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3 years ago

20 POINTS! ANSWER THE QUESTION NOT JUST FOR POINTS!

Physics

2 answers:

Bumek [7]3 years ago

5 0

B! Gravity would pull them to the ground

FrozenT [24]3 years ago

4 0

D. Gravity would make the notebook fall sooner because it is heavier.

have a nice day! <3

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NEED THIS ANSWER ASAP!

Sveta_85 [38]

h = average height of Niagara falls = 45 m

P = power generated by Stations I and II together = 1926 MW = 1926 x 10⁶ Watt

m = mass of water required to go over the falls

g = acceleration due to gravity

t = time = 1 sec

Power generated is given as

Power generated = potential energy lost/time

P = mgh/t

1926 x 10⁶ = m (9.8) (45)/1

m = 1926 x 10⁶ /(9.8 x 45)

m = 4.4 x 10⁶ kg

it is given that , 1 kg = 1 litre

hence

hence Volume of water = V = 4.4 x 10⁶ litre

4 0

3 years ago

Read 2 more answers

the fastest airplane is the lockheed sr 71 blackbird a high altitude spy plane first built in 1964. if an sr-71 is clocked trave

devlian [24]

For the motion of the plane it is given to us that it travel 15.0 km in 15.3 s

So here we can use the formula of average velocity to find it

formula is given as ratio of total displacement and total time

$v = \frac{displacement}{time}$

here it is given that

$displacement = 15.0 km$

time = 15.3 s

we need to convert the time into hour as the speed is required in km/h

so we know that

$1 h = 3600 s$

$t = 15.3 s * \frac{1h}{3600 s}$

$t = 4.25 * 10^{-3} h$

now by the above formula

$v = \frac{15.0}{4.25 * 10^{-3}}$

$v = 3529.4 km/h$

so the velocity of the plane would be 3529.4 km/h

8 0

4 years ago

Help me<br> please <br> lol<br> ?????

myrzilka [38]

Answer:

150 N= 15 or 150 N= 1.1

Explanation:

What I did was subtract 165kg and 150 N and I divided it too but I got 1.1 so yuhh

4 0

3 years ago

If a girl walks 6km due west changes directions and walk another 5km due north. Find her displacement in both magnitude and dire

xenn [34]

Answer:

the girl's displacement in both magnitude and direction is 7.81 m at 50.2⁰ North west.

Explanation:

Given;

6km due west, and

5km due north

The magnitude of her displacement is calculated by forming a right angled triangle. The hypotenuse side of the triangle is the girl's displacement.

d² = 5² + 6²

d² = 25 + 36

d² = 61

d = √61

d = 7.81 m

The direction of the girl is calculated as;

$tan \ \theta = \frac{6}{5} \\\\tan \ \theta = 1.2\\\\\theta = tan^{-1} (1.2)\\\\\theta = 50.2^0$

Therefore, the girl's displacement in both magnitude and direction is 7.81 m at 50.2⁰ North west.

4 0

3 years ago

Would a tiger be a consumer or producer?

patriot [66]

Tigers don't produce anything useful, but they are the top of their food chain. They would e top predators, and top predators are always consumers.

5 0

3 years ago