Which of the following is least likely to be a scientific experiment?

Compared to the climate conditions of dry inland locations, the climate conditions of locations influenced by a nearby ocean gen

tigry1 [53]

<span>If this question has the same list of choices as the ones posted here before, then the answer would be,the fourth choice.

When compared to the climate conditions of dry inland locations, the climate conditions of locations influenced by a nearby ocean generally result in </span>cooler summers and warmer winters, with a smaller annual range of temperatures .

Hope this helps.

6 0

4 years ago

Zach runs a 100-meter race. 7 seconds after the race started Zach is 35 meters from the starting line and reaches his max speed;

Angelina_Jolie [31]

Answer:MaxSpeed=8 m/s. Additional distance during z seconds after top speed is 8*z meters. Now the distance at 7+z seconds after the race starts is D=( 35+8*z) meters. For x ≥ 7 the time of the race, then D=(35+(x-7)*8) meters is the distance traveled during that time.

Explanation:

First we are interested in calculating the top speed, that is constant. We know at 35 meters he reaches the top speed and this happens 7 seconds after the race started. Also he is at 75 meters from the starting line 12 seconds after the beginning, then we can use the definition of speed, in this case is constant, to get its value: Speed=change in distance / change in time

Then Speed= (75-35)meters/(12-7)seconds = 40m/5s=8m/s. That is the topspeed=8 m/s

Now from the 35 meters he runs at constant speed, then if we are told he runs z seconds and we are asked the distance he runs in that time, we know the distance at constant speed is D=V*t,

then D= 8m/s * z seconds=8z meters.

But here since the run is a 100 meters-race we have an upper bound for z, here he has left (100-35)=65 meters to run at 8m/s, then he can maximum run additional 8,125 second or 15,125 seconds in total for the race.

That is D=8*z meters, with z < 8,125 seconds, this is the additional distance he can run after reaching his top speed.

Now the distance at 7+z seconds after the race starts is D=( 35+8*z) meters, the first 35 m he runs until reaching his top speed and the rest of the distance at this speed.

for x the total time of the run at a given point, we are asked the distance he has traveled at that time, then we are also told x ≥ 7, then D=(35+(x-7)*8) meters, we subtract the 7 initial seconds because they are already counted in the initial 35 meters.

7 0

4 years ago

5. Which describes the reaction of a substance to form one or more nen substances?

murzikaleks [220]

Answer:

A chemical reaction

Explanation:

In a physical change the chemical composition of a matter stays the same. One example is a change in state of matter. Consider water, you can heat it to vapour and cool it to form ice but you can get the exact same mass and colour after any physical change happens.

To form a two or more substance an internal arrangement of atoms must happen. For that chemical change should occur as only in chemical reactions atoms are rearrange to form new substances.

5 0

4 years ago

List and describe the forces that act on a block as it moves down the ramp at constant speed.

Vitek1552 [10]

gravity, inertia, friction, kinetic energy?

7 0

3 years ago

A woman falls to the ground while wearing a parachute. The air resistance on the parachute of the parachute is 500N. If the woma

yaroslaw [1]

The fact that the woman falls at a constant velocity means its acceleration is zero.
For Newton's second law, the resultant of the forces acting on a body is equal to the product between the mass m of the body and its acceleration a:
$\sum F = ma$
In our problem, the acceleration is zero, so the resultant of the forces should be zero as well.

Only two forces are acting on the woman: the air resistance R (upward, 500 N) and the weight W (downward). The resultant of these two forces is zero, so
$R-W=0$
$W=R$
and since the air resistance R is 500 N, then the weight (the gravitational force) of the woman is 500 N as well.

4 0

4 years ago

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