What is the science behind snorkeling

BaLLatris [955]

Answer:1

Explanation:

7 0

3 years ago

Choose the correct statement regarding projectile motion in the absence of air resistance. Assume the object is at sea level mov

pishuonlain [190]

Answer:

Explanation:

The magnitude of the acceleration in the x direction is always zero: TRUE.

At the apex, in the y direction the velocity is zero and the accelration is positive. TRUE.

At the apex, in the x direction, the velocity is zero and the acceleration is zero. FALSE. The accelration is zero, but the velocity is the same it had when it was shot.

The magnitude of the velocity in the y direction is always constant. FALSE, it's subject to gravity and it's velocity varies as $v=v_0 - 9.81ms^{-2} t$

At the apex, in the Y direction, the velocity is negative and the acceleration is zero. FALSE. Velocity is zero, Acceleration is $9.81 ms^{-2}$ , towards the negative y axis

7 0

3 years ago

a car dealer sells 4 makes of cars in 5 colors with either standard or automatic transmissions. how many variations does the dea

Anuta_ua [19.1K]

The number of variations the dealership have is 40 cars.

Data given;

The number of different product = 4
The number of transmission = 2 (standard or automatic)
The numbers of colors available = 5

<h3>Dealership variation </h3>

This is the total numbers of cars available in the dealer shop at the moment.

To get that, we simply multiply the numbers of colors available, the number of transmission and the makes of car available.

This is equal to

$4*2*5=40$

From the above calculation, we can say that the variations the dealership offers is 40

Learn more on combination here

brainly.com/question/10339517

7 0

3 years ago

When an object accelerates, what about its motion changes? Question 1 options: Speed must change, but not velocity. Both speed a

QveST [7]

Answer:

The velocity must change but not speed.

Explanation:

Velocity is defined as the displacement by time. Whereas speed is expressed as the distance between two successive positions of the body to the time interval it took to travel.

Velocity, V = D / t m/s

Speed, s = d /t m/s

Velocity is a vector quantity that has a magnitude and direction.
The speed is a scalar quantity having only the magnitude.
At any instant of time, the magnitude of the velocity is always equal to the magnitude of the speed. The magnitude of velocity, |v | = magnitude of speed, |v |. The magnitude is always positive
The acceleration of a body is defined as the rate of change of velocity to time.

a = (v - u) / t m/s²

If a body is accelerating, It varies its velocity with respect to time.
In case of uniform circular motion, the speed remains constant, but the velocity changes continuously.

So, in the case of circular motion if an object accelerates, velocity must change but speed remains constant.

5 0

4 years ago

In what substance would heat transfer by conduction work best? Oxygen, iron, water, or alcohol

hodyreva [135]

Iron is the answer. Becaues its solid and it's particles are closest to each other. And well.metals are good at transferring heat.

3 0

3 years ago

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