)$

=> $v_z = 0 \ m/s$

Generally the tangential velocity at that instant is mathematically represented as

$v = -6.543 \^ i + 9.47 \^ j + 0 \^ k$

8 0

3 years ago