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3 years ago

6

A person jumps forward off the front of a stationary boat floating on a lake. Identify the reaction force in this case, between

the person and the boat.

1 answer:

Mamont248 [21]3 years ago

3 0

<span>The boat applying a force on the person pushing her forward.
</span>
Hope this helps!

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You measure the power delivered by a battery to be 5.83 W when it is connected in series with two equal resistors. How much powe

BabaBlast [244]

Answer:

P = 23.32 W

Explanation:

In series

equivalent Resistance

R(eq)=R+R=2R

In parallel equivalent resistance

R(eq) = R*R/(R+R) =R/2

since.

power

P=V² / R

in series

⇒V = √(P*R)

=√(5.83*2R )

=√(11.66R)

in parallel

P = V² / R(eq)

=(√(11.66R)²) / (R/2)

P=11.66 * R * 2/R

P = 23.32 W

6 0

3 years ago

A diffraction grating has 2605 lines per centimeter, and it produces a principal maximum at = 30.3°. The grating is used with li

Yuri [45]

Answer:

so m = 3 ,4 wavelength between 410 to 660 nm so 484.25 nm and 645.6 nm light produce principal maximum

Explanation:

given data

grating =2605 lines per centimeter

angle = 30.3°

wavelengths between 410 and 660 nm

to find out

two wavelengths of the incident light that could have produced this maximum

solution

we know diffraction grating has 2605 lines / cm

so d = ( 1/ 2605 cm )

and we know equation

d sinθ = m× λ

so λ = d sinθ / m

θ = 30.3 so sin30.3 =

λ = (1/2605) sin30.3 / m

λ = (1937 nm ) / m

here put m = 1 , 2 , 3 , 4

if m = 1

λ = (1937 nm ) / 1 = 1937 nm

if m = 2

λ = (1937 nm ) / 2 = 968.5 nm

if m = 3

λ = (1937 nm ) / 3 = 645.6 nm

if m = 4

λ = (1937 nm ) / 4 = 484.25 nm

so that m = 3 ,4 wavelength between 410 to 660 nm so 484.25 nm and 645.6 nm light produce principal maximum

and longest wavelength is between 410 to 660 nm is 645.6 nm

6 0

4 years ago

What is the source of energy that directly drives atp synthase in its production of atp? hints what is the source of energy that

Alex787 [66]

The main source of energy for atp production through the process of photosynthesis is the sun's heat energy. Basically, it is the main driving force for a plant's metabolic reactions.

Thank you for posting your question here at Brainly. I hope I was able to help.

8 0

4 years ago

A system gains 1500J of heat and 2200J of work is done by the system on its surroundings. Determine the change in internal energ

Rina8888 [55]

Answer:

-700

formula is heat gained - work done

7 0

3 years ago

A super ball is dropped from a height of 100 feet. Each time it bounces, it rebounds half the distance it falls. How many feet w

Crank

The total distance travelled by the ball after the fourth impact is 275 feet.

<u>Explanation:</u>

Given-

Height, h = 100 feet

Rebounds half the distance

Distance in feet for the fourth time, x = ?

For the first time, the distance travelled by the ball is, x = 100 feet

For the second time, it will bounce up to 50 feet and fall upto 50 feet( half of 100 feet)

So, the distance travelled after the second impact, x = 100 + 50 + 50 = 200 feet

For the third time, it will bounce up to 25 feet and fall upto 25 feet( half of 50 feet)

So, the distance travelled after the third impact, x = 200 + 25 + 25 = 250 feet

For the fourth time, it will bounce up to 12.5 feet and fall upto 12.5 feet( half of 25 feet)

So, the distance travelled after the fourth impact, x = 250 + 12.5 + 12.5 = 275 feet

Therefore, total distance travelled by the ball after the fourth impact is 275 feet.

4 0

4 years ago