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grandymaker [24]

2 years ago

14

Which is a drawback of solar energy?

1 answer:

telo118 [61]2 years ago

4 0

Which is a drawback of solar energy?

<u> A. It depends on the climate. </u>

B. It is not a renewable resource.

C. It is difficult to use for electricity.

D. It can be a source of water pollution.

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If an acid is splashed on your skin , wash at once with

Blizzard [7]

water, if this were to occur u would want to immediately wash it with well water.

Reason: Strong bases react with the oils in your skin to produce a soapy feeling layer. Rinse until well after that feeling is gone.

6 0

3 years ago

In which situation is the speed of the car constant while its velocity is changing?

Sati [7]

Answer:

B, the car travels around a circular track at 30 m.

Explanation:

7 0

2 years ago

A 78 kg skydiver can be modeled as a rectangular "box" with dimensions 24 cm × 35 cm × 170 cm . If he falls feet first, his drag

ANTONII [103]

Answer:

The terminal speed of his is 137.68 m/s.

Explanation:

Given that,

Mass of skydiver = 78 kg

Area of box $A =24\times35=840\ cm$

Drag coefficient = 0.80

Density of air $\rho= 1.2\times kg/m^3$

We need to calculate the terminal velocity

Using formula of drag force

$F_{d} = \dfrac{1}{2}\rho v^2Ac$

Where,

$\rho$ = density of air

A = area

C= coefficient of drag

Put the value into the formula

$78\times9.8=\dfrac{1}{2}\times1.2\times v^2\times24\times10^{-2}\times35\times10^{-2}\times0.80$

$v^2=\dfrac{2\times78\times9.8}{1.2\times24\times10^{-2}\times35\times10^{-2}\times0.80}$

$v=\sqrt{\dfrac{2\times78\times9.8}{1.2\times24\times10^{-2}\times35\times10^{-2}\times0.80}}$

$v=137.68\ m/s$

Hence, The terminal speed of his is 137.68 m/s.

3 0

3 years ago

In a double-slit experiment, it is observed that the distance between adjacent maxima on a remote screen is 1.0 cm. what happens

Studentka2010 [4]

As the displacement of the maxima is calculated with the equation
(displacement)y=(m<span>λD)/slit separation (d)
halving the split separation doubles the displacement</span>

3 0

2 years ago

How far would a cantaloupe fall in 5.0 seconds of true free fall?

RUDIKE [14]

Answer:

i think the answer is about 50 m/s

7 0

2 years ago