Question 1:
Looking for: "speed" (velocity: v)
Given: 112.0 meters (distance: d) 4.0 seconds (time: t)
Formula used: v=d/t
since velocity is equal to the distance (112m) divided by the time (4sec) you would have 112m/4s which is 28m/s. m/s is meters traveled per second traveling aka meters per second.
Question 2:
Looking for: average "speed" don't let the word average confuse you it is still velocity.
Given: 60km (distance: d) and 3.5 hours (time: t)
Formula required: v=d/t
Since velocity needs to be in the units of m/s first convert your time, which was provided in hours, to seconds.
3.5 hours 60 minutes per hour: 3.5 x 60= 210 minutes
210 minutes 60 seconds per minute: 210 x 60= 12600 seconds
also, kilometers needs to be converted to meters. The prefix kilo means 1000 so 1 kilometer = 1000 meters.
60 x 1000 = 60,000 meters
Plug the values into the equation required:
v=d/t
v= 60,000m / 12,600sec
v= 4.76 m/s
<span>Weight of block, Wb = mass*gravity = 50*9.8 = 490 N</span>
Since block is being pulled up by a 13-degree slope
Therefore, Force which is acting parallel to the slop:
<span> F p =490 Sin </span>= 110.2N
Force which is acting perpendicular to the slope:
<span> Fv =490 Cos</span> = 477.4 N
Net force can be given as follows:
<span>F n = (250 - 110.2 - 0.2*</span>477.4) N
<span>Fn=44.3N</span>
Now acceleration is given by the ratio of force to mass
<span>a = Fn/m</span>
<span>=44.3/50 = 0.89 ms^<span>-2</span></span>
Answer:
1. OK the
1. The horizontal axis of a osclloscope is generally TIME axis.
2. given T =25 micro second
That is = 25E-6 s
Then We f = (1/T) .
So f = 1/(25 x 10^-6) = 40000 Hz =
40 KHz.
3. First Band will be Yellow
Second Band will be Violet
Third Band will be Red
And
Fourth Band will be Gold
Thus, the value of the resistance = (47 x 100)plus or minus 5%
= (4700 plus or minua5%) ohm
the range of the acceptable value of the resistance will now be
= 4465 ohm to 4935 ohm
(4)
The level provided by the wall outlet = 120 x √2 = 169.68 V
The √2 is because the multimeter measures RMS voltage rather than peak voltage and
RMS Voltage is = √2 x peak voltage
A recurring illness. Typically lasts for a very long time and are very hard to remove.
<span>Before answering the questions I will list the three main laws of motion. The first law of motion states that an object at rest tends to stay at rest, and an object in motion tends to stay in motion in a straight line at a constant speed unless another force acts upon it. The second law of motion states that how fast an object picks up speed or slows down depends on the amount of force used and on its mass. The third law of motion states that for every action there is an equal and opposite reaction.
#1) When a propagule falls into the water, it displaces some water, which causes a small splash.
Answer: For this case it would be C) The Third Law of Motion.
#2) A heavier propagule will fall faster and hit the water with more force, causing a bigger splash.
Answer: For this case it would be B) The Second Law of Motion.
#3) The drifting propagule tends to stay in motion. It will only get stuck in the mud and start to take root when it is really time to germinate.
Answer: For this case it would be C) The Third Law of Motion.
#4) When a propagule is ready to fall off of the parent tree, it must overcome the inertia that keeps it in place.
Answer: For this case it would be A) The First Law of Motion.
#5) Occasionally, another branch or leaf will rub against a seedling due to wind or water action, and cause it to fall prematurely.
Answer: For this case it would be C) The Third Law of Motion.
#6) A seedling falling into the water does so with more force than a leaf, since it has more mass.
Answer: For this case it would be B) The Second Law of Motion.
#7) As a seedling's roots begin to grow into the mud, they displace the soil particles, which are moved aside to make room for the new tree.
Answer: For this case it would be D) Friction.
#8) Manatees are large marine mammals that live in the mangroves. To scratch their itchy backs, they like to rub against the roots of the mangroves.
Answer: For this case it would be D) Friction.
I hope it helps, Regards. <span>
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