All categories

3 years ago

How does the construction of dams positively affect natural resources?

Physics

1 answer:

Radda [10]3 years ago

4 0

C. By preventing flooding, creating reservoirs, and providing water for irrigation

You might be interested in

Review. As an astronaut, you observe a small planet to be spherical. After landing on the planet, you set off, walking always st

anyanavicka [17]

To find the mass of the planet we will apply the relationship of the given circumference of the planet with the given data and thus find the radius of the planet. From the kinematic equations of motion we will find the gravitational acceleration of the planet, and under the description of this value by Newton's laws the mass of the planet, that is,

The circumference of the planet is,

$\phi = 25.1m$

Under the mathematical value the radius would be

$\phi = 2\pi r$

$r = \frac{25}{2\pi}$

$r = 3.9788km$

Using second equation of motion

$x = \frac{1}{2} at^2$

Replacing the values given,

$1.4 = \frac{1}{2} a (29.2)^2$

Rearranging and solving for 'a' we have,

$a = 0.003283m/s^2$

Using the value of acceleration due to gravity from Newton's law we have that

$a = \frac{GM}{r^2}$

Here,

r = Radius of the planet

G = Gravitational Universal constant

M = Mass of the Planet

$\frac{(6.67*10^{-11})*M}{(3.9788*10^3)^2} = 0.003283$

$M = 7.79201*10^{14}kg$

Therefore the mass of this planet is $7.79201*10^{14}kg$

5 0

3 years ago

Will the 79 kg skier in the figure below slide down if f the coefficient of static friction is 0.25?

mariarad [96]

Answer:

Man will not slide down

Explanation:

Given:

Coefficient of static friction = 0.25

Angle = 13°

Computation:

Man will slide down if

tan13° > Coefficient of static friction

Tan 13 = 0.23

So,

0.23 < 0.25

So,

Man will not slide down

4 0

3 years ago

Use your knowledge of the properties of the different states of matter to determine in which state sound would travel the fastes

Marizza181 [45]

Answer:

Explanation:

4 0

3 years ago

A parallel-plate capacitor in air has a plate separation d = 4 mm and square plates with area A = 25.0 cm^2. The plates are main

Nikolay [14]

Answer: $179.79 \times 10^{-9} J$

Explanation:

Given

Separation (d)=4 mm

Area of cross-section $=25 cm^2$

Potential difference=255 V

$C=\frac{\epsilon A}{d}=5.53 \times 10^{-12}F$

charge $(Q)=CV=5.53\times 225=1411.10\times 10^{-12} C$

Energy stored $=\frac{cv^2}{2}$

$E=\frac{5.53\times 10^{-12} 255^2}{2}=179.79 \times 10^{-9} J$

3 0

3 years ago

Which type of parenting characteristic lends itself to wanting to be more of a friend than a parent?

polet [3.4K]

Answer

Permissive Parenting Style

Explanations

In this type of parenting,parents are loving and nurturing.They put kids as the center of their lives.They fail to teach kids how to do for themselves because they enjoy doing for their kids.They befriend their kids thinking that this way will build a good relationship with them instead of providing a correct parent-child dynamic.Such parents believe that a good way to resolve conflicts with kids is to give in.

5 0

3 years ago