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3 years ago

The movement of crustal plates is best described as a:

2 answers:

5 0

Я в России не будет так классно было в прошлом и настоящем человеке и в России в г щеки как у щ есть и в этом случае не знаю что это не так как в России не ебыло щит и не кзнаю в контакте г не знаю почему так мало ее и не только в России не будет в России не щ и не только в щтом г

bazaltina [42]3 years ago

5 0

Answer:

it is number 3, continuing long-term process

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A slingshot can project a pebble at a speed as high as 38.0 m/s. (a) If air resistance can be ignored, how high (in m) would a p

kipiarov [429]

Answer:

73.67 m

Explanation:

If projected straight up, we can work in 1 dimension, and we can use the following kinematic equations:

$y(t) = y_0 + V_0 * t + \frac{1}{2} a t^2$

$V(t) = V_0 + a * t$ ,

Where $y_0$ its our initial height, $V_0$ our initial speed, a the acceleration and t the time that has passed.

For our problem, the initial height its 0 meters, our initial speed its 38.0 m/s, the acceleration its the gravitational one ( g = 9.8 m/s^2), and the time its uknown.

We can plug this values in our equations, to obtain:

$y(t) = 38 \frac{m}{s} * t - \frac{1}{2} g t^2$

$V(t) = 38 \frac{m}{s} - g * t$

note that the acceleration point downwards, hence the minus sign.

Now, in the highest point, velocity must be zero, so, we can grab our second equation, and write:

$0 m = 38 \frac{m}{s} - g * t$

and obtain:

$t = 38 \frac{m}{s} / g$

$t = 38 \frac{m}{s} / 9.8 \frac{m}{s^2}$

$t = 3.9 s$

Plugin this time on our first equation we find:

$y = 38 \frac{m}{s} * 3.9 s - \frac{1}{2} 9.8 \frac{m}{s^2} (3.9 s)^2$

$y=73.67 m$

6 0

3 years ago

A 54kg robot is moving 9m/s east and collides with a 46 kg robot that is moving 10m/s to the west, what will the final velocity

Flura [38]

Answer:

0 m/s cause they crashed so they can't move

7 0

3 years ago

Behaviors in deer such as herding and male deer using antlers to compete for females increase the chances of successful reproduc

lorasvet [3.4K]

Answer:

True

Explanation:

The reproductive success of any species is the capability to produce their offspring per breeding lifetime or event.

Most of the species have to attract their partners by their physical capability and build up so that the mother can choose her partner in order to breed the best kind of off spring.

In the context, in case of deer, the size of the their antlers as well as behavior in herding is considered as the best chances for a successful reproduction to compete among the males and find their breeding mate.

Thus the answer is TRUE.

6 0

2 years ago

As part of an experiment, a student burns propane (C3H8) to produce carbon dioxide (CO2) and water (H2O). She remembers that she

USPshnik [31]