All categories

3 years ago

How do consumers harness the suns power and use it as an energy source ?

2 answers:

4 0

The only widely-accepted activity of that sort is the universal habit
of operating our bodies on the solar energy stored in plants.

Other than that, the availability of free solar energy in the forms of
real-time wind and radiation is still not used to any great extent, as
a percentage of worldwide energy demand. By and large, energy
consumers are still a lot more comfortable with the chemical energy
stored in wood, coal, and rotted dead dinosaurs.

VashaNatasha [74]3 years ago

3 0

Solar power is one, humans eat plants and plants make food by using the sun and the sun is a source of all energy

You might be interested in

Two forces act on a 16 kg object. The first force has a magnitude of 68 N and is directed 24 degrees north of east. The second f

Vlada [557]

Answer:

The correct Answer to the question is : e) 4.1 m/s^2, 52 degrees north of east

Explanation:

F1= 68 N < 24º = 62.12 i + 27.65 j

F2= 32N < 132º = -21.41 i + 23.78 j

R= F1+F2= 40.71 i +51.43 j = 65.59 N < 51.63 º

By 2nd law of newton:

F= m * a

R= m*a

a= R/m

a= 4.1 m/s² < 52º (52 degrees north of east)

I consideer 0º at the EAST axis.

4 0

3 years ago

Read 2 more answers

In one word, how do you determine the net force if the forces are in the same direction?

kipiarov [429]

Answer:

Forces Acting in the Same Direction

If two forces act on an object in the same direction, the net force is equal to the sum of the two forces.

Explanation:

4 0

3 years ago

Determine the magnitude of the resultant force FR=F1+F2FR=F1+F2. Assume that F1F1F_1 = 235 lblb and F2F2F_2 = 350 l

DENIUS [597]

Answer:

585lb

Explanation:

Given the following

F1 = 235lb

F2 = 350lb

The resultant is expressed as;

FR = F1+F2

Substitute the given values

FR = 235+350

FR = 585lb

Hence the magnitude of the resultant is 585lb

7 0

3 years ago

PLEASE HELP!!! WILL MARK BRAINLIEST!!!!!!!!!!!!!!!!!!!!

Georgia [21]

Its C
:)
Also have a nice day

4 0

3 years ago

I'M GIVING 95POINTS PLZ HELP!!

Travka [436]

initial height = 25000 ft

as we know that

1 ft = 0.3048 m

so we have

H = 25000(0.3048) = 7620 m

If mass of the man = 90 kg

now the initial potential energy is given as

$U = mgh$

$U = (90)(9.8)(7620)$

$U = 6.72 \times 10^6 J$

Gravitational force that is acting on it is given by

$F = mg$

$F = 90(9.8) = 882 N$

so this is the force by which earth is attracting him towards it as we can see due to this force the man is accelerating towards the earth

As we know that gravitational force is given by

$F = \frac{GMm}{r^2}$

here we know that

r = R + h

R = radius of earth ( $6.37 \times 10^6 m$ )

h = 7620 m

now we have acceleration at that point is

$a = \frac{F}{m}$

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

$a = \frac{(6.67\times 10^{-11})(5.98 \times 10^{24})}{(6.37 \times 10^6 + 7620)^}$

$a = 9.806 m/s^2$

by energy conservation we have

$KE = PE$

$\frac{1}{2}mv^2 = mgh$

$v^2 = 2gh$

$v^2 = 2(9.8)(7620)$

$v = 386.5 m/s$

final speed due to wind resistance is 150 mph

now we know that

1 mile = 1609 meter

so this speed in m/s is given as

$150 mph = 150(\frac{1609 m}{3600 s})$

$v = 67 m/s$

No Luke is not accelerating when his speed is 150 mph

because at this speed his velocity will become constant

and since there is no change in velocity so his acceleration will become zero

since at 150 mph the acceleration of Luke is zero

so net force on him must be zero

so we will have

wind force = weight or force due to earth

$F_{wind} = 882 N$

If there is no wind resistance then there will be energy conservation

so KE = PE

$KE = 6.72 \times 10^6 J$

#10

Net will reduce the velocity of luke to be zero by taking long time

As we know that force on a system is given by

$F = \frac{\Delta P}{\Delta t}$

so if we increase the time interval here then we will have less force

so Luke will unhurt due to more time to decrease his speed to be zero

5 0

3 years ago